How to clean glass instruments in laboratory Glass instruments commonly used in laboratories such as beakers, test tubes, burettes, pipettes, volumetric flasks, etc. The instrument will be stained with oil, scale, rust, etc. during use. If it is not cleaned in time, it will cause errors in results and even have extremely adverse effects on

You must be familiar with the distillation bottle. It is a glass container for liquid distillation or fractionation. It is often used with a condenser, a liquid pipe, or a liquid adapter. It can also be equipped with a gas generator. Precautions for use of the distillation flask. Asbestos mesh should be placed when heating,

In the analysis work, washing glassware is not only preparatory work before the experiment but also technical work. The cleanliness of laboratory glassware directly affects the experimental results and even determines the success or failure of the experiment. Because the utensils are not clean or contaminated, they often cause large experimental errors, and even the

First, the mistakes in the washing of glass glassware 1. Cleaning of glassware is the first step in the inspection work. In practice, many people often neglect to clean the glassware used immediately before and after the inspection, or to clean the appliance. As a result, the inner wall of the appliance is heavily hung

Laboratory operation precautions 1. It is forbidden to eat and drink in the laboratory. Someone once ate something while watching the microscope and drank the reagents nearby. Although it was urgent to wash the stomach, it was inevitably disabled. It is also forbidden to use the reagents in the laboratory as “foods and additives”, such

First, what is the effect of bubbles in the burette to the test results? 1. If there is a bubble at the beginning, it is equivalent to displaying more liquid than the actual one (because the gas is supported), so the volume of the final titration solution is too large, and the concentration of the