Sterilization by ultraviolet sterilizer principle

The sterilization principle of the ultraviolet sterilizer is to use the irradiation intensity of the ultraviolet lamp, that is, the irradiation intensity emitted by the ultraviolet sterilization lamp is inversely proportional to the distanc...

Principle of liquid density meter

Density meter produced by Zhengzhou Nanbei Instrument Equipment Co., Ltd .: The density meter used in physical experiments is an instrument for measuring the density of liquids. It is manufactured and operated according to the principle tha...

How to choose the protective clothing?

How to choose the protective clothing that suits you is a science. We have summarized 7 key points to teach you how to choose the protective clothing that suits you. These 7 key points are Protective function 2. (Re mention) protection func...

How to choose a mask, which masks is good?

How to choose a mask, which masks is good? 1. Does wearing a mask really work? it works! However, wearing a mask and washing your hands frequently must be performed simultaneously. 2. Types and uses of masks Recommendations: N95 (with or wi...

Water quality analyzer precautions

Water quality analyzer is suitable for water source monitoring, environmental monitoring stations, municipal water treatment processes, municipal pipe network water quality supervision, rural tap water monitoring; circulating cooling water,...

Why does the biochemical incubator freeze?

The biochemical incubator has a cooling function. The equipment will freeze and block in the process of use. The main reasons for this phenomenon are as follows: 1. There is too much water in the refrigerant, and the charging will cause ice...

Precautions when using rotary evaporator

Precautions when using rotary evaporator: 1. When using, first draw a small vacuum (about 0.03MPa), and then open and rotate to prevent the distillation flask from slipping. When stopping, stop the rotation first, hold the distillation flas...

Maintenance of the incubator

1. The surface of the constant temperature incubator should be scrubbed frequently to keep it clean. Avoid the side of the instrument control box when scrubbing, so as not to drip water into the instrument and damage the instrument. 2. For...

The correct inspection method of vacuum pump

The correct inspection method of vacuum pump: 1. See if the main technical performance (vacuum degree, etc.) of the vacuum pump meets the design requirements or process requirements, whether the auxiliary equipment such as the condenser is...

Muffle furnace safe use method and precautions

Muffle furnace is a kind of industrial general heating equipment. It is also very common in many types of laboratories. According to the appearance and shape, it can be divided into box furnace, tube furnace and crucible furnace. 1. The ref...

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