Ashless Filter Papers 90mm dia. Pack of 100

Ashless Filter Papers from Johnson Test Papers are particularly useful for quantitative routine analysis and manufactured from refined pulp. They are acid-washed and have an extremely low ash content of <0.01%.

They are grade 352 which is the same as No. 40. They have medium properties, Thickness: 0.27

mm, Pore Size: 8 - 12?M, Weight: 80g/m2