Big square filter paper, 1000 sheets

Product item:FJ048
Product price:US $ 200 / carton
Available sizes: 60x60, 65x65, 70x70, 80x80, 90x90, 100x100cm

BASIC INFO

Big square Filter paper, 1000 sheets (for industry and laboratory)

Unit price(60x60cm): US $ 200 / carton

Delivery fee is not included

Filter paper is a semi-permeable paper barrier placed perpendicular to a liquid or air flow. It is used to separate fine substances from liquids or air.Filter paper are widely used in laboratory experiments across many different fields, from biology to chemistry. The type of filter used will differ according to the purpose of the procedure and the chemicals involved. Generally, filter papers are used with laboratory techniques such as gravity or vacuum filtration.

Two major types of filter paper

1, Qualitative filter paper

Qualitative filter paper is used in qualitative analytical techniques to determine materials. There are different kinds of qualitative filter paper according to different pore size.

Product name	Model		Max. aperture(μm)	Filtration velocity(s)	Ash content(%)	Ration(g/m2)
Qualitative filter paper	101	Fast	20-25	35	≤0.15	80±4
	102	Medium	15-20	35-70	≤0.15	80±4
	103	Slow	10-15	70-140	≤0.15	80±4

2, Quantitative Filter Paper

Quantitative filter paper, also called ash-free filter paper, is used for quantitative and gravimetric analysis. During the manufacturing, producer use acid to make the paper ash-less and achieve high purity.

Product name	Model		Max. aperture(μm)	Filtration velocity(s)	Ash content(%)	Ration(g/m2)
Qualitative filter paper	201	Fast	20-25	35	≤0.01	80±4
	202	Medium	15-20	35-70	≤0.01	80±4
	203	Slow	10-15	70-140	≤0.01	80±4