... tester for paper and paperboard (RCT, ECT, PAT, FCT, CMT) 1. Ring crush test, 2. Edge crush test, 3. Flat crush test Crush tester for paper and ... etc.1. Description:PN-CT300B type crush tester is a new type of compression testing instrument developed by our company ... applies to the test of Ring Crush Test (RCT), Edge Crush Test (ECT). Flat Crush Test (FCT),Pin Adhesion Test(PAT).2. Applications ...