Raw Material Certificate
Introduction Raw material certificate also called mill test certificate. Details Raw material certificate also called mill test certificate refers to the inspection and testing of the raw materials used in the production process to ensure that they meet the production requirements and standards. The purpose of raw material certificate is to ensure quality and prevent the use of inferior raw materials from causing product quality to be non-compliant. Main steps of raw material certification 1. Sample selection: Randomly select a certain number of samples from each batch of raw materials arriving as inspection samples. 2. Appearance inspection: Check the color, surface quality, etc. of the sample. 3. Physical property test: Including the density, strength, melting point, etc. of the sample. 4. Chemical composition analysis: Analyze whether the content of various elements in the sample meets the requirements. 5. Microbiological inspection: Detect ...