In-line filters

Whatman In-Line Filters feature a high purity polypropylene housing to maintain sample purity and are available with a choice of filtration media to suit a range of aqueous and organic samples. They utilize the most advanced construction methods and design features. This level of engineering provides for the finest disposable in-line filter devices.

> In-Line filter degasser

The Aqueous IFD has a 0.2 µm hydrophilic nylon membrane for use with aqueous-based mobile phases. Solvent IFD has a 0.2 µm high flow polypropylene membrane for mobile phases containing organic solvents. Both devices have a polypropylene housing, the circumference of which is sealed by a security ring, fittings to accommodate 1/16"-1/8" tubing and an air vent on the inlet with luer lock cap to enable priming.

The in-line filters work on the principle of "bubble point" - the point of pressure at which gasses will pass through a wet membrane. If pressure is maintained below the bubble point, the gas will not pass through the membrane and is trapped by the particular filter device.

Features and Benefits
 

• Faster than traditional methods of mobile phase preparation-saving time in the laboratory
• Enhanced laboratory safety
• No need to purchase expensive degassing equipment
• Rugged, chemically resistant polypropylene construction
• Air vent on inlet with luer lock cap
• Integrity testable (Bubble Point method)

Applications

• HPLC analysis
• Pharmaceutical research
• Analytical chemistry

¹ Typical values determined with (a) water and (b) isopropanol.
² For effective gas bubble removal in HPLC.

* O-rings included: 1/32" - 5/32" ; accepts different diameter tubing 0.8mm-4mm.
** Non o-ring style—accepts 1/8" tubing only.

Polydisc™ filters
Whatman Polydisc 50 mm in-line disc filters are designed for larger volume sample filtration in the laboratory, at a pilot plant or in manufacturing. They are extremely versatile and cost effective. Sample volumes up to 1 liter can be filtered with one device. Polydisc devices can be used in conjunction with a syringe or connected in-line (6-10 mm ID hose) via stepped hose barbs.

Polydisc filters feature a high purity polypropylene housing to maintain sample purity and are available with a choice of filtration media to suit a range of aqueous and organic samples. The devices are autoclavable and sterile options are available.

> Polydisc AS

Polydisc AS

The Polydisc AS (Aqueous Solution) family of 50 mm filter devices feature a high throughput polyethersulfone membrane, which has low protein binding and no surfactants, developed for use in the pharmaceutical industry. A glass microfiber prefilter extends the life of the membrane and effectively filters heavily contaminated samples. Each Polydisc AS device has a sterility cap on the outlet and is sealed in its own "medical grade" clear blister pack, radiation sterilized and secured in a protective shelf pack.

Features and Benefits
 

• Radiation sterilized. No EtO residuals
• Barbed hose connections fit multiple tubing sizes
• Integrity testable (bubble point method)
• Lightweight (11.5 grams); avoids the collapsing of tubing which can be caused by heavy filter devices

Applications

• Tissue culture media
• Reagent preparation
• Particle counting solutions
• Pharmaceutical preparations

*Liquid rating. Retention efficiency in gas streams is significantly higher.

Polydisc TF

This device features a PTFE membrane which is ideal for chemically aggressive solutions, reagents and organic solvents. This lightweight unit is particularly suitable for protective vents and for in-line filtration and isolation applications. The 1 µm device features a polypropylene prefilter for use with heavily contaminated samples.

Features and Benefits
 

• Solvent resistant membrane
• Chemical resistant housing
• Hydrophobic PTFE membrane
• Autoclavable (multiple)
• Integrity testable (bubble point or water breakthrough pressure "in situ" methods)
• Biosafe
• Lightweight (11.5 grams); avoids the collapsing of tubing which can be caused by heavy filter devices

Applications

• Pharmaceutical: vents and in-line applications
• Biotech: sterile vents and exhausts for growth environments, in-line sterilization
• Laboratory: clean or sterile gases, solvents, reagents, drying gases
• Electronics: photoresists, solvents, gases for research

*Typical values

Polydisc HD

Excellent flow rate characteristics and ideal for filtering large volumes to 1 liter of aqueous and solvent samples. Polydisc HD is available in 5 and 10 µm retention ratings.

Features and Benefits
 

• All polypropylene unit for aqueous and solvent samples
• Broad solvent compatibility

Applications

• Large volume sample preparation

Polydisc SPF

Contains a unique stack of filter media ideal for prefiltration of serum and other hard-to-filter solutions. Contains a glass microfiber and polysulfone membrane filter stack that effectively filters the complex particulates found in serum samples.

Applications

• Virology, microbiology and tissue culture laboratories
• Immunoassay methods and diagnostic standards/controls

*Liquid rating. Retention efficiency in gas streams is significantly higher.

Polydisc GW

Polydisc GW is specifically designed for filtration in trace analysis. It is an aqueous in-line filter with low background values for the determination of COD, TOC, DOC.