Abstract
As we all know, glass instrument reactive substances in Physical, chemical experiments, bloom residue attached to the inner wall of the instrument after a chemical reaction, often heated to high temperatures or placed the longer reactive substances glass instrument, but not easy to clean. Use unclean instruments, will affect the experimental results, and even let the experimenter observed error phenomenon, induction, reasoning out the wrong conclusions. Therefore, the chemical experiments using glass instruments must be washed clean. In this paper, by using ordinary scrub, ultrasonic cleaning, using a muffle furnace or oven drying, last extraction air form headspace and using GC-MS to detect it, then you will know glass instrument is thoroughly clean or not.
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