Whatman^® Quantitative Filter papers, Ashless, Grade 589/1 Black Ribbon, Diam. 90 mm, Whatman (CAT#: STEM-L-4391-LC)

The Whatman^® Quantitative Filter papers manufactured by Whatman is ideal for gravimetric analysis and the sample preparation for instrumental analysis. The ash is extremely low to 0.01% while the flow rate is very high, making it ideal for various of critical analytical filtration procedures.

Material: Cellulose filters, circles
Packaging: Pack of 100
Parameter: 25 sec/100 mL speed (Herzberg)
Diam.: 90 mm
Thickness: 190 μm
Ash: ≤0.01%
Pore size: 12-25 μm (Particle retention)
Basis weight: 80 g/m²

Fast filter paper
Ashless

Whatman^® Quantitative Filter papers, Ashless, Grade 589/1 Black Ribbon, Diam. 150 mm, Whatman (CAT#: STEM-L-4392-LC)