lab Glassware use and properties Glassware is one of the most frequently used instruments in the laboratory, and no material can predict it. However, in order to better use glassware, in addition to the basic operating skills, it is also important to understand the material properties of glassware, which will give you a deeper understanding

Japanese university laboratories have done these 5 points The research level of Japanese universities is at the forefront of the world, and research work is also very active, and these are often attributed to their adequate teaching resources, spacious experimental sites and advanced equipment. This paper introduces the experimental environment and experimental conditions, experimental raw

Why are glass cuvettes used? Historically, reusable quartz cuvettes were required for measurements in the ultraviolet range, because glass and most plastics absorb ultraviolet light, creating interference. … Glass, plastic and quartz cuvettes are all suitable for measurements made at longer wavelengths, such as in the visible light range. Why is glass cuvette not suitable for UV? Glass cells are most common in

maintenance of precision instruments For different instruments, there are some specific requirements. Taking the atomic fluorescence spectrometer as an example, it may cause the following problems in the laboratory environment: the fluorescence value is abnormal during the test, the test line fluctuates greatly; the hydrogenation atomizer has no flame; the test has no test line

Cleaning standard for laboratory glassware 1. cleanser and its scope of use The most commonly used cleaners are soap, soap liquid (special products), detergent, decontamination powder, lotion, organic solvent and so on.Soap, liquid soap, washing powder, and detergent powder, used for glassware, can be directly brushed with a brush such as beakers, flasks, bottles; lotion

How to use the measuring cylinder A graduated cylinder is a measuring tool that measures the volume of a liquid. Before using the measuring cylinder, we should first check the measuring range and the minimum scale value of the measuring cylinder. When reading, the measuring cylinder must be placed flat on the horizontal table. After

How to use the burette Laboratory Burette In general, the burettes used in chemical laboratories mainly include non-plug burettes, seat burettes, three-way piston burettes, plug burettes, and side piston burettes. Among them, the advantages of the plugless burette and the stopper with the plug burette are most prominent. 1. Selection principle From the perspective of

As an important base for scientific research and personnel training, the laboratory is in crisis and has frequent accidents. This is especially true in chemical laboratories, which use a variety of hazardous chemicals and various types of electrical equipment, and often involve high temperature, high pressure, vacuum, radiation, magnetic fields, strong (excited) light and other

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,