Ashless Quantitative Lab Filter Paper Circles – 100 Pack
Ashless Quantitative Lab Filter Paper Circles – 100 Pack
Ashless Quantitative Filter Paper Circles – 100 Pieces
Achieve precise, reliable liquid filtration with these high-purity ashless quantitative filter paper circles. Designed for fast flow, these acid-washed lab-grade circles are ideal for professional laboratories, agricultural testing, air quality monitoring, food industry analysis, and classroom science education. With an ash content of less than 0.0009%, they deliver outstanding accuracy for quantitative analytical work.
Key Features
- Ultra-Low Ash Content: Acid-washed for extreme purity — ash content less than 0.0009%, ensuring accurate quantitative analysis.
- Fast Flow Rate: Efficiently filters liquids while retaining coarse particles (1–3 µm) and gelatinous precipitates.
- Wide Application Range: Suitable for agriculture, food industry, air pollution monitoring, laboratory research, and educational demonstrations.
- Multiple Size Options: Available in 5 diameters to fit standard laboratory funnels and filtration setups.
- Pack of 100: Generous quantity for extended use in research projects, classroom experiments, or routine testing.
- White, Round Circles: Uniform shape and colour for consistent, repeatable results every time.
Specifications
| Property | Details |
|---|---|
| Material | Paper |
| Colour | White |
| Ash Content | < 0.0009% |
| Particle Retention | 1–3 µm (coarse particles & gelatinous precipitates) |
| Flow Rate | Fast |
| Size 1 – Diameter | Approx. 12.5 cm / 4.9 in |
| Size 2 – Diameter | Approx. 15 cm / 5.9 in |
| Size 3 – Diameter | Approx. 7 cm / 2.75 in |
| Size 4 – Diameter | Approx. 9 cm / 3.54 in |
| Size 5 – Diameter | Approx. 11 cm / 4.33 in |
| Quantity | 100 Pieces per Pack |
| Country of Origin | Made in China |
What's in the Box
- 100 × Ashless Quantitative Filter Paper Circles (your chosen size)
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Frequently Asked Questions
Q: What does "ashless" mean for quantitative filter paper?
A: Ashless quantitative filter paper is acid-washed to remove mineral impurities, resulting in an extremely low ash content (less than 0.0009%). This means when the filter paper is incinerated during gravimetric analysis, it leaves virtually no residue, ensuring highly accurate quantitative results in laboratory settings.
Q: Which size of filter paper circle should I choose?
A: The right size depends on your funnel or filtration equipment. Match the filter paper diameter to your funnel size — common pairings are 7 cm for small funnels, 9–11 cm for medium funnels, and 12.5–15 cm for larger laboratory funnels. Always check your equipment specifications before selecting a size.
Q: Are these filter papers suitable for use in agriculture and food testing?
A: Yes. These ashless quantitative filter paper circles are widely used in agricultural soil and water analysis, food industry liquid clarification, and air pollution monitoring — in addition to standard laboratory and classroom teaching applications.
Q: How many pieces are included in one pack?
A: Each pack contains 100 filter paper circles of your chosen size, providing ample supply for extended research, repeated experiments, or classroom use.
Production & Packaging Notice
To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.