Filter Paper – Grade 1, 70 mm Diameter (Pack of 100)

Grade 1 laboratory filter paper designed for routine filtration with medium retention and reliable flow rate.

This standard filter paper is widely used in school and teaching laboratories for clarifying liquids and performing qualitative analytical separations. Its consistent performance makes it suitable for everyday chemistry experiments involving common precipitates such as lead sulfate, calcium oxalate, and calcium carbonate, supporting accurate and repeatable student practical work.

Key Features

• Grade 1 filter paper for general-purpose laboratory filtration
• Medium particle retention with balanced filtration speed
• Ideal for qualitative analysis and routine chemistry applications
• Consistent and reliable performance in teaching laboratories
• Circular sheets sized for small filter funnels

Specifications

• Grade: 1 (standard)
• Particle retention (liquid): 9 µm
• Initial filtration speed: 155 s / 100 mL
• Thickness: 0.20 mm
• Basis weight: 87 g/m²
• Dry bursting strength: 89 kPa
• Diameter: 70 mm
• Shape: Circular
• Pack size: 100 sheets