Français
Español
Português
Italiana
한국의
日本語
pусский
Deutsch
Sponge compression degree test
We use this instrument to repeatedly compress the sponge to test the hardness, elasticity and comfort of the mattress.
The test machine was used, and the 3 guns were respectively pressed down to 25%, 40% and 65% of the original thickness to obtain an index of comfort (compression ratio = 65%/25%). This unit is regarded as "N".
