Does it mean that the longer the door and window are closed, the better? For example, closing for 48 hours is actually unscientific. Formaldehyde release is a slow process with cumulative effect. The longer the time of closing, the higher the formaldehyde content in the air will be, and the detected data will have no reference significance.

目前市面上也存在一些不规范的不良公司，采用的是GB/T18883标准来做检测，但是让客户关闭门窗24小时、甚48小时，那么测出来的数据超标的概率肯定大大升高了。这种是错误的做法，目的肯定是为了让消费者做除甲醛，从而赚取更多利润。

At present, there are some non-standard and bad companies in the market. They use the GB / T18883 standard for testing. However, if the customers close the doors and windows for 24 hours or even 48 hours, the probability of exceeding the standard of the measured data will be greatly increased. This is a wrong practice, the purpose is definitely to let consumers do formaldehyde removal, so as to make more profits.

对于关闭门窗检测的规定，在2001年和2002年就有相关规定和标准出台，他们分别是GB50325---2001《民用建筑工程室内环境污染控制规范》和GB/T18883---2002《室内空气质量标准》。在这两份标准中，前者规定关闭门窗时间为1小时，后者则为12小时。

In 2001 and 2002, the relevant national regulations and standards have been issued for the detection of closed doors and windows. They are GB 50325-2001 code for indoor environmental pollution control of civil building engineering and GB / t18883-2002 national indoor air quality standard. In the two standards, the former stipulates that the time for closing doors and windows is 1 hour, while the latter is 12 hours.

福州除甲醛公司检测技术建议：关闭门窗的时间不能太短，还是控制在12个小时左右，但是也不能太长，应不超过18个小时，否则测出来的数据再来用GB/T18883标准来对比，也失去了意义。

Fuzhou in addition to formaldehyde company testing technology recommendations: the time to close doors and windows should not be too short, or controlled at about 12 hours, but also not too long, should not exceed 18 hours, otherwise the measured data again with the GB / T18883 standard to compare, also lost the significance.

选购甲醛检测需选择正规的公司，从而确保产品的质量。如果你还有什么不清楚的，可以关注美家

Choose formal company to choose formaldehyde detection, so as to ensure the quality of products. If you have anything else you don't know, you can pay attention to Meijia environmental protection