Knowledge

Usage of petri dish in laboratory

Uses of Petri dish

Purpose and precautions of bottle washing

​The chemical dictionary tells you what bottle washing is, the cleaning method of bottle washing and the precautions for use.

Usage and precautions of beaker

Common specifications include 50ml, 100ml, 250ml, etc., but do not use a beaker to measure the liquid.

What can't a plastic measuring cylinder weigh

Generally, plastic measuring cylinders are not recommended to weigh organic solvents.

Precautions for cervical brush

Cervical brush film is not a drug, but a gynecological examination. It refers to taking a small amount of cell samples from the cervix of the uterus and putting them on glass, and

Precautions for microscope

The delivery method shall be correct. Because the reflectors are inserted under the mirror arm through the mirror handle and the eyepieces are inserted at the upper end of the lens

Purpose of test tube rack

The test tube rack is used to place the test tube, because the bottom of the test tube is protruding, so there is no place to put it without doing experiments.

Why is high and low temperature box much more expensive than high temperature...

High and low temperature boxes shall be equipped with compressors.

Difference and selection of flat bottom and round bottom (U-type and V-type) ...

Culture plates of different shapes have different uses.

What are the main classifications of reagent bottles

The preservation of reagents is inseparable from the outer packaging of reagent bottles. Different reagents need to be stored in plastic packaging.

Precautions for serological pipette

Before use: when using the disposable serum pipette, first look at the pipette mark, accuracy grade, scale position, etc. before use, wet the oil stain on the inner wall of the pip

Use steps of pipette

Select a pipette of appropriate specification according to the volume and requirements of the transferred solution.