GMF 150 prefilters are multilayer graded density filters for rapid and efficient filtration of samples with high solids content. They are designed with a course top layer (10 µm) and meshed with a finer layer of 1 or 2 µm. Manufactured from 100% borosilicate glass microfibre, the filter is binder free. It is an excellent prefilter for higher particulate loading capacity with faster flow rates.

• Nearly doubles the volume of sample filtered compared to a single density prefilter
• Compared to an unprotected membrane, three to seven times greater sample volume can be filtered
• Higher particulate loading capacity and faster flow rates than uniform prefilters
• Excellent particle retention (both large and small particles)
• Extends life of final filter membrane

Použijeme-li vzorek, vícestupňový skleněný filtr zachytí větší částice v jeho pórech nebo na povrchu hrubé vrstvy, střední částice v rozhraní mřížky a malé částice v rozhraní jemné vrstvy.