CHMLAB GROUP, S.L.

FILTRATION

Filtration is the mechanical-physical operation which is used for the separation of solids from fluids (liquids or gases) by interposing a porous media through which only the fluid can pass. Oversize solids in the fluid are retained on the surface as well as within the matrix of the filter media.Filtration has a wide range of applications: from laboratory analytical procedures to techniques in big production lines.

Guidance to use the correct filter

TYPE OF FILTERS

FILTER PAPER

Quantitative and qualitative analysis
General laboratory procedures (clarifying filtration)
Technical applications
Special applications

GLASS AND QUARZ MICROFIBER

Very small particles
Aggressive substances
Temperatures up to 1000 ºC
Water analysis
Biochemical determinations
Air monitoring
As membrane pre-filter

EXTRACTION THIMBLES (CELLULOSE,GLASS & QUARTZ MICROFIBER)

Extraction solid/liquid with Soxhlet
Powder and aerosol particles collection in gases

Filter papers retain the impurities or particles of the liquid fluids on the surface as well as within the matrix of the filters. The particles or impurities are settled into the filter, modifying its filtration properties. Within the filter fibers arranged in an anarchic way into the filter paper, it creates a secondary filtration layer. This is the reason why it is not possible to determine a nominal porosity for the filter papers. As guidance it is possible to find the retention ranges into our technical specifications tables. Often the filter papers are named as depth filters; they have a high capacity to retain particles and allow process big quantities of sample.