Applications

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

General

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

Specification

• 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 µm
• Properties Medium flow
• Filtration Speed (Herzberg) Approx. 150 s
• Diameter 90 mm
• Particle retention rating at 98% efficiency.