Filter Paper Owing to its superior retention property, the provided Filter Paper is perfect for metastannic acid, strontium sulfate, mercuric chromate and other precipitates. In order to check its weight, air flow and mechanical strength, this paper is tested under different parameters. The offered paper is perfect to be used in food, chemical, pharmaceutical, mining and other industries to clarify sample and participate recovery before material identification In addition, this Filter Paper is designed using supreme grade cotton liners.