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Quantitative Medium Flow Filter Paper Grade: BIO-40

Grade: BIO-40
Particle Retention: 8.0μm
Product Appearance: Smooth
Filtration Speed: Medium
Ash Content(%): < 0.007
Thickness(mm): 210
Basis Weight(g/m2): 92
Wet Burst(psi): 0.5


Description of Medium Flow Filter Paper Grade 40

Quantitative filter paper is made of high-quality commercial cotton pulp using advanced production and post-processing techniques; it has very little residual ash after burning and has almost no influence on the analysis results and is suitable for precise quantitative analysis.

Hawach BIO-40 Quantitative filter paper is a star product equivalent to Whatman’s filter paper Grade 40. Because Hawach integrates R&D and sales, our vacuum filter paper has more competitive. Filter paper filtration is more effective against chemical reactions, so it produces fewer impurities and can be used for quantitative analysis.

Quantitative medium flow filter paper Grade 40 has slow particle retention (8μm), but chemical filter paper bio-43 is higher particle retention of 3um. Quantitative filter paper filtration is used in several test methods. Commonly used filters in many standardized test methods, such as sample preparations and gravimetric analysis.

Features of Quantitative Filter Paper Filtration

1. BIO-40 is equivalent to Whatman filter paper Grade 40
2. High-purity filters contain 0.007% maximum ash content
3. High retention rate
4. Medium flow filter paper
5. Filter paper filtration

Advantages of Competitive Vacuum Filter Paper

1. ISO9001 & CE third-party certification
2. High purity and consistent performance
3. Lowest ashless content: < 0.007%
4. Full range of diameter and OEM size and types are available
5. Whatman Grade 40 equivalent quality but competitive vacuum filter paper
6. Easy to use: pre-cut filter paper for use directly

Applications of Quantitative Filter Paper Grade 40

Regular filtration
Pressure filtration
Vacuum filtration
Particle size detection in dyes
Specific gravity analysis of cement, clay, iron, and steel products
Separation of solids from aqueous extracts during routine analysis
Analysis of the specific gravity of milk sediment
Collect trace amounts of elements and radionuclides from the atmosphere
Clarification filtration of the solution before atomic spectroscopy
Specific gravity analysis, filtration of the solution before a determination by atomic absorption spectrophotometry, and sampling in air pollution monitoring

Grade Comparison

Hawach Scientific Co., LtdWhatmanAdvantecMunktellAhlstromMacherey Nagel
BIO-40Grade 40NO.5B39074640d

Guide for Filter Paper


Technical Data

Ash Content
Basis Weight
Wet Burst
(mm H2O)
BIO-408μmSmoothMedium<0.007104> 180

Ordering Information

Item #Description
BIO-40-055Quantitative Filter Papers, Grade 40, Medium, 8μm, 55mm, 100pcs/pk
BIO-40-070Quantitative Filter Papers, Grade 40, Medium, 8μm, 70mm, 100pcs/pk
BIO-40-090Quantitative Filter Papers, Grade 40, Medium, 8μm, 90mm, 100pcs/pk
BIO-40-110Quantitative Filter Papers, Grade 40, Medium, 8μm, 110mm, 100pcs/pk
BIO-40-125Quantitative Filter Papers, Grade 40, Medium, 8μm, 125mm, 100pcs/pk
BIO-40-150Quantitative Filter Papers, Grade 40, Medium, 8μm, 150mm, 100pcs/pk
BIO-40-180Quantitative Filter Papers, Grade 40, Medium, 8μm, 180mm, 100pcs/pk
BIO-40-185Quantitative Filter Papers, Grade 40, Medium, 8μm, 185mm, 100pcs/pk
BIO-40-240Quantitative Filter Papers, Grade 40, Medium, 8μm, 240mm, 100pcs/pk
BIO-40-270Quantitative Filter Papers, Grade 40, Medium, 8μm, 270mm, 100pcs/pk
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