Understanding Cannabis Distillate and Pope Scientific’s Wiped Film Distillation Equipment

Understanding Cannabis Distillate and Pope Scientific’s Wiped Film Distillation Equipment

What is Cannabis Distillate? Cannabis distillate is a highly refined form of cannabis extract, known for its purity and potency. It typically contains 80-95% cannabinoids, making it ideal for various products like edibles, vape cartridges, and topicals. This distillation process removes impurities and unwanted compounds, resulting in a clean and versatile product.

Steps Involved Before Distillation

  1. Extraction: Cannabinoids are extracted from the cannabis plant using solvents such as ethanol or CO2.
  2. Winterization: The crude extract is mixed with ethanol and chilled to remove fats, waxes, and lipids.
  3. Decarboxylation: The extract is heated to convert inactive cannabinoids (like THCA and CBDA) into their active forms (THC and CBD).

Wiped-Film Distillation Technology Pope Scientific’s wiped-film distillation equipment is renowned for its efficiency and precision in producing high-quality cannabis distillate. Here’s how it works:

  • Thin Film Formation: The cannabis extract is continuously fed onto a heated surface where it forms a thin film. This thin film allows for rapid and uniform heating, ensuring that cannabinoids are efficiently separated from other compounds.
  • Wiping Mechanism: A mechanical wiper or roller spreads the extract into a thin film and moves it along the heated surface. This enhances the evaporation rate and ensures even exposure to the heating element.
  • Vacuum Application: The distillation process occurs under vacuum, which lowers the boiling points of the cannabinoids. This allows for the separation at lower temperatures, preserving the integrity and potency of the cannabinoids.
  • Condensation: As the cannabinoids evaporate, they are immediately condensed on a cooled surface and collected as purified distillate.
  • Multiple Passes: For achieving the highest purity, the distillate can undergo multiple passes through the wiped-film apparatus, further refining the product with each pass.

Advantages of Pope Scientific’s Wiped-Film Distillation Equipment

  • High Efficiency: Maximizes cannabinoid yield and purity with minimal thermal degradation.
  • Precision Control: Advanced temperature and vacuum controls optimize the distillation process.
  • Scalability: Suitable for various production scales, from small labs to large industrial facilities.
  • Robust Design: Durable construction ensures long-term reliability and performance.

Pope Scientific’s wiped-film distillation technology is trusted by industry professionals to deliver consistent, high-quality cannabis distillate. This equipment’s precision and efficiency make it an indispensable tool for producing top-tier cannabis products.

For more information, contact Pope. 

Optimize Lab-Scale Purification with Pope Scientific’s Benchtop Nutsche Filter Dryers

Optimize Lab-Scale Purification with Pope Scientific’s Benchtop Nutsche Filter Dryers

Pope Scientific leads the way in laboratory separation equipment with its proven Benchtop Nutsche Filter Dryers. These compact units have been a staple in laboratories for years, offering researchers a powerful tool for testing, piloting, and small-scale processing.  Pharma, fine chemicals, cannabinoids, electronics, and specialty materials are just a few of the many applications.

Transition From Lab Büchner Funnels to Industrial Operations

Pope’s fully enclosed sanitary design provides numerous advantages over the traditional, open Buchner funnel apparatus. Materials are contained and isolated from the user for maintenance of purity and safety. Featuring ASME-certified pressurizability, filtering, and cake washing is faster than via vacuum. Drying of the solids is also performed in the nutsche, e

fficiently accomplished under vacuum and jacket heating, plus a raising/lowering cake agitator to break up lumps and churn the solids.  This is the same operation as industrial nutsches, but smaller!

In-Stock and Ready for Action!

Pope’s Benchtop Nutsche Filter Dryers are stocked in 1, 3, 4, and 5-liter sizes.  All come pre-tested and pre-fitted with essential components including valves, sight glasses, pressure relief, spray assembly, pressure/vacuum gauge, and a manual with a full documentation package.

Custom Nutsches Too!

In addition to stocked units, Pope specializes in custom-designed lab, pilot, and production nutsches in a wide range of sizes, features, and functionality, and are optimized to meet clients’ processing needs and preferences.  We have your solution – contact us!

Pope: A Deep History of Providing Equipment and Support to the Cannabis Industry

Pope: A Deep History of Providing Equipment and Support to the Cannabis Industry

Founded in 1963, over the years Pope has supplied the cannabis industry with expertise and equipment. Today after celebrating over 60 years of business, we want to take a look at how far we’ve come:

  • 1963 – Pope Scientific Inc. is founded in Menomonee Falls, Wisconsin
  • 1975 – Pope Scientific introduces the Wiped-Film Still product line and technology to many industries worldwide.
  • 2002 – The 1st Pope WFS sale for a cannabinoid application, (CBD recovery from hemp seed oil byproduct in Canada)
  • 2007 – Pope builds Turnkey 400L Reaction System for synthesis of pharmaceutical THC, (first of a series of subsequent skid modules)
  • 2011 – The 2nd Pope WFS sale for a cannabinoid application to the University of Mississippi Dept. of Pharmacology, (THC purification from cannabis for research – at the time, the only authorized lab in the US)
  • 2015 – Start of the THC Distillate boom in the US
  • 2016 – Pope Sells over 100 Canna Wiped-film Stills
  • 2017 – Start of the CBD Distillate Boom in the US and elsewhere
  • 2018 – 1st Pope CBD Crystallizing Isolation System sold
  • 2018 – Pope begins Cannabinoid Toll Processing and Process Development Services, (for several types of cannabinoids except THC)
  • 2019 – Pope breaks ground for a 20,000 square foot building expansion (required both for cannabinoid industry and for general industry) larger scale distillation and process equipment
  • 2019 – Pope sells over 500 Canna Wiped-Film Stills (in US and several countries)
  • 2021 – Pope launches the ProPass 600 Canna Still
  • 2023 – Pope celebrates 60 years in business
  • 2023 –  Pope introduces the fully CE-certified Wiped-Film Still series at MjBizCon

Download the Timeline PDF

A Comprehensive Guide to Navigating Distillation Equipment And Services

A Comprehensive Guide to Navigating Distillation Equipment And Services

In the realm of chemical processing, the choice between utilizing distillation services or investing in distillation equipment can significantly impact a business’s efficiency, costs, and overall success. For companies seeking to optimize their operations in this domain, understanding the nuances between different services and equipment options is crucial. In this guide, we’ll delve into the intricacies of toll distillation services, explore the benefits of investing in distillation equipment, and highlight key applications for chemical processing distillation.

Exploring Toll Distillation Services:

Before committing to purchasing distillation equipment, businesses can benefit from leveraging toll distillation services offered by reputable providers like Pope Scientific Inc. These services offer a range of advantages:

  1. Minimized Risk: By outsourcing toll chemical processing services, businesses mitigate the risks associated with investing in equipment that may not fully meet their needs or production requirements.
  2. Accelerated Time to Market: Utilizing toll distillation services allows for quicker turnaround times, enabling businesses to bring their products to market faster and capitalize on emerging opportunities.
  3. Ideal for Smaller Runs: Tolling services cater to businesses with varying production volumes, making them an excellent choice for smaller-scale operations or pilot projects.
  4. Process Testing and Optimization: Tolling services provide a platform for testing and refining distillation processes without committing to equipment purchases upfront. This enables businesses to identify the most suitable equipment for their long-term needs.
  5. Scalability and Flexibility: Pilot runs conducted through tolling services are fully scalable to production processing equipment, facilitating seamless transitions from testing to commercial-scale operations.
  6. Cost-Efficiency: Opting for tolling services requires less upfront investment compared to purchasing equipment outright, making it a financially prudent choice for businesses exploring new processes or markets.
  7. Reduced Resource Requirements: By outsourcing toll chemical processing services, businesses can minimize the need for specialized expertise and internal resources, streamlining operations and reducing overhead costs.

12″ Pope Stainless Steel Wiped-Film Molecular Still with Degasser

Transitioning to Distillation Equipment Ownership:

While toll distillation services offer numerous benefits, some businesses may eventually opt to invest in their own distillation equipment. Here are some advantages and considerations of equipment ownership:

  1. Long-term Cost Savings: Investing in distillation equipment can yield significant cost savings over time compared to continually outsourcing processes to third-party providers.
  2. In-house Versatility: Owning distillation equipment grants businesses greater control and flexibility over their operations, allowing them to handle multiple processes in-house and adapt quickly to changing market demands.
  3. Increased Production Capacity: With dedicated equipment at their disposal, businesses can ramp up production volumes and meet growing demand without relying on external service providers.
  4. Control Over Project Timeline: When working with a toller, there are times when businesses must wait to get on the schedule, potentially causing difficulties in meeting project timelines due to lack of control over equipment availability. By owning distillation equipment, businesses have full control over their project timelines, reducing delays and ensuring timely delivery of products to market.
  5. Economic Viability for Commercial Production: For businesses requiring consistent, high-volume production, owning distillation equipment can be more economically viable in the long run than relying solely on tolling services.
  6. Process Control and Customization: Equipment ownership affords businesses greater control over how their products are processed, enabling them to tailor operations to meet specific quality standards and customer preferences.

Applications of Chemical Processing Distillation

Distillation plays a critical role in a wide range of industrial applications. Some notable examples include:

  • Edible Oil Deodorization and De-acidification
  • Vitamin and Nutritional Supplement Purification
  • Extract and Biomaterial Concentration
  • Food, Flavors, and Fragrance Isolation
  • Polymer Devolatilization
  • Wax and Silicones Fractionation
  • Decolorization
  • Moisture Removal
  • F.A.M.E. Fractionation (Also F.A.E.E.)
  • Polyglycerol Distillation
  • Omega-3 Fatty Acid Distillation

In conclusion, whether through leveraging toll distillation services or investing in distillation equipment, businesses in need of chemical processing solutions can navigate their options effectively by considering factors such as risk, scalability, cost, and process requirements. By understanding the nuances of each approach and aligning them with their specific needs and objectives, businesses can optimize their operations, drive efficiency, and achieve sustainable growth in the competitive landscape of chemical processing. Contact Pope Scientific for more information on our toll distillation equipment and services.

Determining Which Fractional Distillation Process to Use: Batch or Continuous Mode

Determining Which Fractional Distillation Process to Use: Batch or Continuous Mode


Distillation is an important method for the separation and purification of liquids in a wide range of industries and laboratories.  For optimal purification in distillation, a vertical column is incorporated into the equipment with either a series of internal stacked plates (trays) or else filled with one of various types of structured or dumped-in packing.  The purpose of the trays or packing is to provide a high degree of vapor-liquid contact which results in multiple equilibrium stages or “theoretical plates”, each one leading to increasing purification all the way up the column, with the purest and lowest boiling point (BP) vaporized component(s) escaping the top of the column to contact a condenser where it leaves the column as a liquid distillate.  The overall result is that specific components of the starting composition have been separated, or fractionated, giving this process the name, fractional distillation.  Fractional stills often operate under pressure or vacuum and have a reflux device section for controlling and optimizing purity vs. throughput rate, however, these and several other topics of distillation equipment are not covered here. In this article, we will take a look at the two different types of fractional distillation; batch mode and continuous mode.

Batch Distillation Mode

Continuous Fractional Distillation Systems

Batch mode is the normal starting point of any distillation process and is the “simpler” of the modes.  Here, a fixed amount of feed material, (a batch) is loaded into a boiling vessel (pot), onto which is mounted a column with a condenser at the top.  The pot is heated and after a certain amount of time, the liquid begins to boil, and portions of it vaporize and travel up the column.  (One well-known example of batch mode is the traditional making of “moonshine” where a fermented mixture is loaded into the pot, heated, and an ethanol-enriched distillate is collected). The first feed components to vaporize are ones with lower boiling points (BP) than the others.  These components move up the column, with the lowest BP component in the feed becoming increasingly purified by means of fractionation finally being condensed and leaving the rest of the mixture as described above, to be collected in a distillate receiver.  This will continue until the first component of lower BP is depleted in the boiling pot.

At this point, if the process is allowed to continue, the next component of BP greater than the first begins to make the travel all the way up to the condenser to be condensed, leaving as another distillate fraction that can be collected in a different receiver than the first.  Some feed materials may contain many components and this means of separating several of them, one after the other, in order of increasing BP, can be continued until the desired product components have been collected at which point, the distillation process is ended by shutting off the heating of the boiling pot.

Examples of batch stills are many and can include anything from isolation of a flavor component in an extracted natural botanical source to recovering certain solvents from a waste mixture for reuse.  A key characteristic of batch mode is that the composition of the feed material in the pot is constantly, incrementally changing throughout the duration of the run.  The composition in the pot at the moment will be different an hour from now or even just a few minutes from now.  The distillate collected will also change in composition over time as each subsequent component is distilled away.  Thus, this is not a steady-state process.

In situations where the quantity of starting feed material becomes quite large, for example well beyond 1000 liters, and feed lots must be processed frequently, for example, at least every day, batch mode will become quite limited in addressing production requirements.  Another method for fractional distillation is then needed and this is when continuous mode must be considered.

Continuous Distillation Mode  

Continuous mode fractional distillation can handle very large quantities of feed without the need for very large boiling vessels.  Instead, feed is pumped at a set flow rate into the distillation system which has a column and condenser which can be similar to a batch-type setup.  However,  in this case, a reboiler replaces the boiling vessel and this is outfitted with apparatus for continuous discharge of residue, often referred to as a “bottoms stream”.  The feed is preheated and enters the column at a height selected to optimize the overall process efficiency.  Distillate leaves the system from the condenser, similar to the case of batch mode.  So, in continuous mode, there is one stream entering the system and two streams exiting the system, the distillate, and the residue.

A key characteristic of continuous mode is that the compositions of these streams and at any point within the distillation equipment do not change over time as in batch mode, instead they remain constant, in a steady state throughout the entire run, the duration of which may go on for a considerable time.  Oil refineries are a well-known example; these typically operate 24/7, being stopped only for maintenance or other technical reasons.  There are exceptions to the 3-stream scheme described above; for example, in addition to the distillate collected at the top of the column, there may be multiple take-off points (side-streams) at various heights of the column.  In the case of oil refinery columns, these will be multiple component cuts including gasoline, diesel, and mixed solvents in the upper column region, and oil cuts of increasing weight and viscosity as the locations get closer to the bottom of the column.  It is important to note that these are never pure single-component cuts, but collections of many components of somewhat similar BP, for example, one stream may become further processed to become 10W-40 motor oil, and another stream may be used to create a variety of lighter lubricants, etc.  The heaviest components of all become the materials used in tars, asphalts, and the like.

Other continuous fractional applications may involve feed streams with several, but far fewer individual components than are found in crude petroleum oil.  Examples include many specialty chemicals such as pharmaceutical intermediates and electronics materials manufactured in reactors.  The target product(s) may be somewhere in the middle of the range of the BP’s of several byproducts that must be removed.  For high-purity products, side draws cannot be utilized, these will not be pure enough.  To isolate pure components, more than a single column is needed, the number being dependent on the number of components in the feed.  For example, the first column may be used to distill away several components which are lower in BP than the desired product.  The residue can then serve as feed to a second column which will distill away the product plus a byproduct of BP near that of the product.  This distillate stream may be fed to a third column which separates the product away from the byproduct that is co-distilled from the second column.  This type of separation of pure components is more easily done with a single batch still if heat sensitivity is not a problem, (waiting for the product to start coming off the column and collecting it separately), however, as mentioned earlier, this is not practical with very large feed quantities; instead, a battery of staged continuous mode columns is called for.

There are many considerations that go into the design of a fractional column distillation system. These factors can vary depending on the scale at which you are manufacturing. When working at a commodity scale it often makes sense to manufacture in a continuous fashion, however, on the pilot and small production scale an important consideration is whether to use a batch approach. In addition to scale, there are a few other factors that play a considerable role such as the quantity of material, purity, energy use, and how many components need to be separated.  These are highlighted in the figure below:

Energy Usage

Energy consumption in continuous distillation is lower than that of batch distillation.  Heat recovery can be utilized, and the process loops optimized for both product quality and energy consumption. Energy usage can also be optimized by both preheating the feed material and selecting the best column entry point for the feed stream, reducing the condenser and reboiler duties.  In batch mode, more energy is required in startup and because much of the heat is applied to evaporating the same material portions multiple times; this effect is reduced in continuous mode operation.


Pope Continuous Fractional Distillation System

Pope Batch Fractional Distillation System

Process Development and Scaleup; Lab, Pilot Plant, and Production Scale

As mentioned, in nearly all cases, batch mode is the starting point for fractional distillation.  Even if the long-range goals call for very large production quantities and continuous mode installation will eventually be needed, new product development typically starts with lab scale and this will be batch mode.  Lab scale equipment with boiling vessels of less than 1 liter up to 12 liters is appropriate for process feasibility studies. The lab-scale distillation experimentation may be part of an extensive general product development project.  For example, it may be found that upstream chemistry and reactions need to be changed to allow proper distillation and other downstream operations work well, followed by more experimentation, etc.  If lab studies are successful, it is normally advisable to move on to stainless steel (or other higher alloy if necessary) pilot scale equipment.  This may include batch stills from a few liters in size up to 100 liters or more.  It may also include pilot scale continuous stills with column diameters from 1” to 12” and feed rates from 1 to a few hundred liters/hr. Equipment of the larger end of these ranges can also serve as small or mid-size production systems as needed.  Examples of such equipment are shown.

Pope Scientific offers batch fractional stills in glass from 1 to 22 liters and in stainless steel from 2 to 2000 liters or larger.  Continuous fractional still systems are available in stainless steel with from 1” to 24” column diameters.  All of the above equipment is normally designed and manufactured in skid-mounted modular turnkey form. Instrumentation can range from control elements only to fully integrated PLC control systems.  Semi-turnkey systems and core distillation components alone are also available.  During pilot plant studies, it may be found that the distillation system may need to be reconfigured somewhat in order to optimize the process.  Pope takes this into account in the design of pilot plants, for example, allowing the ability to add or decrease column height or addition of collection receivers, etc.  Control systems for continuous systems are more complex as there are several control loops required to achieve a steady state.  However, the programs required for batch systems can be more extensive than for continuous, depending on what the user wants to accomplish. This is because there are usually several time and event-based changes in operating parameters during the run which may be automated, with routines set up by the operator before the run begins.

Pope maintains a staff highly knowledgeable in applications assistance, chemical engineering, chemistry, and chemical equipment operation, providing the customer with a partner for matching processing needs to equipment optimized for the lab, pilot, or production project. In addition to the provision of equipment, Pope can offer lab and pilot scale studies, depending on the nature of the specific applications.  Experienced personnel in mechanical and electrical engineering, assembly, quality assurance, and documentation assure the equipment will work well from delivery and startup and will last for decades.

The Benefits of Utilizing Data Acquisition Systems in Distillation Processing with Yokogawa

The Benefits of Utilizing Data Acquisition Systems in Distillation Processing with Yokogawa

Data acquisition systems (DAQ) have been around for a long time; however many people aren’t familiar with this technology when inquiring about distillation equipment. Programmable Logic Controllers (PLCs) are used often in chemical processing for controlling key variables such as pressure, flow rates and temperature. While most PLCs will have some sort of data logging capabilities, it is typical that the software associated with the PLC is very cumbersome. Often a programmer will have to spend a good deal of time to incorporate the basic trend information that would come standard on a DAQ system. In addition, data logging on a PLC is often just a CSV file that is dumped to a location after one run. The CSV file must then be further manipulated to show the data on a graph or chart. An actual data recorder can do a much better job with the visualization of data without hours of additional programming. A DAQ system allows the user to look back at any timeframe of data from 60 seconds to possibly several days prior. This data can also be set to be shown as trend information, bar graphs or just plain figures straight out of the recorder. A DAQ system can exist as hardware within a control panel in which it is viewed from a web browser or as external hardware with its own housing touchscreen control. Having such ease of access to these heavily customizable reports can prove to be very useful to an operator, which is why Pope likes to include both in our control systems.

Having hardware and software record data for you, as opposed to someone in the lab handwriting these bits of information, provides many benefits. Ease of access to data can be a strong point for the recorders. If a DAQ system is uploading this information to a hard drive or server, there are many ways this information can be shared and analyzed throughout a group or company from remote locations. This data can be used to ensure reliability or to improve process efficiency. Having access to this data also allows the user to make predictions in maintenance. For example, if a certain heating or cooling element starts to take more time to reach its target temperature, it could imply that that element is starting to fail. Knowing this ahead of time allows a company time to order replacements before a failure actually occurs. This avoids any sort of downtime.

Yokogawa GX20 – image source

Most DAQ systems will have similar capabilities as those mentioned above – so why do we specifically like Yokogawa’s DAQ? The two main reasons are its easy-to-use interface as well as its ability to comply with GMP environments. Yokogawa has done an excellent job incorporating universal gestures into its touchscreen technology. The same swipe and pinch motions people use every day on their cell phones are incorporated into their recorders. The display is very intuitive in addition to being very bright and colorful. There is no shortage of customization options when it comes to viewing your data. Bar, trend, and digital graphs can be set up to view whatever variables are desired. As noted, the DAQ can be connected via ethernet to view data in real-time from anywhere, or more traditionally exported on a scheduled basis. This data can also be exported in different files types to be observed in other means. In regards to its GMP capabilities, Yokogawa DAQ systems can be compliant with CFR 21 part 11. This specific compliance is the FDA’s regulations for electronic documentation and electronic signatures. Yokogawa’s advanced security add-on allows the users DAQ system to contain an encrypted data file to prevent any manipulation to the data recovered. It’s a one-way road that only allows data to be exported out in an XLS file type. This add-on also contains an onboard audit trail that tracks what changes are made, who made them and when they were made allows for full traceability.

For all of these reasons, Yokogawa DAQ systems are a great asset to distillation equipment. Next time you’re inquiring about a Pope distillation system, be sure to ask how Data Acquisition Systems can be used with your process. Our experts are available to answer any questions and provide recommendations.

Case Study: Specialty Silicones Manufacturer Optimizes Processing & Product Quality with Pope

Case Study: Specialty Silicones Manufacturer Optimizes Processing & Product Quality with Pope



AB Specialty Silicones is a US Manufacturer and Worldwide Distributor of specialty silicone chemicals. They are well known for their customer focus along with providing very high-quality products, service and technical expertise in silicone materials. AB’s core brand Andisil®, encompasses a broad product catalog serving many industries including personal care, dental & medical, specialty chemical manufacturing, electronic encapsulation, adhesives & sealants, coatings, mold making, gypsum, mineral & fiber treatment, pulp manufacturing, roof coatings and others. One of several factors in common with the highest quality polymers, including silicones, is having a very low amount of residual volatiles.


AB Speciality Silicones Plant in Waukegan, IL

In the early stages of product development, AB Specialty Silicones reached out to Pope Scientific to explore the best methods for producing low volatile silicone pre-polymers and  polymers. Specifically, AB needed to respond to the demand for volatile-free silicone polymers for encapsulation in the LED industry. This particular application brought unique challenges. Silicones can be heat sensitive, leading to degradation including color change, (prohibited for LED applications). Typical batch mode boiling vessel methods for removal of cyclics and monomers were causing such degradation due to the long residence heating time of many hours.


Pope Toll Processing & Pilot Facility, Saukville, WI

After Pope spent some time learning about the specifics of the application and its challenges, they collaborated with AB to develop the best method with strategies for optimizing the end product through lab trials and pilot plant process development. By utilizing short-path molecular distillation with Pope’s Wiped-Film Still technology, the potential for final product degradation and discoloration is greatly reduced or eliminated through efficient equipment and design process, high vacuum, and decreasing the heat exposure time to a matter of seconds.

Once the processing techniques were finalized, Pope began production toll processing campaigns of the material in their Saukville, WI facility. Bill Marman, Pope’s Toll Processing Supervisor was essential in aiding AB with process development and support throughout this initial project, as well as with future projects. “The original tolling run produced around 40 drums of the specialty low volatile silicone polymers,” says Mac Penman, AB Specialty Silicones’ General Manager.

Pope 9” Wiped-Film Polymer Devolatilization System

In 2009, with in-depth collaboration, engineering and processing experience, Pope built AB a 9” Wiped-Film Distillation system to run in-house at their Waukegan, IL facility. Pope helped AB commission the system and was there throughout the installation, performing final equipment testing, process startup and training. They were able to duplicate the processing in-house that they previously had to contract out. “There has always been an open dialogue with Pope. From pricing, to engineering and sales, we’ve gotten great support. We have a great relationship,” says Penman. The new equipment provided AB the ability to increase production of specialty chemicals, often times with complex distillation requirements, for their customers.

Processing has been further optimized through enhancements such as additional control instrumentation and degassing componentry. In 2019, AB added a new Pope 12” Wiped-Film Distillation system to their facility. “The new equipment triples our capacity for producing low volatility materials. Production of high solids, low residual materials are important to meet the growing needs for high purity silicones in specialty electronic applications,” AB Specialty Silicones noted. In 2023, AB expanded again with a 20″ 2-stage Pope Wiped-film molecular still.  All of the product lines AB manufactures – vinyl, hydride, phenyl, and fluoro-functional silicones can be processed in the new equipment. Overall, through their partnership with Pope Scientific – including process expertise, toll processing, and equipment, AB has achieved the competitive advantage in producing high value materials and increased production capabilities.



Download a PDF of the Case Study

Benchtop Nutsche Filter-Dryer Systems

Benchtop Nutsche Filter-Dryer Systems


Pope 3-liter Benchtop Nutsche Filter with optional motorized raising/lowering filter cake agitator.

Solids, crystals, high purity chemicals, pharmaceutical intermediates, etc., are efficiently filtered, washed, reslurried and dried in these portable nutsche filter-dryer systems, minimizing contamination and exposure. A logical leap forward from laboratory Buchner funnels. Design allows withdrawal of filter cake utilizing removable top head, bottom head and filter support assembly. May be pressurized to increase rate of solvent removal; drying is aided by vacuum and heating capability. Useful for experimentation and scale up studies; also for small scale production of high value products.

Standard models in 3, 4 or 5-liter sizes are stocked for quick delivery. Other lab sizes down to 0.2 liters and pilot/production sizes up to 1000 liters are offered. ASME and optional CE/PED certification for full vacuum to 100 psi, -80 to 250o C. Offered in stainless steel, Hastelloy, or alternate metals; optional food or pharmaceutical grade mechanical and electropolish finishes; Teflon or alternate coatings. Custom design features include manual or motorized raising/lowering cake agitators, mixers, temperature control options, jacketing, valving, special porting, sight glasses, instrumentation, pumps, etc., plus a wide range of easily replaceable filter media.