Hawach BIO-4 qualitative lab filter paper is standard grade filter paper for routine applications. BIO-4 filter paper material is alpha-cellulose and cotton linter. BIO-4 20 micron filter paper is ideal for substitute the Whatman grade 4 and with a more competitive price, which has a low retention rate and fast flow rate(20μm). General filtration for laboratory use, pore size is about 20 microns, fast flow rate, ash content less than 0.1%, gram weight 84g, wet bursting degree greater than 120mm water column. The difference from filter paper 1 micron, the filtration speed of 20 micron filter paper is fast.
Hawach Scientific Co., Ltd is a China qualitative and quantitative micron filter manufacturer and supplier, who produces full range size filter paper to meet your chemical and biology experiment.
Features of 20 micron filter paper BIO-4
1. BIO-4 is equivalent to Whatman Grade 4 2. Micron filter manufacturer 3. 20 micron qualitative filter paper 4. Filter papers have a broad pH tolerance and are thermostable up to 120°C 5. Diameter of BIO-4 is the same as qualitative filtration filter paper grade 2, which are 55, 70, 90, 110, 125, 150, 180, 185, 240, 270, 300mm
Advantages of lab filter paper
1. Lowest ashless content: < 0.1% 2. High purity and consistent performance 3. Manufactured from alpha-cellulose and high-quality cotton linters 4. Micron filter manufacturer passed ISO9001 & CE double approved 5. According to figure: round and square, accept OEM service
Applications of lab filter paper
1. Citric acid and sodium in drugs 2. Monitoring air pollution with reagent immersion 3. Determination of oil and grease in the volatile acid in flour, malt sugar 4. It is best not to filter hot concentrated sulfuric acid or nitric acid solution 5. Natural filtration is generally used, and the separation of the test liquid and the solid is performed by using the filter paper body and the ability to trap solid particles
Grade comparison by micron filter manufacturer provided