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Manufacturer/company:

Company Name

Knauf Ceiling Solutions GmbH & Co. KG

Elsenthal 15
Grafenau
Germany

Number of projects
6
Number of test pieces
49
Phone

-

Email

-

Website

-

Documents

KN 2409-1561_certificate_08.pdf
Valid until 02.10.2029
Download
KN 2409-1561_statement_08.pdf
Valid until 02.10.2029
Download

Test piece

Name of test piece/s Sierra OP
Description Size: 1200 x 1200 x 15 mm; grid system: KCS T 24
Project number KN 2409-1561
Created on 06/16/2025
Valid until 10/02/2029
Test type Particle emission (ISO 14644-1, -14)
Classfication Suitability for air cleanliness class: (ISO-Class):2

Tests & results

Particle emission (ISO 14644-1, -14)

Particle emission (ISO 14644-1, -14)

Test parameter(s)

Air Cleanliness Class

Structure-borne noise = approx. 50 Hz

2

Overall result

2

It must be pointed out, that according to ISO 14644-1 cleanrooms classes 1 to 5 have a high filter occupancy, with the result that large-surface ceiling systems cannot be used in some cases. Cleanrooms with a horizontal displacement flow form an exception to this.
The test result may be influenced by the surrounding ceiling system, in particular the material pairing between the light and ceiling frame, as well as other assembly accessories. Particle emission behavior should be re-assessed in the respective assembly situation. The cut edges/back are made of very porous material. Therefore, the use of the test piece in clean/hygienic areas is considered to be critical.

Please note: Transport damages, incorrect installation, aging behavior, corrosion etc. can influence the test result.