Jiaojie Medium-Speed Quantitative Filter Paper

Name: Type C Magnetic Stir Bar
Brand: Canrd
Price: 5.14 USD
Availability: InStock

$4.53

Número do item:MA-CM-PF-000401

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✓ Selecionado: 7cm

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Detalhes

This Jiaojie brand quantitative filter paper is developed for precise gravimetric analysis and quantitative chemical experiments requiring accurate weight determination after filtration. Made from high-purity cotton fibers, the pulp undergoes hydrochloric and hydrofluoric acid treatment followed by distilled water washing, effectively removing most impurities and resulting in an exceptionally low ash content of less than 0.01% after incineration—critical for minimizing analytical error. Available in diameters of 7 cm, 9 cm, and 11 cm, this medium-speed variant offers a pore size of 30–50 µm and a filtration time of 35–70 seconds, balancing flow rate with retention efficiency for reliable separation. Common applications include laboratory filtration in quantitative analysis, weight-method assays, and any scenario where consistent, low-ash filter paper is essential for reproducible results. The standardized basis weight of 80 ± 4 g/m² ensures uniform performance across batches.

Product brand: Jiaojie Quantitative filter paper

Material: Made of cotton fibers

Product introduction:

Quantitative filter paper is mainly used for filtering and weighing analysis experiments after filtration, namely quantitative chemical analysis and corresponding analysis experiments by weight method. The ash content of each filter paper after incineration is a constant value; Qualitative filter paper is used for general filtration, namely qualitative chemical analysis and corresponding filtration separation.

During the manufacturing process of quantitative filter paper, the pulp is treated with hydrochloric acid and hydrofluoric acid, and then washed with distilled water to remove most impurities in the paper fibers. Therefore, the remaining ash content after incineration is very small, which has little effect on the analysis results and is suitable for precise quantitative analysis.

Product specifications:

7cm, 9cm, 11cm, 12.5cm, 15cm, 18cm

Model	Aperture (um)	Filtration speed (s)	Ash content (%)	Quantitative (g/m2)
Fast	80～120	<35	<0.01	80+/-4
Medium	30～50	35～70	<0.01	80+/-4
Slow	1～3	70～140	<0.01	80+/-4