Product Category Description:

These syringeless filters provide a faster, easier way to remove particulates from samples being prepared for high performance liquid chromatography (HPLC) analysis. Ideal for routine analysis, composite assays, content uniformity, protein precipitation, solubility and dissolution testing, and sample filtration. Filters feature a polypropylene housing and cap. Choose from a variety of filter media to meet your application needs: low nonspecific protein binding PVDF membranes for aqueous solutions; nylon membranes when filtering samples containing aqueous or organic solvents with a pH range of 3–10; PTFE membranes for chemically agressive samples; PES membranes for biological samples requiring low protein binding media; polypropylene membranes for general filtration media and solvent-based samples; glass microfiber (GMF) membranes for particulate-laden liquids; and depth polypropylene (dp polypropylene) membranes for aqueous or organic solvents with high flow and loading capacity.

Filters with slit septa are ideal for high throughput automation and instruments with sensitive sampling needs. These filters eliminate coring problems associated with repeated sampling and minimize sample evaporation. The septa is made of PTFE membrane and silicone rubber.

The amber filters prevent photo degradation of light-sensitive samples. The amber chamber and plunger are translucent to allow visual inspection.

Compressor 14227-832 presses the plunger through the liquid with ease. It is ideal for viscous or particulate-laden samples.

Specifications for Whatman Mini-UniPrep Syringeless Filters, Whatman US503NPUORG Filters With Slit Septa Cap :

Membrane:		PTFE
PoreSize, µm:		0.45
Whatman No.:		US503NPUORG
Unit:		Pack of 1000
Filtering Capacity:		0.5 mL
Maximum Operating Temperature:		50°C (120°F)

(Please note that the description and stock photo may not correspond to the specific model listed above)

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In addition to the Whatman Mini-UniPrep Syringeless Filters, Whatman Filters With Slit Septa Cap US503NPUORG/ 83009-830, we carry a full complement of Filters as well as other product offerings from Whatman. We also carry a full line of Whatman accessories to help meet your laboratory and scientific needs.

For a complete selection of Whatman Filters, please visit our Whatman page. For more brand name Filters please visit our Filters store section. To see our complete line of lab, medical, industrial, and scientific products, please see our science and lab equipment online catalog.