Whatman Quantitative Ashless Filter Paper, Grade 40, 150mm (1440-150)

Whatman Grade 40 quantitative ashless filter paper is designed for critical gravimetric analysis and analytical procedures where ash content must be negligible. This premium cellulose filter paper delivers exceptional purity with an ash content of only 0.007%, making it ideal for quantitative applications in pharmaceutical, environmental, food and beverage, and chemical testing laboratories. The 8µm particle retention provides reliable filtration for fine precipitates and routine analytical separations.

• Grade: 40 Quantitative Ashless – ultra-low ash content (0.007%) for precise gravimetric analysis
• Diameter: 150mm – compatible with standard laboratory filtration funnels
• Particle Retention: 8µm – effective filtration for medium-fine crystalline precipitates
• Flow Rate: Medium – balances efficient filtration speed with reliable particle capture
• Quantity: 100 sheets per pack – economical supply for high-throughput laboratory operations
• Applications: Gravimetric determination, quantitative analysis, sample preparation, and quality control testing