Laboratory equipment - essential equipment for chemical analysis and experimentation
Introduction
Laboratory is an essential place in research and teaching, and laboratory equipment is essential equipment for chemical analysis and experimentation. There are many kinds of laboratory equipment, including common basic laboratory equipment, analytical instruments, reagents and consumables. This article will provide a detailed introduction to laboratory equipment to help readers better understand the types, uses and operation of laboratory equipment.
Laboratory basic equipment
Laboratory basic equipment includes laboratory tables, laboratory chairs, laboratory cabinets, laboratory chests of drawers, laboratory sinks and so on. These basic equipments are the foundation of chemistry experiments, without which chemistry experiments cannot be carried out. Among them, the material of laboratory table is usually solid wood or artificial board, and the desktop is usually acid and alkali resistant to facilitate the use and cleaning during the experiment. The height of the laboratory chair is usually 75cm, which can be adjusted as needed. Laboratory cabinets are generally divided into reagent cabinets and instrument cabinets, reagent cabinets are generally used to store reagents and consumables, instrument cabinets are generally used to store instruments and equipment. Laboratory drawer cabinets are generally used to store small reagents and consumables, easy to access. Laboratory sinks are generally used for cleaning laboratory vessels and laboratory tables.
Analytical instruments
Analytical instruments are one of the essential equipment in the laboratory, they can be used to analyze the composition, structure and properties of substances. Common analytical instruments include gas chromatograph, liquid chromatograph, mass spectrometer, atomic absorption spectrometer, ultraviolet spectrophotometer and so on. The operation methods of these instruments are different and need to be operated according to the specific instrument. Take the gas chromatograph as an example, the operation steps are as follows:
1. Turn on the power of the gas chromatograph and wait for a period of time to make it warm up.
2. Prepare the sample and inject the sample into the inlet of the gas chromatograph.
3. Set the parameters of the gas chromatograph, including the injection volume, temperature, flow rate and so on.
4. Start the gas chromatograph and begin to analyze the sample.
5. After the analysis is completed, turn off the power of the gas chromatograph and clean the injection port and column.
Reagents and consumables
Reagents and consumables are essential items in the laboratory, reagents include commonly used acids, bases, salts and organic reagents, etc., and consumables include filter paper, pipettes, beakers, measuring cylinders and so on. The choice of reagents and consumables should be selected according to the needs of the experiment, and at the same time, attention should be paid to the storage and custody of reagents. The storage of reagents is generally required to be dry, protected from light, heat and moisture, while the reagents should be labeled with information such as name, batch number, production date and expiration date. The use of consumables should be cleaned and sterilized to avoid cross-contamination.
Ending
Laboratory equipment is the necessary equipment for chemical analysis and experimentation, including basic laboratory equipment, analytical instruments, reagents and consumables. In the use of laboratory equipment, pay attention to the safety and operational norms, comply with the relevant provisions and standards of the laboratory. Through the introduction of this article, I believe that the reader has a better understanding of the laboratory equipment, and can better carry out chemical experiments and scientific research.