Hawach Scientific Co., Ltd quantitative filter paper ash content is less than 0.007%, and its impurity dissolution rate is very low. Quantitative filter paper is suitable for a wide range of critical gravimetric analytical filtration procedures.
Hawach ashless filter papers are particularly suited for quantitative routine analysis. The ashless quantitative filter paper is made from pure alpha cotton cellulose and double acid washed then rinsed with ultra-pure water to neutralize and good for gravimetrc analysis and preparation of samples for instrumental analysis. These filter papers are manufactured under intense quality control standards to be of the highest quality and consistency, ensuring uniform performance so that you can be confident with your results which are as accurate as can be.