All Products - High Purity Qualitative

Highly pure filter paper (approx. 0.08% ash) recommended for qualitative analysis in laboratories.

Made of super- refined cotton linters and cellulose.
alpha-Cellulose content above 95%, therefore ensuring high stability and durability of the papers
Very low content of minerals (approx. 0.08% ash)
For precise identification of materials and for sample preparation prior to sensitive detection methods

Specifications

Grade	Sample	Speed	Retention rate [µm]	Filtration Herzberg (s)	Thickness (mm)	Weight [g/m²]
B59501	Medium fine precipitates	Medium fast, thin	4 – 7	160	0.15	68
B59702	Medium-fine, crystalline precipitates	Medium fast	4 – 7	155	0.18	85
B59303	Fine precipitates	Medium slow	2 – 5	450	0.17	84
B60404	Coarse precipitates	Fast	12 – 25	50	0.19	79

* Approximate values, ** Measured with 100mm water column instead of 50 mm