Hose detection method
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When the compatibility of a certain liquid and hose is uncertain, it is necessary to do the immersion test: take a sample tube and record the weight, diameter and length. The sample tube filled with liquid in the airtight container, soak for at least 48 hours, remove the sample tubes, washed with water, dried, re measuring the weight, observe the changes of diameter and length, at the same time, check the hose is soft or brittle. If there is any change, the hose is affected by the chemical effect of the liquid.