Disease Prevention and Control Center laboratory equipment list 1 Gas Chromatograph: Qualitative and Quantitative Analysis 2 Abbe refractometer: measuring the refractive index and average dispersion of transparent translucent liquid or solid 3 ammonia analyzer: measuring the content of ammonia in the sample 4 Mercury analyzer: measuring mercury content in solid and body liquid samples 5

Maintenance and repair of chemical equipmentThe working environment of chemical equipment is often harsh, not high temperature and high pressure, vacuum or ultra low pressure, which is prone to corrosion, burning and explosion. The cost of chemical products itself is relatively expensive, and it is shouldering the arduous task of production. Once a failure occurs,

Reactor operating procedures First. Inspection and preparation before start-up 1. The body of the reaction pot is clean and tidy, and the accessories are complete.Pressure gauges, vacuum gauges, thermometers, safety valves, valves, and steam traps on the pot should be sensitive and accurate and have regular calibration marks.Safety protection, ventilation, explosion-proof and other devices are

lab glassware use (1) Test tubes are commonly used: small amount of reagent reaction vessel; It can also be used as a container for collecting small amounts of gas; or a generator for installing a small gas. (2) Beakers are mainly used for:  to dissolve the solid substance, the preparation solution and the dilution and

Atomic fluorescence solution configuration The preparation of the atomic fluorescence standard solution is a dilution process, and the high-concentration standard solution to be purchased is diluted to the required concentration as required, and becomes a concentration sequence, and the measured atomic fluorescence value is linearly determined. Therefore, the preparation of the solution will directly affect

Bad habits in the labGood experimental habits can help the experimenter better complete the experimental project, and a bad habit is likely to ruin your experiment. Bad habits during the experiment 1. When the sample is weighed or measured, the data is first recorded on the draft paper, and the sample is finished and then

10 situations to use a burette 1. What is the method of oiling an acid burette? A: Remove the piston, use a clean paper or cloth to dry the inner wall of the piston and the sleeve. Use a finger to pry a small amount of Vaseline to apply a thin circle on both ends

How to eliminate the systematic error in the experiment?Systematic error is the difference between the average of the results of an infinite number of measurements of the same measurement and the true value being measured under repetitive conditions. It is often caused by unavoidable factors. Causes of systematic errors The systematic error is caused by

How to check the instruments in the laboratory? In recent years, with the development of science and technology, the increase of experiment and testing tasks, the number of purchases and procurement methods of laboratory instruments and equipment have undergone tremendous changes, and the acceptance of instruments and equipment has become a major task that cannot

How to effectively eliminate bubbles in the burette? Eliminating the bubbles in the burette is an important step in the titration, which directly affects the detection results. Then, how to effectively and quickly eliminate the bubbles in the burette? First, what is the effect of bubbles in the burette on the test results?1. If there