Filtration Systems

NYLON Filter Membranes Nylon membranes are extremely durable membranes that allow for more viscous fluids, oils, and even solvents to be filtered through the membrane. Hydrophilic and excellent at removing particulates and bacteria. Superior thermal capabilities, and has a much higher tolerance to solvents than a PES filter. Extremely high vacuum capacity. This membrane is the best combination of durability and speed, especially when filtering higher viscosity fluids. Ideally suited for multiple laboratory filtering needs. PVDF Filter Membranes PVDF membranes are hydrophilic for wide chemical compatibilities, including a resistance to higher temperatures (up to 150°Celsius). Approved for filtering multiple food products, this membrane provides low extractable levels. This membrane may require the usage of mechanical pumps, but is able of sustaining far higher degrees of acidity, and can filter viscous fluids. This membrane is as durable as Nylon and also tolerates very high vacuum rates. However, PVDF has a slower flow rate than Nylon, especially when filtering more viscous fluids. PES Filter Membranes It’s asymmetrical pore structure allows for very high flow rates, in addition the polyethersulfone membranes have the benefit of having low protein binding characteristics. Hydrophilic, and able to withstand higher temperatures, PES filters have a wide range of laboratory uses. However, does not withstand high pressures for filtration when filtering more viscous fluids. May not filter especially viscous fluids at all. Solvents mixed with other liquids or oils may work, but acidity of the mixture must be very minimal or it will damage the pore structure of the membrane. Ideally suited for rapid filtration of aqueous or less viscous fluids with low solvent concentrations.

Cornwall® Syringe Dispenser The Cornwall® Syringe fluid dispensing system is effectively used when repetitive fluid filling is necessary, it effectively aids in the use of syringe filters. It is a manual, sterile device that has a two-way valve that attaches to both the syringe and the solution to be drawn into the syringe. Each time the grip is released, the syringe fills with solution. Each time the grip is compressed, the syringe volume is expelled. The Cornwall Syringe System is a sterile, disposable system that includes spring-loaded syringe, valve system, spike and tubing set for repetitive fluid dispensing. 10cc capacity. Price: $19.49 Each

Whatman® 25 mm GD/X Syringe Filters, .22, .45 sizes. Contain a unique prefiltration stack of Whatman multigrade GMF 150 (10:1 um) and Grade GF/F (0.7 um) prefilters. Final filter has a 0.45 um filter pore and PVDF (PolyVinyliDene Fluoride) membrane. Whatman® 25 mm GD/X syringe filters are non-sterile. Whatman Syringe Filters work well with the Cornwall fluid dispensing syringe.:22. and .45 sizes. 1 Unit Price .22um: $3.75 EachOut of Stock. 1 Unit Price .45um: $3.75 EachOut of Stock.

Millipore Sterile PVDF 33mm Syringe Filters Suitable for filtering water based solutions. Are you accustomed to 25 mm Whatman PVDF syringe filters? These Millipore 33 mm filters have the same filter element and 20% more filter surface area than a 25 mm filter. These are the highest quality syringe filters on the market and that is why we carry them exclusively. "Radiation sterilized; certified noncytotoxic; nonpyrogenic." .22µm pore size:Out of Stock .45µm pore size: Price: $4.00 per filter Bulk Price: 50 filters for $135.00 ($2.70 per filter) 250 filters for $625.00 ($2.50 per filter)	Whatman Zap-Cap Bottle Top Filter with Nylon Membrane Although Nalgene makes a complete filter unit that features a Nylon membrane, Whatman ZapCaps are the only bottle top filter units on the market that feature a Nylon membrane. The most unique feature about the filter units is that the connection will seal on any standard bottle (from 33mm - 45 mm). Membrane diameter is 76 mm and filter area is 39.2 cm2. Can be used up to 50°C. Includes a borosilicate pre-filter.(Not pre-sterilized) Out of Stock.
Millipore Steritop Bottle Top Filters with Durapore PVDF Membranes Millipore is one of the most respected names in filtration. These are the only bottle top filter units on the market that utilize a PVDF Membrane filter. Pore size is 0.22 µm. Fits media bottles with a 45mm neck size. "Radiation sterilized; certified noncytotoxic; nonpyrogenic." Millipore Steritop Bottle Top Filters 500ml with Durapore PVDF Membranes(COUNT 1) $14.50 Millipore Steritop Bottle Top Filters 500ml with Durapore PVDF Membranes (COUNT 12) $149.50	Nalgene© MF75™ Sterile Bottle-Top Filters Redesigned PES filters feature Pall Supor machV® membranes! Nalgene has partnered with Pall Life Sciences by adding Supor machV® PES (polyethersulfone) membranes for unsurpassed flowrate and performance. Just screw the bottle-top filter onto a sterile vacuum-rated media bottlewith a 33 or 45 mm neck size, or a pre-sterilized disposable receiver flask for direct vacuum filtration of your liquid samples. Available in both 33mm and 45mm neck sizes to fit both narrow (33mm) and wide mouth (45mm) media bottles with standard threads. Radiation sterilized; certified noncytotoxic; nonpyrogenic. Nalgene MF75 Bottle Top Filters with .2µm pore size 150 ml with 50mm diameter filter (33 mm neck) $7.50 150 ml with 50mm diameter filter (33 mm neck) x 12 = $68.00 150 ml with 50mm diameter filter (45 mm neck) $7.50 150 ml with 50mm diameter filter (45 mm neck) x 12 = $68.00 500 ml with 70mm diameter filter (33 mm neck) $13.50 500 ml with 70mm diameter filter (33 mm neck) x 12 = $93.00 500 ml with 70mm diameter filter (45 mm neck)$13.50 500 ml with 70mm diameter filter (45 mm neck) x 12 = $93.00 1000 ml with 90mm diameter filter (33 mm neck) $17.00 1000 ml with 90mm diameter filter (33 mm neck) x 12 = $150.00 1000 ml with 90mm diameter filter (45 mm neck) $17.00 1000 ml with 90mm diameter filter (45 mm neck) x 12 = $150.00
	Nalgene® 298 Large volume Fast Cap Bottle Top Filter FastCap™ Bottle Top Filter's universal fit eliminates the need to screw them onto glass media bottles. Just place on bottle mouth, apply vacuum and start filtering. Fits bottle necks up to 53 mm. Filter up to 5L of media. Polystyrene housing is blue, 90-mm PES membrane with .2µm pore size.        *Each: $25.00       *Case of 10:  $195.00
Nalgene Complete Filter Units with Nylon Membranes Nonpyrogenic. Pore Size: 0.2µm. Includes Polystyrene cover; graduated upper chamber and receiver; integral Nylon membrane filter; cellulosic-plugged side arm; quick-disconnect tubing adapter; color-coded collar. Cases of 500mL and 1000mL units include 12 glass fiber prefilters. 150 ml with 50mm diameter filter = $12.50 150 ml with 50mm diameter filter x 12 = $129.50 250 ml with 50mm diameter filter = $15.50 250 ml with 50mm diameter filter x 12 = $159.50 500 ml with 75mm diameter filter = $22.50 500 ml with 75mm diameter filter x 12 = $229.50 1000 ml with 90mm diameter filter = $25.50 1000 ml with 90mm diameter filter x 12 = $259.50	Millipore Stericup Complete Filter Units with Durapore PVDF Membranes Millipore is one of the most respected names in filtration. These are the only disposable filter units on the market that utilize a PVDF Membrane filter. Pore size is 0.22 µm. "Radiation sterilized; certified noncytotoxic; nonpyrogenic." 150 ml with 53mm diameter filter = $10.50 150 ml with 53mm diameter filter x 12 = $109.50 250 ml with 53mm diameter filter = $13.50 250 ml with 53mm diameter filter x 12 = $139.50 500 ml with 73mm diameter filter = $19.50 500 ml with 73mm diameter filter x 12 = $199.50 1000 ml with 93mm diameter filter= $23.50 1000 ml with 93mm diameter filter x 12 = $239.50
Nalgene® MF75™ Complete Sterile Filter Units Redesigned PES filters feature Pall Supor machV® membranes! These Filter Units feature the same filter tops as Nalgene’s MF75 Bottle Top Filters. However, they are conveniently packaged with a Nalgene MF75 Disposable Sterile Receiver Flask as a complete unit. These Filter units have tapered sides and "grips" to make units easier to handle and a wider base improves stability. Also, a 250 ml size is available, which is not presently made in the MF75 Bottle Top only filters. Lastly, the 500 ml unit features a wider 90 mm filter diameter, compared with the 70mm filter available on the MF75 Bottle Top only filters Nalgene MF75 Complete Sterile Filter Units with .2µm pore size 150 ml with 50mm diameter filter $10.50 150 ml with 50mm diameter filter x 12 = $71.25 250 ml with 50mm diameter filter $13.50 250 ml with 50mm diameter filter x 12 = $92.00 500 ml with 90mm diameter filter $19.50 500 ml with 90mm diameter filter x 12 = $159.00 1000 ml with 90mm diameter filter $23.50 - 1000 ml with 90mm diameter filter x 12 = $210.00	Ahlstrom Glass Fiber Pre-Filters These Prefilters are designed to be used with either the Nalgene, Millipore, or Corning Filtration Units. The prefilter disc are placed in the funnel on top of the membrane. Using a prefilter can increase the volume of solution you are able to filter by up to 100%. Glass fiber, grade 141. *55mm (for filters with 50 – 55mm diameter membranes) Out of Stock. *70mm (for filters with 70mm diameter membranes) Out of Stock. *90mm (for filters with 90mm diameter membranes) Each: $1.25 Package of 100: $95.00
Whatman Polycap 36 AS .22 um Filter with Filling Bell Filter utilizes a durable Nylon membrane. Capable of rapidly filtering over 5 liters of media at a time.  For use with our High Volume Peristaltic Pump..   Out of Stock.