Whatman Filters - Spam Filter For Exchange.
- A screen, plate, or layer of a substance that absorbs light or other radiation or selectively absorbs some of its components
- (filter) device that removes something from whatever passes through it
- A device for suppressing electrical or sound waves of frequencies not required
- A porous device for removing impurities or solid particles from a liquid or gas passed through it
- (filter) an electrical device that alters the frequency spectrum of signals passing through it
Whatman Puradisc 25 Syringe Filter Nylon 0.45µm (Pack of 50)
This Puradisc 25 syringe filter combines premium quality and economy. The filter is ideal for the quick, efficient filtration of samples up to 100 ml volume. It is produced from pigment-free polypropylene and has standard inlet (female luer lock) and outlet (male luer) connections (unless otherwise stated). Options include a sterile, medical-grade blister pack for critical applications and a special tube tip outlet that allows the sample to be accurately dispensed into a micro-vial, eliminating air lock. Membrane: Nylon. Retention: 0.45µm. 50/Pack. Whatman #: 6750-2504.
How old is this?
This filter paper looks like it's from the turn of the century. Well that's what spring cleaning's all about right?
This Whatman 5.5cm, grade 4, cellulose filter paper is used in qualitative analytical techniques to determine and identify materials. It is extremely fast filtering. It provides excellent retention of coarse particles (20-25µm) and gelatinous precipitates such as ferric hydroxide and aluminium hydroxide. It is very useful as a rapid filter for routine cleanup of biological fluids or organic extracts during analysis. This filter paper is used when high flow rates in air pollution monitoring are required and the collection of fine particles is not critical. Retention: 20-25µm. Dimensions: 5.5cm. 100/Pack. Whatman #: 1004-055.
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