Fast / Medium /Slow - Filtering 12.5cm qualitative filter paper for laboratory

Product introduce

Qualitative analysis of filter paper generally residual ash more, only for general qualitative analysis and used for filtration precipitation or suspension in solution, can not be used for quality analysis.
Qualitative analysis of filter paper type and specification and quantitative analysis of filter paper is basically the same, fast, medium and slow, but printed on fast, medium and slow words said. However, in the case of filter paper is not the use of quantitative and qualitative analysis of filter paper filter should pay attention to precipitation:
1.Natural filtration, using filter paper and the ability to retain solid particles, so that the separation of liquid and solid;
2.due to the poor mechanical strength and toughness of filter paper, use less as far as possible the filtration way to filter, if it is necessary to accelerate the speed of filtering, to prevent wear filter filtration caused by failure, in the air pump filter, according to the pumping force in the funnel stack put 2 ~ 3 layers of filter paper, in vacuum, in leakage. First pad a layer of dense cloth on top filter paper;
3.Filter paper is best not to filter the hot concentrated sulfuric acid or nitric acid solution.

Qualitative filter paper of various specifications：

Diameter: 9cm 11cm 12.5cm 15cm 18cm 7cm, special specifications can be customized.

step1：

First, take a piece of filter paper were folded;

Step2：

With 1/4 fold again;

Step3：

The folded filter paper to open the good side of three layer side of a layer;

Step4：

After the open to the triangle shape into the funnel;

Company introduction：

Aoke Biological Engineering （Yangzhou）Co.,Ltd, established in 2,011, is a professional manufacturer engaged in the research, development, production, sale and service of PH test papers,PH special test papers, Qualitative filter papers,Quantitative filter papers,Chemical analysis test papers.Until now,our products have been widely used in scientific search,industry,agriculture,medicine and health,universities and environmental testing. We are located in Yangzhou City,Jiangsu Province with convenient transportation access. Dedicated to strict quality control and thoughtful customer service, our experienced staff members are always available to discuss your requirements and ensure full customer satisfaction. In recent years, our company has introduced a series of advanced equipment including Paper cutter, Binding machine, Punch machine and Rolling cutting machine. Anyway,we aim to establish and generalize our own brand.We all hope that we can bring our products to the world one day. Now,selling well in all cities and provinces around China, our products are also exported to clients in such countries and regions as France,USA,UK,HK,Switzerland. We also welcome OEM and ODM orders. Whether selecting a current product from our catalog or seeking engineering assistance for your application, you can talk to our customer service center about your sourcing requirements.We will try to meet your needs.We truly welcome customers from all parts of the world seek cooperation for mutual benefits.If necessary, please contact us in time ,Thanks.