English (EN) EN

Quality Control

Every chemical reagent and diagnostic substance is only as good as its quality. Highest quality standards are the key driver of success for any company in the areas of chemicals and diagnostics. The quantitative filter papers of Hahnemühle are the purest paper in the filter market.

 

Target User:
QC departments of pharmaceutical industries, independent institutes and governmental control labs.

 

Typical features of the filter papers:
The average ash content of our quantitative papers is 0,004%, and 0,002% ash of the hardened quantitative papers - the purest paper in the filter market.

back to overview

OBJECTIVE

TECHNIQUE

TYPE of FILTER

PART NUMBER-GRADE

Separation of solids from suspensions

Filtration (Funnel, Büchner)

Filterpaper for clarification/

general use

0860, 0858

Gravimetry

Filtration (Funnel, Büchner)

Filterpapers for qualitative analysis

589/1   589/2

589/3   589/4

589/5   589/6

Clarification of samples

Prefilter of membranes

Glass Microfibre filter

GF 9

Microbiological

analysis

Detection of microorganisms

Cellulose nitrate membranes  0.45 or

0.2 mm, sterile, gridded

NCS 045 47 BC

NCS 020 47 BC

Clarification of biological liquids

Cellulose acetate membranes, 0.45 mm or  0.2 mm

Syringe filter with Cellulose acetate  0.45 mm or 0.2 mm, sterile

AC 02047BL

AC 04547BL

SACS 045 25 100

SACS 020 25 100

Identification of pathogens / resistance against antibiotics or chemotherapeutics

Measurement of the inhibition zone on inoculated nutrient agar

Cotton-Linters papers of highest purity

Thickness: 0.35 mm

0.90 mm

0.73 mm

22

2668

3324

HPLC

Preparation of organic samples

Syringe filter, Nylon or

Regenerated Cellulose,  0.2 µm

SNY 020 25 100

SCR 020 25 100

Filtration of mobile phases

Regenerated Cellulose oder Nylon membrane, 0.2 µm

CR 020

NY 020