Introduction of Quantitative Filter Paper
Hawach Scientific is the production of filter paper professional manufacturers with advanced production technology and perfect testing equipment. Quantitative filter paper is suitable for a wide range of critical gravimetric analytical filtration procedures.
In the manufacturing process of quantitative filter paper, the pulp is treated by hydrochloric acid and hydrofluoric acid, and washed by distilled water to remove most impurities in the paper fiber, so the residual ash after burning is very little, which has little impact on the analysis results, and is suitable for precise quantitative analysis. The amount of ash produced after ashing does not exceed 0.007%.
Knowledge of Quantitative Filter Paper
Quantitative filter paper is often used to precise quantitative analysis because the residual ash content after burning is very little and the impact for analysis result is small. Generally speaking, our quantitative filter paper includes 5 grades, that is, BIO-40, BIO-41, BIO-42, BIO-43, and BIO-44. And intense strict quality control standards guarantees high quality and excellent performance.
Products classify of quantitative filter paper
The quantitative analysis filter paper produced at present is divided into three categories: fast, medium and slow.
There are two kinds of filter paper shapes: round and square.
There are several kinds of circular stationary paper in diameter: D70mm, D90mm, D110mm, D125mm, D150mm, and D180mm. The square quantitative filter paper has 600mm×600mm.
Pore size : 2.5um/3um/8um/16um/25um .
Different Performance of Quantitative Filter Paper
Quantitative Filter Paper Grade: BIO-40，BIO-41, Quantitative Laboratory Filter Paper Grade: BIO-42, Quantitative Roll Filter Paper Grade: BIO-43, and Quantitative Cellulose Filter Paper Grade: BIO-44 are all of the smooth appearance, high purity, low ashless and the full range of diameter. Currently, the quantitative filter paper is divided into three categories: fast, medium and slow. Thereinto, the sequence of filtration speed from fast to slow is BIO-41, BIO-43, BIO-40, BIO-42, BIO-44, particle retention from large to small is BIO-41, BIO-43, BIO-40, BIO-40 and BIO-42, ash content (%) are all < 0.008.
Application of quantitative filter paper
Quantitative filter paper is mainly used for weighing analysis experiments after filtration, namely gravimetric analysis tests in quantitative chemical analysis and corresponding analysis tests. The ash weight of each filter paper after ashing is a fixed value. Qualitative filter paper is used for general filtration, namely qualitative chemical analysis, and corresponding filtration separation.
Storage Condition of Quantitative Filter Paper
The chemical property of this product is stable and the transportation conditions are not strict. The product only needs to be stored in a dry and well-ventilated place, and avoid glare, the strong acid, strong alkali contact.