ADVANTEC Hard filter paper No.4A

Since the surface of the filter paper is hardened by chemical treatment, the paper quality is tough and the surface is smooth, and there is almost no fiber detachment.
Suitable for pressurization and vacuum filtration.
It is relatively resistant to acids and alkalis and traps fine precipitates.
It corresponds to 4 types specified in JIS P 3801 (filter paper (for chemical analysis)).
Precipitate collection on the surface of the filter paper.
Filtration of fine barium sulfate, colloidal aluminum hydroxide, etc.
*Not resistant to dimethyl sulfoxide. *When filtering using a Buchner funnel, holes may form in the filter paper depending on the hole diameter of the funnel and the filtration pressure. In such cases, please place the filter paper on a support such as a mesh sheet. *Due to the characteristics of the product derived from the manufacturing process and raw materials, there is a possibility that the results of trace analysis may be affected. For this reason, please measure a blank value when performing trace analysis of filtrate or captured matter. *If the delivery address is a private residence (single-family home or apartment building), the house name is required. Please note that delivery may not be possible without a house name.