Whatman^® Quantitative Filter papers, Ashless, Grade 40, Diam. 70 mm, Whatman (CAT#: STEM-L-4518-LC)

The Whatman^® Quantitative Filter Paper, Ashless, Grade 40 manufactured by Whatman is ideal for gravimetric analysis, separation of solid matter from aqueous extracts, quantitative determination of sediments in milk, pure analytical grade clean-up filtration of solutions before AA spectrometry and collection of trace elements and radionuclides from the atmosphere. The ash is extremely low to 0.007%.

Material: Contton filters, circles
Packaging: Pack of 100
Parameter: 340 sec/100 mL speed (Herzberg), 0.29 psi wet burst
Diam.: 70 mm
Thickness: 210 μm
Ash: ≤0.007%
Pore size: 8 μm (Particle retention)
Basis weight: 95 g/m²

Medium filtration speed

Whatman^® Quantitative Filter papers, Ashless, Grade 40, Diam. 12.7 mm, pack of 400, Whatman (CAT#: STEM-L-4519-LC)