Hawach Scientific Co., Ltd BIO-41 is a star product equivalent to Whatman’s Grade 41 with a more competitive price, which has a low retention rate and fast flow rate (20-25μm). Quantitative analysis of ashless filter paper in the manufacturing process, the pulp is treated with hydrochloric acid and hydrofluoric acid and washed with distilled water to remove most of the impurities in the paper fiber, so there is little residual ash after burning, which has little effect on the analysis results. It is important to filter paper for laboratory use.
BIO-41 filter paper is the filtration of large particles or gel deposits. Ashless filter paper is also used for rapid flow rate determination of gaseous compounds in quantitative air pollution analysis. The difference from grade 40 medium flow filter paper, quantitative filter paper grade 41 has a fast filtration speed.
Features of Quantitative Filter Paper Grade 41
1. Filter paper for laboratory use 2. Particularly useful for gravimetric analysis use 3. Fast filtration speed and the nominal particle retention rating of 20-25μm 4. Ash-free (ash content < 0.007%) 5. Basic weight is 104 (g/m2) 6. Wet burst >108 (mm H2O)
Advantages of Ashless Filter Paper BIO-41
1. ISO9001 & CE double approved 2. High purity and consistent performance 3. Full range of diameter, customized size, and shape are available. 4. Made of 100 % cotton linters, 5 different quantitative ashless filter paper grades for nearly every need
Applications of Ashless Filter Paper BIO-41
Precise quantitative analysis Ashless filter paper with the fast flow rate Determination of gas compounds Quantitative determination of milk sediment Filter coarse particles and gel precipitates During the analysis of aluminum hydroxide or iron hydride Preparation of samples for instrumental analysis Environmental analysis of air pollution, waste, and water Filtration of large particles or gel deposits Specific gravity analysis of air pollution when impregnated with slag for rapid Recommended for analytical processes such as aluminum hydroxide or iron hydride Rapid flow rate determination of gaseous compounds in quantitative air pollution analysis.