Filter paper circles, No. 42 (MN 640 d), 185mm (Pack of 100 filters)

• Equivalent to Whatman Filter Paper No. 42

• Ashless, slow filter paper with very fine particle retention

• Standard paper for critical gravimetric analysis of fine precipitates like barium sulfate or metastannic acid

• Surface: Smooth

• Basis weight: 85 g/m2

• Thickness: 0.17 mm

• Filtration speed: 140 s

• Material: Cellulose

• Ash content: Less than 0.01 %

• Color: White

• Retention capacity: 2 to 4 micron

• Wetstrength: Light