Laboratory sterilization methodGenerally speaking, sterilization is mainly divided into moist heat sterilization and dry heat sterilization. We will analyze these two methods today.1. Damp heat sterilizationAt the same temperature, warm heat has a better sterilization effect than dry heat. The reaso Read More

What safety measures are required in the laboratory1. A certain number of fire-fighting equipment must be stored in the laboratory, placed in an obvious place that is easy to access, designated by a special person, and regularly inspected and replaced as required.2. All flammable and explosive mater Read More

Preparation and precautions of glass instrument washing liquidWashing liquid is abbreviated as washing liquid, and there are various kinds of washing liquid according to different requirements. The more commonly used ones are introduced as follows.1. Strong acid oxidizer lotionStrong acid oxidizer l Read More

How to choose the speed of the centrifugeThe speed of the centrifuge is the centrifugal acceleration. The size of the centrifugal acceleration depends on the speed of the rotor and the radius of rotation of the particles.According to the classification of speed, centrifuges can generally be divided Read More

Reasonable choice of magnetic stir barThe magnetic stirrer is suitable for liquids or solid-liquid mixtures that are not very viscous. It can be stirred separately or heated and stirred at the same time. It uses the continuous circular motion of a magnetic stirrer placed in the liquid in a rotating Read More

Steps of washing glassware and drying method1. Common washing equipment(1) When washing the instrument, first wash your hands with soap to prevent oil stains on your hands from attaching to the instrument and increase the difficulty of washing. If the instrument is stored for a long time with dust a Read More

How to choose a centrifugeThere are many types of centrifuges, usually classified from the following aspects:(1) According to the rotation speed, it can be divided into: low-speed centrifuge, high-speed centrifuge and ultra-high-speed centrifuge;(2) According to the temperature requirements, it can Read More

The difference between pipettes, pipettes, and internal volume pipettesPipettes and pipettes are essential glass instruments commonly used in laboratories. The name pipette has gradually disappeared, and it has been changed to a multi-scale pipette. However, for the sake of table difference, this ar Read More

Correct use method and steps of volumetric flaskMeasuring flasks are mainly used to accurately prepare solutions of a certain concentration. It is a slender-necked, pear-shaped, flat-bottomed glass bottle with a ground stopper. The bottleneck is engraved with a marking line. When the liquid in the b Read More