Simple method: suitable for construction sites, workshops and other occasions without precision equipment, only qualitative judgment can be made. Put the product in a 150-degree oven, and the one that softens after a few minutes is the real PPR tube, and the one that does not soften is counterfeit; accurate method: DSC method: use DSC, the operating conditions are: the heating rate is 10°C/min, the melting peak range of PP-R is 145-155°C, according to which PP-R can be easily and quickly distinguished from other materials.
