A silicone impregnated, water repellent paper which can be used to separate aqueous solutions from immiscible solvents. The aqueous phase is retained and the organic phase passes through. Will retain solid particles. Can be used either flat under suction not exceeding 70mm Hg or quadrant folded in a conical glass funnel. Supplied in boxes of 100 circles.
Note: This paper contains a small quantity of a tin complex catalyst. It is therefore not recommended for use when this complex may cause interference, e.g. with the use of dithizone (diphenylthiocarbazone) reagent.
FB380-26 FB380-28 FB380-30 FB380-32
FB380-34 FB380-36 FB380-40
Dia., cm 7
9 11
12.5 15
18.5 27
Box qty. 100
100 100 100
100 100 100
Filter Aids
Cellulose materials used to coagulate precipitates and as a prefilter layer in funnels.
Quantitative grade is used for Filter Aids except for ordinary clippings. Ashless. Box qty. 100g
FB405-30 FB405-40
Seed Test Papers
For use in most commonly applied seed germination methods. Supplied in boxes of 100 circles.
FB420-10 No. 181, 9cm diameter
Lens Tissues, Whatman 105 For lens cleaning.
CL760-10 CL760-15 CL760-20
Dimensions, mm 100 x 150
200 x 300 460 x 570
Pack qty. 625
100 500
Special Glass Microfibre Products for air pollution sampling – see FB800 and FB820 series.