What are the considerations when handling lab benches?

The following points should generally be taken into account when handling laboratory benches:

Such substances containing complex ion chelation and waste liquids are not completely treated by the addition of sometimes eliminating drugs. Therefore, it is necessary to take appropriate actions to prevent the direct release of a part of the harmful substances without treatment.

Sodium hypochlorite is added to decompose the cyano group in order to produce free chlorine, and the treated wastewater is often harmful due to the precipitation of sulfides to treat waste liquid and water-soluble sulfides. Therefore, they must be dealt with.

Touch with harmful substances such as filter paper, wrapping paper, cotton paper, waste activated carbon, and plastic containers, and do not throw garbage into the box. Separate collection, incineration or other appropriate **, then continue to remain.

When disposing of the waste liquid, in order to save the drugs used in the treatment, the wasted chromic acid mixture can be used to break down the organic matter, and the waste acid, waste alkali neutralize each other. Waste liquid should be actively considered.

As far as possible, use harmless or alternative drugs that are easy to deal with, and replace chromic acid mixtures that will discharge harmful waste liquids.

Methanol, ethanol, acetone and benzene are used as solvents, in principle in the dosage, **it, and the residue will be disposed of.

These are just a few of the things you should keep in mind when working with your laboratory bench.

1.Wear lab coats, gloves, goggles and other safety protective equipment, and keep them clean and tidy.

2.Familiar with the experimental equipment and its use methods, abide by the operating procedures and the guidance of the organization.

3.Before the experiment, carefully read the coarse jujube, read the experimental guide and related literature, and understand the experimental principle and possible risks.

4.When conducting high-risk experiments, detailed experimental protocols and emergency plans should be formulated and reviewed and approved by the instructor.

5.Hazardous wastes, chemicals and other harmful substances generated in the experiment should be treated scientifically and properly, and it is forbidden to dump and discharge them at will.

6.During the experiment, it is strictly forbidden to eat, drink, smoke and other behaviors, and pay attention to self-hygiene and environmental hygiene.

7.No playing, fighting, chasing and other activities are allowed in the laboratory, and it is strictly forbidden to transfer or change experimental equipment or reagents without permission.

8.The laboratory should be kept clean and hygienic to avoid the accumulation of debris and improper placement.

In short, the safety of laboratory operation is the most important thing in the experimental process, and we must attach great importance to it and strictly abide by the norms and standards to ensure our own safety and the safety of the laboratory environment.

1. The relative humidity in the laboratory should be controlled at about 50-70%;

2. The light in the laboratory and on the laboratory table should be suitable for experimental operations and other daily work in the laboratory.

3. The temperature of the standard laboratory should be controlled at about 20 degrees Celsius, and no more than five degrees Celsius up and down;

4. The functions of shielding, dustproof, noise, anti-corrosion, shockproof and other aspects in the laboratory should meet the requirements of these instruments and equipment for the laboratory environment; It also needs to meet the requirements of the experiment to be conducted.

1. Lighting of Xige-laboratory: Generally, the physical and chemical laboratory facing southeast is convenient for lighting; The instrument room should be northwest facing and is helpful for constant temperature and humidity control.

2. Laboratory ventilation: It is very important to have a reasonable ventilation rate and the supplement of healthy air for laboratory staff and the accuracy of experimental data.

3. Laboratory, water, electricity, water and the electricity of the laboratory layout system are important bases for the planning and design of the laboratory.

4. The required size of the laboratory corridor and doors and windows: the width of the corridor should be 5 feet, about 1500 mm, and the frame size (width * height): 7 feet * 3 feet, about 900 mm * 2000 mm.

We are often concerned about the quality of laboratory furniture sicolab, in fact, this is also a very normal need; However, we ignore the other problem, such as the staff's selection of the countertop material of the laboratory console, if the corrosion-resistant physical and chemical board material is selected, it is necessary to pay attention to the matters used, otherwise the best material will reduce the service life;

Corrosion-resistant physical and chemical boards include thin corrosion-resistant physical and chemical boards and thick veneer physical and chemical boards, which are high-quality surface materials with various test results that exceed the NEMA standards in the United States, which are worthy of your trust, but if you use them improperly, they will still cause damage, so please pay attention to the following precautions in use.

1. Do not let the sulfuric acid or nitric acid with a concentration of more than 95% contact with the corrosion-resistant physical and chemical board for a long time, especially do not contact for more than 4 hours.

2. The high temperature of more than 180 will cause the surface paper of the corrosion-resistant physical and chemical board to change color or blister, so do not let the melted metal, sparks and objects that cannot know the temperature come into contact with it.

3. When using overheated glass dishes or using coal stoves, electric stoves, gas stoves, and alcohol stoves, these heat sources should be placed on the heat-insulating porcelain tiles or triangular brackets, and should not be in direct contact with the countertop.

4. Do not use abrasive, acidic, alkaline or corrosive detergents when cleaning corrosion-resistant physical and chemical boards, so as not to affect the surface, under normal circumstances, you can rinse with clean water, for stubborn stains, you can use hypochlorous acid to clean and rinse with water immediately: it is strictly forbidden to scratch the countertop with sharp metal objects.