Grade: BIO-4
Particle Retention: 20μm
Product Appearance: Smooth
Filtration Speed: Fast
Ash Content(%): <0.06
Thickness(mm): 205
Basis Weight(g/m²): 96
Wet Burst(psi): 0.7
Qualitative Filter Paper Grade: BIO-4
Description
Description
Hawach Scientific Co., Ltd BIO-4 filter paper is a star product equivalent to Whatman’s Grade 4 with 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.
Features
BIO-4 is equivalent to Whatman Grade 4
55, 70, 90, 110, 125, 150, 180, 185, 240, 270, 300mm diameter or OEM size in available
The filter papers have a broad pH tolerance and are thermostable up to 120°C
Advantages
ISO9001 & CE Double approved
According to figure: round and square, accept OEM service
Manufactured from alpha-cellulose and high-quality cotton linters
High purity and consistent performance
Lowest ashless content: < 0.1%
Applications
Monitoring air pollution with reagent immersion
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;
It is best not to filter hot concentrated sulfuric acid or nitric acid solution
Determination of oil and grease in the volatile acid in flour, malt sugar,
Citric acid and sodium in drugs
Grade Comparison
| Hawach Scientific Co., Ltd | Whatman | Advantec | Munktell | Ahlstrom | Macherey Nagel | Sartorius |
|---|---|---|---|---|---|---|
| BIO-4 | Grade 4 | 1 | 1288/3 | 631 | 1670 | 604 |
Guide for Filter Paper
Technical Data
| Grade | Particle Retention |
Product Appearance |
Filtration Speed |
Ash Content (%) |
Basis Weight (g/m2) |
Wet Burst (mm H2O) |
|---|---|---|---|---|---|---|
| BIO-4 | 20μm | Smooth | Fast | <0.1 | 84 | > 120 |
Ordering Information
| Item # | Description |
|---|---|
| BIO-4-055 | Qualitative Filter Papers, Grade 4, Fast, 20-25μm, 55mm, 100pcs/pk |
| BIO-4-070 | Qualitative Filter Papers, Grade 4, Fast, 20-25μm, 70mm, 100pcs/pk |
| BIO-4-090 | Qualitative Filter Papers, Grade 4, Fast, 20-25μm, 90mm, 100pcs/pk |
| BIO-4-110 | Qualitative Filter Papers, Grade 4, Fast, 20-25μm, 110mm, 100pcs/pk |
| BIO-4-125 | Qualitative Filter Papers, Grade 4, Fast, 20-25μm, 125mm, 100pcs/pk |
| BIO-4-150 | Qualitative Filter Papers, Grade 4, Fast, 20-25μm, 150mm, 100pcs/pk |
| BIO-4-180 | Qualitative Filter Papers, Grade 4, Fast, 20-25μm, 180mm, 100pcs/pk |
| BIO-4-185 | Qualitative Filter Papers, Grade 4, Fast, 20-25μm, 185mm, 100pcs/pk |
| BIO-4-240 | Qualitative Filter Papers, Grade 4, Fast, 20-25μm, 240mm, 100pcs/pk |
| BIO-4-270 | Qualitative Filter Papers, Grade 4, Fast, 20-25μm, 270mm, 100pcs/pk |
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