Industry News
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Laboratory chemical analysis instrument operation skills summary! (2)
Laboratory chemical analysis instrument operation skills summary! D.Solution and precipitation separation Solution and precipitation can be separated by three methods: decanting, filtration and centrifugation. 1. The decanting method When the density of precipitation or crystallization of larger ...Read more -
Laboratory chemical analysis instrument operation skills summary! (1)
Laboratory chemical analysis instrument operation skills summary! (1) Daily laboratory operation skills, hope to give you help! A.Glass instrument washing Washing methods are summarized as follows: 1. Scrub with water: It can wash the soluble material and make the dust attached to the instrument ...Read more -
Summary of microbe sampling, sample preparation techniques and dilution, inoculation and culture methods!(2)
Summary of microbe sampling, sample preparation techniques and dilution, inoculation and culture methods!(2) 1.Inoculation method of sample solution: 1.1. Pull out the suction tube along the upper wall of the tube, blow and wash the suction ear ball beside the flame, insert the suction ear ball ...Read more -
Summary of microbe sampling, sample preparation techniques and dilution, inoculation and culture methods!(1)
Summary of microbe sampling, sample preparation techniques and dilution, inoculation and culture methods!(1) 1.Sampling preparation 1.1. When sampling, the sample must be representative of the product. Frozen samples retrieved from the workshop should be thawed as required, dry food can be placed...Read more -
How to use separatory funnel?
How to use separatory funnel? The main purpose of the separatory funnel: ①Separate two liquids that are stratified and do not react ②Extract a certain component from the solution ③Wash the product with water or alkali or acid ④ Replace the dropping funnel and add reagents dropwise Points to note...Read more -
Distracted by these “little troubles” in the laboratory? Look here, there are good ideas!
Distracted by these “little troubles” in the laboratory? Look here, there are good ideas! In the laboratory, in addition to the first problem “washing the bottle”, everyone often encounters some large and small problems, such as the bottle stopper sticking and not opening,...Read more -
Use of extraction and separation funnel
Use of extraction and separation funnel Extraction is one of the common operations for separating and purifying organic compounds. The application of extraction allows the extraction of desired substances from liquid or solid mixtures, the former called “liquid-liquid extraction” and...Read more -
These factors can affect the accuracy of the glass gauge in the laboratory
1.The temperature of the gauge The capacity of the gauge varies with temperature. The temperature at which a gauge is measured in or out of its nominal capacity is the standard temperature. The body thermal expansion coefficient of glass used in the manufacture of gauges is in the range of 10×1...Read more -
How to keep glass instruments dry?
How to keep glass instruments dry? The glass instruments used for chemical analysis should be washed and dried after each experiment. The instruments used in different experiments have different requirements for drying. Generally, the beakers, conical flasks and other instruments in quantitative ...Read more
