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lab furniture descriptions
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                lab furniture descriptions

 

lab furniture Concept: it is the platform that needs to be used in the physical and chemical experiments. Other central laboratory, ventilation cabinet, medicine cabinet, etc..
lab furniture Ventilation cabinet main function: the function of ventilation cabinet most is the exhaust function, in the chemical laboratory, experimental operation produce harmful gases, odor, moisture and flammable, explosive, corrosive substances, in order to protect a user's security to prevent the pollutant to the laboratory diffusion, to use ventilation cabinet in the vicinity of pollution source, ventilation cabinet uses fewer units in the past, only in particularly harmful and dangerous gas and produced a large number of experimental heat used in. Ventilation cabinet only responsible for the auxiliary function of the experimental platform.
In consideration of the improvement of the experimental environment, the experiment was carried out on the experimental bench gradually transferred to the ventilation cabinet. This requires the ventilation cabinet to have the most suitable for the use of equipment functions. Especially the most new laboratories are required to have air conditioning. Therefore, in the preliminary design stage of construction to ventilation cabinet units will be included in the plan of air conditioning system. Because the ventilation cabinet in the biochemical laboratory occupies very important position, from improving laboratory environment, improve working conditions, improve work efficiency and consideration, ventilation cabinet use units leap to increase. The attendant is ventilation pipes, exhaust piping, wiring, etc. have become an important topic in the construction of laboratory. Use ventilation cabinet is the biggest purpose is discharged harmful gas produced in the experiment, to protect the health of laboratory personnel, is also said to have a high degree of safety and superior maneuverability, which requires ventilation cabinet should have the following functions:
(1) release function: it should have the way to absorb the harmful gas produced in the fume hood by the way of absorbing the gas outside the cabinet, so that it can be diluted by the outside.
(2), do not back function: should have in the ventilation cabinet by the exhaust air flow generated by the exhaust gas will be harmful gas from the inside of the ventilation cabinet does not reverse flow into the interior of the function. To ensure the realization of this function, a fume hood and a ventilation machine with single pipe connection is the best way, can not be used single pipe connection, is only restricted in the same layer in the same room can be and even, ventilation fans as much as possible installation at the end of the pipeline (or layer at the top).
(3) isolation function: in front of the fume hood should be provided with no sliding glass window to separate the inside and outside of the ventilation cabinet.
(4) the additional function: the passage or replacement of the air intake air from the outside of the fume hood shall be discharged when the harmful gas is discharged.
(5) the function of controlling wind speed: to prevent the harmful gas from escaping in the fume hood, it is required to have a certain intake speed.
Factors that determine the inlet velocity of the air inlet of the ventilation cabinet: the heat and the relationship between the heat and the number of ventilation.
Among them, the main is the experimental content and the nature of harmful substances. Commonly prescribed, general toxic pollutants of 0.25 - 0.38m/s, toxic or hazardous substances is 0.4 - 0.5 m / s, toxic or have a small amount of radioactive 0.5 - 0.6m/s, gaseous 0.5m/s, particulate matter of 1m / S. In order to ensure the wind speed, the air exhaust fan should have the necessary static pressure, that is, the friction resistance of air through the ventilation duct. In addition, it is necessary to pay attention to the noise when determining the wind speed. Through the air flow in the pipeline to 7 10m limit, more than 10m will produce noise, usually Laboratory (indoor background noise level) noise limit value of 70dBA. Increasing the pipe cut area will reduce the wind speed, and reduce the noise. Taking into account the funding and construction issues, we must carefully select the power of the pipe and the exhaust fan.
(6) heat and acid alkali corrosion resistance function: ventilation cabinet to be placed inside the furnace, and some experiments to produce a large amount of acid and alkali and other toxic and harmful gases are highly corrosive. Ventilation cabinet table, lining plate, side plate and the water nozzle, a gas nozzle should have anti-corrosion function etc.. In semiconductor industry or corrosive experiment using sulfuric acid, nitric acid, hydrofluoric acid and other acid also asked ventilation cabinet overall material must be anti acid and alkali, shall be made of stainless steel or PVC material.
Medicine cabinet
The cabinet is the main storage medicine and reagent of the laboratory furniture. According to the product material and can be divided into the whole wood type, all steel type and all PP type. According to the safety index can be divided into ordinary type and pumping. The purpose is to make the most proper preservation of toxic and harmful substances in the laboratory.
Safety (explosion-proof) cabinet
Special reagents and drugs in the laboratory, such as concentrated hydrochloric acid, concentrated nitric acid, flammable and explosive drugs, etc., can be connected with ventilation.
The experimental station
The experimental station
Biological safety cabinet
Biological safety cabinet is for operation in primary culture, strains and diagnostic specimens with infection of experimental materials, used to protect the operator himself, the laboratory environment and experimental materials the exposure in the process may produce infectious aerosols and splatter designed to avoid.
Furniture, laboratory furniture

 

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lab furniture descriptionslab furniture descriptions

Pub Time : 2016-01-14 21:09:15 >> News list
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