superior quality Filter Paper Grade 41 Circle 125 mm 1441-055

Article No.: 28418019 (US Reference)

Material:

• High-quality cotton linters

Form:

• Circles

• Diameter: 125 mm

Packaging:

• Pack of 100

Technical Specifications:

• Wet Burst Pressure: 0.22 psi

• Filtration Speed (Herzberg): 54 sec/100 mL

• Thickness: 220 μm

• Ash Content: ≤0.007%

• Pore Size (Particle Retention): 20–25 μm

• Basis Weight: 85 g/m²

More Filters

General Keywords:

• Filter paper

• Laboratory filter paper

• Qualitative filter paper

• Quantitative filter paper

• Ashless filter paper

• Whatman filter paper

• Grade 41 filter paper

• 125 mm filter paper

• Circular filter paper

• High-quality filter paper

• Lab filtration paper

• Filter paper circles

• Fine particle retention filter

• Fast flow filter paper

• Analytical filter paper

Product-Specific Keywords:

• Whatman 1441-055

• Whatman Grade 41

• Filter paper 125mm

• Whatman filter circles

• Cotton linters filter paper

• Low ash filter paper

• Gravimetric analysis filter

• Herzberg filtration speed

• Particle retention 20–25 μm

• Filtration paper for lab use

• Scientific filter paper

• Precipitate filter paper

• Whatman ashless paper

Superior Quality Filter Paper Grade 41 – Circle, 125 mm (Whatman 1441-055)

When precision and clarity matter, laboratory professionals, researchers, and industrial experts turn to Whatman Filter Paper Grade 41 for fast filtration and superior particle retention. This high-grade filter paper is engineered for applications requiring rapid filtration of fine precipitates, without compromising accuracy or cleanliness. With a 125 mm diameter in a convenient circle format, this product—Whatman 1441-055—delivers reliable, high-performance results with every use.

Premium Material and Construction

Made from high-quality cotton linters, Whatman Grade 41 filter paper is free from additives and impurities. Its refined composition ensures excellent chemical resistance and compatibility with a wide range of solutions. Each filter circle is manufactured to exacting standards, offering a consistent and uniform structure that enables quick and efficient filtration.

The paper’s thickness and strength are precisely balanced to withstand challenging filtration processes, while its smooth texture allows for easy handling and placement within filtration systems or funnels.

Fast Filtration Speed

Grade 41 is renowned for its fast filtration properties. It is the fastest ashless filter paper in the Whatman line, making it ideal for analytical procedures involving heavily loaded solutions. It offers a filtration speed of approximately 54 seconds per 100 mL (Herzberg method), facilitating faster throughput in routine or large-volume laboratory work.

Despite its speed, Grade 41 maintains excellent retention of fine particles, thanks to a controlled pore size of 20–25 µm. This combination of speed and precision makes it particularly well-suited for quantitative analysis and gravimetric techniques.

Ashless Performance for Clean Results

With an ash content of ≤0.007%, Whatman Grade 41 filter paper is classified as ashless, making it highly suitable for gravimetric analysis where minimal residue is essential. When combusted, the paper leaves behind negligible ash, reducing the risk of contamination or interference in sensitive tests. This level of purity is especially valued in analytical chemistry, environmental testing, and trace metal analysis.

Dimensions and Practical Use

Each filter paper circle has a diameter of 125 mm, offering a generous surface area for efficient filtration in standard laboratory funnels. The circular shape ensures easy and secure placement during use, helping to maintain consistent filtration flow and prevent bypass. With a basis weight of 85 g/m² and a thickness of 220 µm, these papers are robust enough for repeated handling while maintaining flexibility and uniform filtration characteristics.

Whether you're filtering precipitates in a chemistry lab or preparing samples for environmental analysis, these filter circles provide a dependable solution tailored for high-performance laboratory work.

Applications

• Analytical Chemistry: Especially for gravimetric and quantitative analysis

• Environmental Monitoring: Soil, water, and air sample filtration

• Industrial Processes: Quality control and product testing

• Food and Beverage Testing: Purification and separation of solids

• Pharmaceutical and Biotech: Sample prep and testing procedures

Convenient Packaging

 Grade 41 filter circles (product code 1441-055) come in a pack of 100, securely packaged to maintain cleanliness and integrity during storage and transport. The packaging is clearly labeled with the product number and specifications for easy inventory management.

Why Choose filter Grade 41?

Backed by decades of trusted performance,  filter papers are a staple in laboratories worldwide. Grade 41 stands out for its unique combination of speed, strength, and purity, making it a top choice for professionals who require consistent results and high filtration efficiency.