Whatman 10300009 Quantitative Filter Papers

Whatman 10300009 Quantitative Filter Papers, Ashless, Grade 589/1, Diameter 90 mm

The Whatman 10300009 Quantitative Filter Papers are ashless filter papers designed for high-precision laboratory applications. With an ash content of less than 0.01%, these filters ensure accurate quantitative analysis and are widely used for the Blaine test in the cement industry and for ash content determination in foodstuffs. Their black ribbon design guarantees consistent performance in gravimetric analysis and sample preparation.

Product Features

1. High Purity and Ashless Composition

• Made from high-quality cotton linters with at least 98% alpha cellulose content.

• Contains less than 0.01% ash, making it suitable for precise quantitative work.

2. Optimized Filtration Performance

• Provides a Herzberg filtration time of 50 seconds for fast and efficient filtration.

• Retains coarse precipitates effectively while ensuring clear filtrates.

• Available in a prepleated version (Grade 589/1 ½) for added convenience.

3. Blaine Test and Gravimetric Analysis Compatibility

• Specially designed for cement Blaine fineness testing.

• Suitable for gravimetric ash content determination in food and agricultural products.

4. Durable and Consistent Quality

• Constructed with 190 µm thickness and 80 g/m² basis weight for mechanical strength.

• Retains structural integrity even when wet, ensuring ease of handling.

Applications

• Cement Industry: Used in Blaine permeability testing to determine cement fineness, ensuring consistent quality control.

• Food Industry: Applied in ash content analysis for foodstuffs, supporting compliance with safety and quality standards.

• General Laboratory Use: Effective for coarse precipitate retention and sample preparation in instrumental analysis.

Product Specifications

• Product Name: Whatman 10300009 Quantitative Filter Paper

• Grade: 589/1

• Diameter: 90 mm

• Type: Ashless

• Format: Circular

• Thickness: 190 µm

• Basis Weight: 80 g/m²

• Filtration Speed (Herzberg): 25 s

• Filtration Time (Herzberg): 50 s

• Ash Content: < 0.01%

• Material: High-quality cotton linters

• Alpha Cellulose Content: Minimum 98%

• Ribbon Color: Black

• Packaging: 100 pieces per pack

Conclusion

The Whatman 10300009 Quantitative Filter Papers (Grade 589/1, 90 mm) are the ideal choice for laboratories requiring ashless filters with high purity and consistent performance. Their fast filtration, durability, and reliability make them especially suitable for Blaine testing in cement, ash content determination in food, and general quantitative analysis.