TLG® Ashless Quantitative Filter Papers No.40 are highly pure making them suitable for analyses sensitive to very low levels of background contamination. These filters are useful for gravimetric analysis, soil analysis for the separation of solid ...

TLG® Ashless Quantitative Filter Papers No.41 have very fast filtration speed and are typically used in air pollution analysis, soil pollution analysis, metals analysis after nitric acid digestion, gravimetric analysis, and preparation of samples ...

TLG® Ashless Quantitative Filter Papers No.42 have the finest particle retention, making them suitable for analysis of very small particles. These filter papers are useful in processes requiring ashing and the preparation of gravimetric precipitat...