Slow Medium Fast 7cm 9cm 11cm 12.5cm 15cm 18cm Qualitative Filter Paper For Laboratory Test

Introduction：

Qualitative analysis filter residue ash more commonly, is only for general qualitative analysis and used to filter the precipitation or suspended solids in the solution used, cannot be used for quality analysis and qualitative analysis filter paper chromatography is mainly used as supporter in paper chromatography, for the qualitative separation chromatographic qualitative analysis of the object under test no. 1 and no. 3, two kinds of filter paper, each is divided into fast and slow three at a moderate speed

Feature:

1. Qualitative analysis pretreatment;

2. Filtration of precipitates, such as ferric hydroxide, lead sulphate, calcium carbonate;

3.Seed testing and soil analysisV

Specification：

Detail photos：

Qualitative analysis filter paper

Qualitative analysis filter residue ash more commonly, is only for general qualitative analysis and used to filter the precipitation or suspension used in the solution, not since for quality analysis.Qualitative analysis types and specifications of the filter paper and quantitative filter paper basic same, said fast, medium and slow, but the fast, medium and slow on the printed sample. But on the box of filter paper instead of using quantitative and qualitative analysis of precipitation filters should be paid attention to.

Method of use

（1）generally USES natural filtering, using filter paper and the ability to intercept solid particles, liquid and solid separation;

（2）due to mechanical strength and toughness of filter paper use less as far as possible the suction filter to filter, such as the need to accelerate the filtering speed, to prevent wear filter and filter and failure, when the pump filter, according to the size of draught in the funnel stacked 2-3 layers of filter paper, when using vacuum suction filter, the leakage, to cushion a layer of dense filter cloth, put filters above; 

（3）it is best not to filter filter paper hot concentrated sulfuric acid or nitric acid solution

FAQ:

Q1.: What is your goods packing way?
A: 100pcs/box, 10box in one carton.

Q2: Do you test all your goods before delivery?

A: Yes, we have 100% test before sending.
Q3: What is your payment term?
A: Generally payment term is 30%T/T deposit in advance, 70% balance before shipment.

Q4: What kind of payments way do you support?

A: L/C, T/T, Paypal, Western Union and ALIBABA Trade Assurance are accepted.

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