Standard test dust
The cotton specially cut by DMT is part of the simulated house dust DMT test dust type 8® and is specified in IEC 62885 / IEC 60312 / DIN EN 60312. This cut cotton is also used as a pure component for various filter technology tests.
(For fiber length distribution see standard)
Since cotton is a natural product, the fiber structure and composition are subject to certain natural variations. DMT GmbH & Co. KG is accompanied by strict quality monitoring, which begins with the supplier to achieve a high batch to batch comparability.
Our specifications must be strictly observed during storage. Increased humidity can greatly accelerate the natural decomposition process.
The specified particle size distribution is shown in the following table:
|x (mm)||q3(x) (%)|
|0 - 0.2||0.75|
|0.2 - 0.5||6.25|
|0.5 - 1.2||22|
|1.2 - 2.0||25|
|2.0 - 3.2||22|
|3.2 - 4||24|
Transport and Storage
In order to achieve reproducible quality, the raw materials and production are strictly controlled. The following quality controls are carried out:
Monitoring the particle size distribution of raw materials
Monitoring the particle size distribution of the end product
|Name :||DMT Cut Cotton („Cotton-Linters“) | 188.8.131.52|
|Standard:||IEC 60312 (2008), IEC 62885-2 (2018), DIN EN 60312-1 (2017)|
|Title of Standard:||Surface cleaning appliances - Part 2: Dry vacuum cleaners for household or similar use / Vacuum cleaners for household use. Dry vacuum cleaners. Methods for measuring the performance|
|largest particle size (µm) :||4000|
|Bulk density (g/cm³):||0,05|
|Substance density (g/cm³) :||1,51|