Profile: Ray-Ran Test Equipment Ltd. is a provider of engineering & scientific equipment. We are an ISO 9001 certified company. We also provide polymer testing, sample & component testing, and raw material evaluation services. In our sample & component testing, the cold flex temperature determines the effects of low temperatures on the stiffness of the polymer material. The apparatus consists of a fixed clamp and a revolving clamp which holds the test sample rigidly at each end. The test sample is submerged in a low temperature liquid bath. The revolving clamp connects to a pulley dial indicator, graduated in 1 degrees, which is subject to a given torque produced by a dead load acting at a fixed radius.