How Is Pyrex Laboratory Glassware Engineered for Durability? So if we’re summing it up, how is pyrex laboratory glassware engineered for durability? Pretty much at every step. The material is chemically tuned. The melting and shaping are tightly controlled. The cooling process is slow on purpose. The walls are consistent. The shapes avoid stress traps. The chemical resistance is built-in. And the testing filters out anything that might betray someone mid-experiment. Read More: https://candidecoin.com/uncate....gorized/how-is-pyrex