Frequently Asked Questions about ADVANTEC Quantitative Filter Paper No.5B (φ47 mm, 100 pcs/box) ADVANTEC 01521047:

1. What is ADVANTEC No.5B quantitative filter paper?

ADVANTEC No.5B is an ashless quantitative filter paper conforming to JIS P 3801 Type 5B. It’s designed for precise gravimetric analysis, retaining medium-fine precipitates with high reproducibility and low ash content.

2. What raw materials and treatments are used?

The paper is manufactured from over 99% pure α-cellulose fibers. It undergoes double acid washing (hydrochloric acid and hydrogen fluoride) and is rinsed with ultrapure water to reduce ash content to approximately 0.01%.

3. Which standards does it meet?

It meets the Japanese Industrial Standard JIS P 3801 for Type 5B quantitative filter papers, ensuring consistency in retention characteristics, flow rate, and ashlessness.

4. What are the dimensions and packaging details?

Diameter: 47 mm

Quantity: 100 filters per box

Packaging: Resealable cardboard box to maintain cleanliness and prevent contamination.

5. What are the key physical specifications?

6. What is the typical flow characteristic?

After wetting, No.5B exhibits a medium flow rate of about 7 cm/min under a 10 cm water column pressure. This balance makes it suitable for fine gravimetric precipitates without excessive delays.

7. What are common applications?

Gravimetric analysis of medium to fine precipitates (e.g., CaCO₃, PbSO₄, BaSO₄)

Determination of ash or insoluble residue in environmental, food, and pharmaceutical samples

Sample preparation in mining and steel industries for metal content analysis.

8. How do you fold and place the paper in a funnel?

Fold the circular disk in half to form a semicircle.

Fold again to create a quarter-circle.

Open one quadrant to create three layers on one side and one on the other.

Insert into the funnel, ensuring the triple‐layered side rests against the funnel wall for support.

9. What is the correct procedure for quantitative filtration?

Pre‐wet the filter with distilled water to remove trapped air.

Dry a sample filter at 105 °C to constant weight for tare measurement.

Assemble the funnel and filter, pour the sample, and collect filtrate.

Dry the filter plus residue at 105 °C to constant weight.

Calculate the mass of the analyte from the weight gain.

10. How should I store and handle these filters?

Keep the box sealed in a cool, dry place away from direct sunlight.

Avoid contact with oils, strong acids, or bases outside the filter’s pH range.

Handle with clean gloves or tweezers to prevent contamination.

11. What troubleshooting tips exist for common issues?

If flow is too fast: ensure proper folding and full wetting of the paper.

If retention is low: confirm that the filter was pre‐weighed and dried correctly.

If the paper tears: check funnel size compatibility and handle gently.

12. How does No.5B compare with other ADVANTEC grades?

13. How can I order and who are the distributors?

Product code: ADVANTEC 01521047

Standard distributors include qtetech.com/en, Cytiva (Whatman), AS ONE, Merck Millipore, and Thermo Fisher Scientific.

Typical lead time: 3–7 business days, depending on location or contact QTE Technologies.