Filter paper Grade 1 qualitative 125mm diameter Whatman

Filter paper circles, Whatman®, Grade No.1, 12.5cm diameter, box of 100. 1001-125

Chemistry and Laboratories
Coffee and Tea Brewing
Air and Water Filtration
Biology and Microbiology

Grade 1 Qualitative Filter Paper Standard Grade, circle, 125 mm
Grade Type Standard
Basis Weight 88 g/m2
Ash Content 0.0006
Grade Grade 1
Typical Thickness 180 µm
Alpha Cellulose Content Min. 0.98
Material Cellulose
Air Flow Rate 10.5 s/100 ml/in2
Tensile M/D Dry 39.1 N/15 mm
Trace Elements Aluminum:<0.5 µg/g
Antimony: <0.02 µg/g
Arsenic: <0.02 µg/g
Barium: <1 µg/g
Boron: 1 µg/g
Bromine: 1 µg/g
Calcium: 185 µg/g
Chlorine: 130 µg/g
Chromium: 0.3 µg/g
Copper: 1.2 µg/g
Fluorine: 0.1 µg/g
Iron: 5 µg/g
Lead: 0.3 µg/g
Magnesium: 7 µg/g
Manganese: 0.06 µg/g
Mercury: <0.005 µg/g
Nitrogen: 23 µg/g
Potassium: 3 µg/g
Silicon: 20 µg/g
Sodium: 160 µg/g
Sulfur: 15 µg/g
Zinc: 2.4 µg/g
Particle Retention in Liquid Max. 11 µm1)
Properties Medium flow
Filtration Speed (Herzberg) Approx. 150 s
Diameter 90 mm
1)Particle retention rating at 98% efficiency.

HS Code / Commodity Code: 4823200000