High and low temperature test chamberThe performance parameters of the selection are determined in the following three aspects:

① Comparison and selection with the common models on the market.

According to the market survey, the general model specifications can be obtained, and whether the main parameters consider the monitoring requirements.

② Select the type according to the technical parameters of the instrument specified in the inspection standard.

The specifications for equipment characteristics and precision are the key parameters for investigating the purchase of equipment.

③ Comparison and selection of instruments purchased from similar quality inspection institutions.

We can consult the high and low temperature test chamber purchased by the same industry laboratory with similar monitoring new projects. Due to a period of application work experience, we can have a more comprehensive grasp of the characteristics of the equipment and after-sales service. In addition, you can consult the measurement verification organization, because this kind of enterprise often shows the correction report, this kind of organization can show more information applicable to the characteristics of a certain commodity.

Select manufacturers with solid reputation and quality, and be able to achieve long-term collaboration with each other under the conditions permitted by the standard. The selection of such manufacturers not only ensures the quality of the products, but also enables the distributors to be independently searched when there are some problems in the finished products, to discuss with each other, to solve the difficulties in a friendly way, and to reduce the probability of problems in the experiment. In the laboratory general equipment constant temperature water bath, day fair equipment, select a solid agent to supply goods, such goods because of the large demand, manufacturers in the laboratory local agents often bear the supply and after-sales service problems. According to this type of approach, the use of agent sales, can get a stronger price discount. In addition, in the after-sales maintenance service, a large agent usually has a spare parts library locally, which can quickly deal with common equipment failures. In the purchase of a higher price of high and low temperature test box, generally immediately contact the manufacturer to buy, can save the redundant retailer stage. When purchasing expensive imported equipment, usually scientific research public welfare and other institutions have tax-free policy qualification certificates, and generally authorize technical professional equipment import and export companies to apply for relevant procedures to improve work efficiency.

In the high and low temperature test chamber, attention should also be paid to their service life and precautions, make corresponding records, and conduct verification or calibration before putting into use. For large-scale test equipment, their maintenance may have some troubles. When purchasing these equipment, we should pay attention to their precautions and send people to carry out corresponding learning and training to reduce the damage to them in future use and prolong their service life. Some test equipment can not be put together, for example, some equipment will be magnetic, and some measuring equipment for accuracy requirements are higher, therefore, in the placement of equipment should pay attention to whether they affect each other. For the service life, managers must have a clear record, which is of great significance to the accuracy of the test. Therefore, regular inspection and maintenance of the high and low temperature test chamber should be carried out, and the use files and manuals should be established at the same time.

Actively make use of the preferential policies for the introduction of advanced equipment promulgated by the local Science and Technology Commission and the Science and Technology Bureau, and apply for tax exemption for the purchase of instruments from the local customs authorities for qualified scientific research institutions, so as to reduce the cost of purchasing advanced imported instruments.