Going beyond being mere purification products a laboratory filter paper comes in different variants for different purposes. Each type of laboratory filter paper offers varying capacities, different filtration levels, and is also made for specific samples in particular applications. Application of this microfiltration product in the right industrial and research needs can be highly beneficial to the overall chromatographic process.
Quantitative filters are designed specifically for quantitative analysis of samples. This type of filter paper is also used to prepare samples for instrumental analysis and also for gravimetric analysis. They are available in ashless, hardened low ash and hardened ashless formats. Each format of quantitative filter paper is designed for specific quantitative analysis with specific samples and reactants.
The effective area is large, that is, the filter paper use area is large, can accommodate the dust volume is large, its resistance is small, its service life is long, relative to the cost is also increased accordingly. Previous Next. What is filter paper? Why is filter paper used in chromatography? What is the purpose of filter paper in TLC? Difference between filter paper and normal paper Different from ordinary filter paper , most paper is made of cotton fibers and is made in different ways for different purposes.
Why use filter paper? How to select filter paper correctly? When selecting filter paper, the main considerations should be: 1. Go to Top. The thickness of the filter paper is about 0. Filter paper filtration not only has the function of a screen but also has the function of deep filtration; the side magnification shows that the filter paper is a multi-layer structure.
The front of the filter paper should face the direction of airflow, the screen surface should be in the direction of the gas flow.
Color lines are drawn on the screen surface to facilitate user identification and prevent mistakes; if the front and back directions are wrong, the filter element is in use, and dust is stored. Generally, the filter paper types are qualitative filter paper and quantitative filter paper. The qualitative filter paper is often used in qualitative analysis. The reason is that the qualitative filter paper produces more cotton fibers if it is filtered.
Qualitative Filter Papers — these are used in qualitative techniques to identify materials. They do not offer the same level of precipitate recovery as quantitative filter papers. Camlab offer a wide range of filters to suit all applications — if you are unsure of what type is best for your application just contact us to discuss it further and we will be happy to advise.
Our clinic is evaluating underarm sweating by the collection of sweat over a 5 minute period with the placement of filter paper in the axilla with arm down. The sample is then weighed on a analytical balance. What is the best filter paper for this application?
Please get in touch support camlab. Hi there, The filters we have discussed here are small paper filters for removing particulates from liquid samples.
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