英國whatman沃特曼Filtration aids助濾劑詳細介紹：
Filtration aids 助濾劑
The range of Whatman filtration aids are available in three forms and pack sizes.
ASLESS POWDER - Cellulose powder with an ash content of 0.015% and suitable for use as a filter bed
ASHLESS FLOC - Bulky mass of dry dispersed cellulose fibres which assist coagulation by forming a more flocculent suspension.  Ash content is 0.015% by weight.
ASHLESS CLIPPINGS - These are offcuts for maceration to make a pure filter pulp, which settles under suction in a funnel to form a thick, highly retentive filter bed.

Ordering Information - Ashless Filter Aids
Catalog Number	Description
1700-025	Ashless Powder, 250g, 1/pk
1703-050	Ashless Clippings, 500g, 1/pk
1704-010	Ashless Floc, 100g, 1/pk