All About Filter Papers


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Throughout the different stages of chromatography, laboratory filter paper plays a huge role in separation and purification processes. These filtration products are highly useful in solvent filtering, cellulose analysis as well as a number of industrial applications, and are a must-have for any lab or industrial process that involves separation and purification.

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 Filter Papers

Quantitative Filter Papers

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.

Ashless papers are useful for critical procedures involving analytical filtering. Hardened low ash filter papers, on the other hand, work best in cases where greater chemical resistance is required and precipitates are to be retained with greater precision. Hardened ashless formats of quantitative filters have high wet strength and can be used for a wide range of critical filtration purposes.

Glass Microfiber Filters


Glass Microfiber Filters

These glass microfiber filters come in two forms – binder glass
microfiber and binder free glass microfiber. Both these types of filter paper are made out of 100% borosilicate glass and are perfect for filtration and retention of particles that are as tiny as sub-micron ranges. They can be used in extremely high temperatures of as high as 500 degrees centigrade and have very fast flow rates.

These filter papers are highly absorbent due to their fine capillary structure, and work well for liquid scintillation counting methods, spot tests and even microscopic examination as they can be made completely transparent. When used along with a pre-filter, these microfiber filters can handle greater volumes and the particle loading capacity can be greatly increased.


Cellulose Filters

Cellulose Filters

For general filtration purposes, cellulose filters are a great choice. This type of filter paper is made of high quality cotton liners that are treated so as to have an alpha cellulose content of 98% at the very least. They are ideal for a number of different laboratory application and choices are available of different retention and flow rates.

Cellulose filters come in varying degrees of hardness and purity. This makes them ideal for general filtration of a variety of samples. They also have varying chemical resistance, thereby making them suitable even for samples that might be acidic or aggressive in nature.

Filter Papers to Suit Every Need

Known throughout the world for our top quality filtration products, Tisch Scientific offers a range of filtration products that can be used in any industry or application. Take a look at our range of laboratory filter paper and you will be sure to find the right type for your industrial or research need. Our scientific and lab products are second to none.

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