Generally, a reagent bottle and a triangular bottle: first wash it with tap water, then put it into the ultrasonic wave containing clean water, add dissolved washing powder (or washing liquid), and wash it with ultrasonic wave for about 5 minutes, and keep the water temperature between 25-45 degrees Then clean it with tap water, and then rinse it with purified water for 3 times (flush it along the wall and shake it fully to improve the flushing effect. After cleaning, put it on the instrument rack and dry it naturally in a dust-free place

Accurate or difficult to wash glassware (burette, pipette, measuring bottle, colorimetric tube, glass vertical melting funnel, etc.): wash it with tap water first, drain it, and then treat it with chromic acid cleaning solution for a period of time (usually overnight), then wash it with tap water, and then wash it with purified water for 3 times

When washing the instrument, wash your hands with soap first, so as to prevent the greasy dirt on your hands from adhering to the instrument wall, which will increase the difficulty of washing

When the glass instrument is cleaned until the instrument is upside down, there is no water drop on the inner wall