Henan malpractice Construction Engineering Testing Co., Ltd. is a professional testing company, is one of the qualification place in Henan Province since the first detection through examination of business. Business in the Pile qualification qualification, the qualification grade steel, a qualified indoor environment, building energy efficiency testing, subject testing, materials testing, glass curtain wall testing, roads and bridges detection, detection of a number of civil air defense projects testing qualification and testing laboratories. Indoor air pollution is outside the normal component of indoor air, it has added a new component, or components of the original amount of money to increase the indoor environment testing, its quantity, concentration, and lasts longer than the self-purification ability of the indoor air, leaving air quality deterioration phenomenon have an impact on aspects of health and mental state, life, work and other people's. And indoor air pollution-related adverse building syndrome, building related diseases, and allergic disease has caused widespread concern in the domestic and foreign scientists. China's "indoor air quality standards" (GB / T18883-2002), has officially started since March 1, 2003, requiring indoor air should non-toxic, harmless, no abnormal odor, and indoor microclimate index and a total of 19 kinds of toxic and hazardous substances have been limited. Henan malpractice Construction Engineering Testing Co., Ltd. is a professional testing company, is one of the qualification place in Henan Province since the first detection through examination of business. Business in the Pile qualification qualification, the qualification grade steel, a qualified indoor environment, building energy efficiency testing, subject testing, materials testing, glass curtain wall testing, roads and bridges detection, detection of a number of civil air defense projects testing qualification and testing laboratories. Syringe samples. Common 100mL syringe connected to a three-way piston to collect organic vapor samples. First with on-site sampling air extractor 3 to 5 times, and then sampling, sealing air intakes, air intakes syringe down, vertically, make slightly larger than the atmospheric pressure inside the syringe. Also, pay attention to the sample storage time should not be too long, generally the day the analysis is complete. ② plastic samples. Should be chosen with the sample gas pollution component is neither chemical reaction nor adsorption, impermeable plastic bags. Commonly used Teflon bags, polyethylene bags and polyester bags. In order to reduce the adsorption of components, the inner wall lining in silver, aluminum and other metal membrane pocket. Sampling, the first scored with a double ball-site gas washing 2 to 3 times, and then charge the sample gas, pinch inlet, back to the laboratory analysis. ③ tracheal samples taken. Mining endotracheal tube is a glass container having two ends cock, its volume is 100 ~ 500mL. Sampling, the open ends of the cock, the double-ball or suction pump connected to the end of the indoor environment testing service pipes, quickly drawn into a large volume ratio of 6 to 10 times the desire recoverable gas indoor environment testing, so that the gas is recoverable trachea original completely displaced, closed at both ends of the cock, gas volume is taken trachea volume. ④ vacuum bottle sampling. Vacuum bottle is fixed by a pressure-resistant container made of glass, volume 500 ~ 1000mL (see FIG 42). Before sampling, first vacuum means mining evacuated to a residual pressure within the cylinder of about 133kPa can, such as bottle pre-loaded absorbing liquid can be pumped to the bubble appears, close the piston. Sampling, open the cork in the field of indoor environmental testing standards, quarried gas into the bottle, close the cocks, sent to the laboratory analysis. If the vacuum bottle vacuum up to less than 133kPa, in terms of sample size should be based on the residual pressure. Indoor environment testing manufacturers _ malpractice testing services (certification) _ indoor environment testing provided by the Construction Engineering Testing Co., Ltd. Henan malpractice. Henan malpractice Construction Engineering Testing Co., Ltd. (www.hnrsjc.cn) (www.rsgcjc.com) is a leader in Zhengzhou, construction, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, the maximum to meet customer needs. In malpractice detected leadership with the staff warmly welcome all inquiries negotiations to create a better future malpractice detected.