(1) Attach an assembled testsampie to a test stand
(2) Dip a brush into any of the solvents ST-7 and CPC to the surface of the test
sample two or three timer but not so much the solvent starts to drip. Then leave the test sample
for 30 minutes at room temperature.
(3) Use a sponge or equivalent to wash out the ST-7 and CPC that has adhered to the surface of the
test sample , with water at normal temperature for one or two minutes. Then wipe away the remaining
water on the surface of the test sample with a cloth
(4) Place the test sample in the thermostatic chamber kept at 60°C and leave it for 3 h.
(5) Take the test sample out of the thermostatic chamber and checkit in detail.