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Question/Answer

what is acid washed filter paper

This filter is alpha cotton cellulose that has been washed twice with HCl and then once with HF. The filters are thoroughly rinsed with DI water to remove all traces of acid prior to packaging. The intended purpose is to collect fine precipitates from solution.

Good morning. :) Do you have any trial samples of these? Thank you.

We do not offer samples of this product.

Are these equivalent to whatman grade 541 filter paper

These filters are equivalent to Whatman grade 41 paper. The difference is that grade 541 is hardened ashless and grade 41 is just ashless.

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