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Quantitative Hardened Ashless Filter Circles

Quantitative Hardened Ashless Filter Circles

Whatman® Quantitative Hardened Ashless Filter Circles are the supreme quantitative filter papers featuring high wet strength and chemical resistance. These papers are acid hardened, which reduces ash to an extremely low level. Their tough surfaces make them suitable for a wide range of critical analytical filtration operations. Each grade offers a convenient combination of filtration speed and particle retention. 0.006% ash maximum.

Quantitative Hardened Ashless Filter Circles

Qorpak is your Source for Lab Supplies, Glassware and Packaging

For over 30 years, Qorpak has provided packaging solutions and laboratory essentials to a variety of industries including pharmaceutical, educational, chemical, environmental, oil and gas, automotive, medical, and may more markets.

We are perhaps best known for our extensive collection of glass and plastic bottles & jars and our green thermoset closures - but we don't stop there. We carry jugs, metal containers, a complete line of lab glassware, gloves, scales & balances, pipets, paper containers - the list goes on and on!  Can't find what you are looking for on our website?  Give us a call at 800.922.7558 on one of our packaging specialists will assist you in finding the right item for your needs.

Looking for more from your packaging?  Qorpak does more than provide packaging and lab supplies - we also provide specialty services! Specialized kit assembly, pre-cleaned containers and parts, bottle capping, specialized case pack configurations and labeling - we pride ourselves on our ability to thrill our customers with value added services.
Qorpak is dedicated to being dependable, innovative, responsive, and customer centric to fill our customer's needs. Providing first class service to customers is our specialty - how can we thrill you today?