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Indoor air testing chooses Lanxin Environmental Testing Technology (Shanghai)****, Lanxin Environmental Testing is a comprehensive testing technology service company specializing in engineering quality testing, indoor air testing, public health testing, water quality testing, wastewater testing and so on. For more details, please call us!
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According to the 18883 standard issued by the Ministry of Health, the indoor formaldehyde concentration standard is milligrams per cubic meter. Obviously qualified, not only qualified, but simply too good, how good is it? The average formaldehyde concentration of the newly renovated room is generally about 7-15 days after professional treatment, and after one or two years of living in the house after decoration pollution control, the general concentration of formaldehyde detection is about one, which is a magic concept, that is, there is almost no formaldehyde in this room, and the test results may be as follows:
1. This is an empty room, there is no decoration and no furniture, and even latex paint has not been painted. 2. If it is a normal house, then the house has been lived in for more than 5 years, and the owner has no bad habits, no smoking, and there are no new textiles in the room. 3. This test is carried out in nature.
4. The test result was artificially manipulated, and the test value was wrong.
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I turned on the detector under ventilation for 5 minutes, and then put it in the room for about 5 to 10 minutes, and the results were all 0:01
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GB 50325-2010 is limited to the following values; Category II.
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I deeply doubt that if it is tested by a testing agency, is this accurate?
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Is it measured by an environmental monitoring station or by another commercial organization? You have to close the windows for a week before the test is accurate.
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After the decoration of the new house, the formaldehyde is detected by an air detector as milligrams per cubic meter, which shows that the formaldehyde concentration is very, very low, and fully meets the standards for occupancy, because the state stipulates that the formaldehyde concentration in public places cannot exceed milligrams per cubic meter, and the formaldehyde in residential buildings cannot exceed milligrams per cubic meter.
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Let's do a self-test.
1. Steps for self-detection of formaldehyde.
1. Close the doors and windows of the room to be tested for 1 hour before testing, and then open the absorption box and put all the brown tube reagents into the absorption box.
2. Close the lid of the absorption box, gently shake the absorption box, and after the contents of the box are completely dissolved, open the lid of the absorption box and place it in the detected space for 30 minutes (80-150 meters from the ground).
3. Pour the white tube reagent completely into the absorption box, close the lid and shake it gently, shake it well, and let it stand for 10 minutes.
4. Compare color with the color card and read out the concentration value of formaldehyde per cubic meter of air in the measured room.
2. Precautions.
1. Minimize the changes in indoor air temperature and humidity during the detection process to ensure the stability of the detection conditions.
2. If the detection reagent accidentally splashes into the eyes, mouth, etc., please clean it with water immediately, and scrub it off in time if it splashes on the desktop stool or utensils.
3. Only half an acre of Kai quantitative testing is not used as the legal testing basis. Store in a cool, dry place out of reach of children. It should be used immediately after opening the package.
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Up to par. China's "Indoor Air Quality Standards" stipulates that the limit value of formaldehyde in indoor air of a class of civil construction projects is. One of the types of civil construction projects includes: residences, hospitals, school classrooms, elderly buildings, kindergartens.
Formaldehyde content is a mild symptom of pollution: susceptibility to colds, weakened immunity, dry throat and sore throat when you wake up in the morning. mg heavily contaminated, symptoms:
Cough, respiratory discomfort, indoor flowers and plants are easy to die, etc. Symptoms of extreme pollution above mg: asthma, etc.?
Susceptible to leukemia, lung cancer, etc.
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Summary. Do not exceed the standard.
The national standard of the People's Republic of China "Hygienic Standards for Formaldehyde in Indoor Air" stipulates that the maximum allowable concentration of formaldehyde in indoor air is milligrams of cubic meters. Therefore, it is not over-standard.
Does the formaldehyde detector show that it exceeds the standard?
The national standard of the People's Republic of China "Hygienic Standards for Formaldehyde in Indoor Air" stipulates that the maximum allowable concentration of formaldehyde in indoor air is milligrams of cubic meters of rubber. Therefore, the disrespectful paragraph is exceeded.
I would like to ask, is it over-the-top.
Oh <> not exceeded
Oh. Thank you.
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Indoor formaldehyde reaches and exceeds the standard, which can cause throat discomfort or pain. At higher concentrations, it can cause nausea and vomiting, coughing, chest tightness, wheezing and even pulmonary edema.
To leave the room immediately and carry out formaldehyde treatment in the room, there are several ways to treat formaldehyde:
1. Ventilation method.
The best thing to do is to ventilate. If the natural ventilation in the room is not good, use a blower to force ventilation.
2. Plant absorption method.
Plants have a strong ability to absorb formaldehyde, such as cactus, spider plant, reed, ivy, iron tree, chrysanthemum, etc. Generally speaking, plants with large leaves and vanilla have a better effect on absorbing formaldehyde, such as spider plant, tiger tail orchid, etc.
3. The folk spread the earthwork royal method.
Place tea leaves, grapefruit peels, onion slices, pineapple chunks, etc. in the freshly renovated room or fumigate the whole room with white vinegar.
4. Activated carbon adsorption method.
Solid activated carbon has the characteristics of many pores, and has a strong adsorption and decomposition effect on formaldehyde and other harmful substances, and the smaller the particles of activated carbon, the better the adsorption effect.
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