How to judge the quality of dry powder extinguishing agent？
To judge the quality of dry powder fire extinguishing agent, it can be comprehensively evaluated from the following aspects:
1、Product identification and certification
Check whether the product has clear identification, including manufacturer information, product model, production date, shelf life, etc.
Check whether the product has passed the relevant quality certification, such as ISO 9001 quality management system certification, CE certification, UL certification, etc. These certifications usually indicate that the product has followed certain quality standards and specifications during the manufacturing process.
2、Appearance inspection
Observe the color and texture of the dry powder extinguishing agent. High-quality dry powder extinguishing agents are usually uniform in color and free of caking and impurities.
3、Weight check
Weigh and check whether the weight of the dry powder extinguishing agent is consistent with the label. If the weight is insufficient, it may mean that the dry powder content is insufficient or there are other problems.
4、Chemical composition analysis
If conditions exist, chemical composition analysis can be carried out to check whether the main components of dry powder fire extinguishing agents meet the requirements of the standard. For example, the main components of ammonium phosphate dry powder fire extinguishing agent should be ammonium dihydrogen phosphate and ammonium sulfate.
5、Fire extinguishing performance test
The fire extinguishing performance test is carried out under the standard test conditions. Observe the fire extinguishing effect of dry powder fire extinguishing agent, including fire extinguishing speed, fire extinguishing area and reignition situation. High quality dry powder fire extinguishing agent should have faster fire extinguishing speed, larger fire extinguishing area and lower reignition rate.
6、Stability and storage life
Understand the stability and storage life of dry powder extinguishing agents. High-quality dry powder fire extinguishing agent should have good stability and be able to maintain its fire extinguishing performance during storage.
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