UV spectrophotometer If you have been to a chemical laboratory, you must be familiar with this instrument. To detect the type and purity of the substance, determine the composition and stability constant of the complex, study the reaction kinetics, organic analysis, etc., this instrument is inseparable. It is the UV spectrophotometer we are going to

Organic Structure Analysis and Infrared Chromatograph When we first heard the name of the infrared chromatograph, it should be said in the chemistry textbook that it can be used to test the functional groups of organic matter. The principle is because different structures absorb infrared light to different extents, which is reflected in the spectrum.

4 Types of Common Fire Accident Fire Accidents The occurrence of fire accidents is universal and can occur in almost all laboratories. The direct causes of such accidents are: 1. Forgot to turn off the power, causing the equipment or electrical appliances to be energized for too long, the temperature is too high, causing fire;

Capacity Analysis and Automatic Potentiometric Titrator The automatic potentiometric titrator is a common analytical instrument for capacity analysis designed according to the principle of potential method. The principle of the potential method is to select a suitable indicator electrode and a reference electrode to form a working battery with the solution to be tested. With

Solution pH and acidity meter At the middle school stage, we heard the teachers say that the PH test paper is used to test the acidity and alkalinity of the solution. When the test paper touches the solution, it will change color, and then read the PH according to the color. It was particularly magical

The maintenance of the test bench Among all laboratory furniture, the lab bench is the most frequently used laboratory furniture in the laboratory. How can we effectively clean and maintain the lab bench, thus reducing the loss of the lab bench and extending its working life? Let us now look at how to effectively maintain

Laboratory safety protection knowledge In the laboratory, corrosive, toxic, flammable, explosive and various types of reagents and easily broken glass instruments and various electrical equipment are often used. In order to ensure the personal safety of the inspectors and the normal operation of the laboratory, the inspectors should have safe operating knowledge and abide by

Relevant requirements for testing in the laboratory Chemical reagents are high-purity chemicals that meet certain quality requirements and are the material basis for analytical work. The purity of the reagent is very important for the analytical test. It will affect the accuracy of the result. If the purity of the reagent does not meet the

Basic steps in food inspection in the laboratory The basic steps of food inspection are: sample collection; sample processing; sample analysis and detection; analysis results recording and processing in four stages. 1 sample collection The collection of samples, also known as sampling and sample preparation, refers to the extraction of a representative sample for analysis

Main factors affecting the weighing results of electronic balances 1, storage time Electronic balances are themselves sophisticated electronic instruments. Once stored for a long time, they will cause deviations in their internal electronic systems, and then the results of the symmetry will affect them. Therefore, before using electronic balances for weighing, be sure to balance