中国黄色a级片-欧美性色黄大片a级毛片视频-在线免费观看国产精品-日批视频免费看-亚洲精品无码专区久久久-成人三级a视频在线观看-六月丁香av-国产免费视频一区二区三区-亚洲一区影视-3d毛片-91狠狠干-国产极品粉嫩泬免费观看-99久久无码一区人妻a黑-热播之家-日韩少妇精品av一区二区

Common equipment

The equipment in each functional room of a chemical laboratory is different. Next, let's get to know the common instruments and equipment in each functional room.

Physical and chemical room: often used to operate physical and chemical projects, etc.; mainly equipped with laboratory benches, fume hoods, commonly used glassware, water baths, pH meters, multi-tube mixers, etc.

Inorganic pretreatment room: the main place for sample pretreatment and digestion, a lot of acid will be used, and a lot of acid mist will be generated; commonly used pretreatment equipment: acid tank, (dry sample and wet sample) grinder, temperature control Shaker, ultrasonic cleaner, desktop centrifuge, electric heating plate, microwave digestion instrument, etc.

Organic pretreatment room: the sample eliminates interference components before the determination, concentrates the components to be tested, so that the sample can meet the requirements of the analysis method; commonly used equipment: rotary evaporator, fast solvent extraction instrument, high-speed refrigerated centrifuge, Refrigerated centrifuge, homogenizer, ultrasonic cleaner, water bath constant temperature oscillator, parallel evaporator, nitrogen blowing instrument, etc.

Instrument room: large analytical instrument and small instrument room; conventional large analytical instrument: gas chromatography (GC), gas mass spectrometry (GC-MS), liquid chromatography (HPLC), liquid mass spectrometry (LC- MS), atomic absorption (AAS), atomic fluorescence, inductively coupled plasma emission chromatography (ICP), ICP-MS, ion chromatography, etc.

Balance room: often used for weighing samples and standards. The higher the accuracy of the balance, the higher the requirements for the environment. Influencing factors: temperature and humidity, airflow, vibration, etc. Placing analytical balances (one in 10,000, 0.1 mg) and micro balances (one in 10,000, 0.01 mg) have relatively high requirements for environmental temperature and humidity, and a buffer room should be set up in the balance room.

• Previous:How much do you know about chemical laboratory design-application fields and functional layout articles
• Next:Advantages and disadvantages of ultrasonic cell disruptor

• What are the specific operating steps of the multi-tube vortex mixer?2018-05-06
• Multiple functions of multi-tube vortex mixer2018-07-12
• Precautions for the use of multi-tube vortex mixer2019-11-08