Quantitative Filter Papers Used in Gravimetric Analysis

Which filter paper is used in gravimetric analysis? Quantitative filter papers are your ideal choice. Hawach quantitative filter papers ash content is less than 0.007%, and its impurity dissolution rate is very low. The ashless filter paper is made from pure alpha cotton cellulose and double acid washed then rinsed with ultra-pure water to neutralize and good for gravimetric analysis and preparation of samples for instrumental analysis.

Quantitative filter papers are manufactured under intense quality control standards to be of the highest quality and consistency, ensuring uniform performance so that you can be confident with your results which are as accurate as can be. Gravimetric analysis filter paper is suitable for a wide range of critical gravimetric analytical filtration procedures. Hawach filter paper used in gravimetric analysis is particularly suited for quantitative routine analysis.

Quantitative weight has a full flow rate. There are many options for the fast flow filter paper, medium flow filter paper, and slow flow filter paper.

What is the number of filter paper used for filteration in gravimetric analysis?

There are 5 grades of ash-free qualitative filter paper, namely:

1. Medium Flow Filter Paper Grade BIO-40: General purpose ashless filter paper. The main uses include gravimetric analysis, solution filtration before atomic absorption spectrophotometry, and monitoring of pollutants in the air.
2. Ashless Filter Paper Grade BIO-41: The strongest ashless filter paper, used for the analysis of large particles or colloidal precipitates, such as the analysis of iron or aluminum hydroxide.
3. Laboratory Filter Paper Grade BIO-42: The most effective qualitative grade filter paper used to collect small particles or fine sediments, such as collecting sulfuric acid barium.
4. Roll Filter Paper Suppliers Grade BIO-43: Used for food material analysis and soil analysis.
5. Cellulose Filter Paper Grade BIO-44: The efficiency of collecting small particles is slightly lower than Grade 42, but the flow rate is higher.

Technical Data of Quantitative Filter Paper

GradeParticle RetentionProduct AppearanceFiltration SpeedAsh Content (%)Basis Weight (g/m2)Wet Burst (mm H2O)
BIO-408.0μmSmoothMedium<0.00784>140
BIO-4120-25μmSmoothFast<0.00784>120
BIO-422.5μmSmoothSlow<0.00784>180
BIO-4316μmSmoothMedium to Fast<0.00784>140
BIO-443μmSmoothSlow<0.00784>180
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