種是用市面上大量采用的"六合一"、“八合一”之類的甲醛檢測儀進行檢測，其原理和試紙一樣，現場采樣，現場通過儀器讀出數據，打印出簡易報告。這種檢測的比較便宜，但數據精準度不高，只能做個初步判斷。而且，這種檢測方法無法對苯系物、TVOC進行檢測，如果有人說可以檢測，那也是人為設置了虛假的數據。市面上有不少小公司目前都采用得這種方法來檢測室內空氣是否超標。
The first is to use a large number of "six in one", "eight in one" formaldehyde detector on the market for detection. Its principle is the same as that of test paper, sampling on site, reading data on site through the instrument, printing out a simple report. The price of this kind of detection is relatively cheap, but the data accuracy is not high, so we can only make a preliminary judgment. Moreover, this detection method can not detect benzene series and TVOC. If someone says that it can be detected, it is also artificially set up false data. There are many small companies on the market are currently using this method to detect whether the indoor air exceeds the standard.
六合一甲醛檢測儀
Six in one formaldehyde detector
第二種是上門檢測員只負責采樣空氣樣本，然后將采集到的樣本送的實驗室去化驗分析，計算得出數據，2-3個工作日即可出具報告。該種檢測所才用的儀器成本比較高，少則幾十萬，多則上百萬，所以一般非很少有這樣的實驗器材。這類檢測*大的特點就是檢測數據非常準確。一般情況下，客戶檢測都是想要得到一個比較準確的數據，如果檢測方法不科學，導致數據不準確，對客戶來說就是白花錢，也是誤導。
The second is that the door-to-door inspector is only responsible for sampling air samples, and then send the collected samples to a professional laboratory for analysis, and calculate the data, and issue a report within 2-3 working days. The cost of this kind of testing instrument is relatively high, which is hundreds of thousands less and millions more, so there are few such experimental equipment in general unofficial. The main feature of this kind of detection is that the detection data is very accurate. In general, customer detection is to get a more accurate data. If the detection method is not scientific, resulting in inaccurate data, it is a waste of money and misleading for customers.
大氣采樣儀
Atmospheric sampler
第三種是具有CMA檢測資質獨立第三方檢測機構進行檢測，出具CMA檢測報告。該檢測得到的數據跟第二種一樣都是十分精準的，而且出具的報告具有法律效力，可以用來處理房屋購買糾紛或者工程驗。實驗室要具備CMA檢測資質，要求是十分嚴苛的，行業內具備CMA檢測資格的機構也不是很多。該種檢測出具報告的時間相對會比較長，一般要一周以上，而且是三種檢測里更貴的。而且，這種檢測機構一般不對單獨的個人或家庭開放。
The third is the independent third-party testing agency with CMA Testing Qualification to conduct testing and issue cma testing report. The data obtained from the test is as accurate as the second one, and the report issued has legal effect, which can be used to deal with housing purchase disputes or project inspection. The requirements for laboratories to have cma testing qualification are very strict, and there are not many organizations with CMA Testing Qualification in the industry. This kind of test will take a relatively long time to produce a report, generally more than a week, and the price is more expensive among the three tests. Moreover, such testing institutions are generally not open to individual individuals or families.
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