What is the indoor formaldehyde testing standard?

Generally speaking, the maximum concentration of formaldehyde in indoor air can not exceed milligrams per cubic meter, and the flooring used for decoration is usually divided into class A and class B, the concentration of formaldehyde in class A composite flooring cannot exceed milligrams per 100 grams, and class B products need to be controlled at 9-40 milligrams per 100 grams.

The formaldehyde content in the indoor air is mg m3 before it can be moved in normally, and if it exceeds this standard, even if it is only lightly polluted, it is not allowed to live. Don't take chances, there are many cases of harm caused by indoor air pollution, and you should never gamble with the life and health of yourself and your family. There are also many ways to remove formaldehyde in daily life, so let's learn about it together

1. Wise Stone.

It has regular honeycomb voids inside, its specific area is huge, can efficiently adsorb formaldehyde, its adsorption capacity is strong, can reach more than 20 times of the traditional activated carbon, not only the adsorption capacity is large, but also has the function of ion exchange, can decompose formaldehyde and other harmful substances into harmless carbon dioxide and water, without replacement can be used for a long time. When choosing, it is important to note that it is a gray ore with an irregular shape and is not a round particle.

2. Activated carbon.

Using activated charcoal is also a great option. The surface of activated carbon is rich in pores, which can adsorb indoor odors, and also has a certain effect on pollution control, but the activated carbon treatment capacity is limited, and it will produce saturation after about half a month of use, and it is impossible to continue to work.

3. Open windows for ventilation.

Opening doors and windows to allow air to circulate naturally, and venting harmful gases to the outside through air streams, is simple and effective. Try to keep the windows open for ventilation indoors for a long time, and you can also use electric fans to assist in accelerating indoor and outdoor air convection flow, forced ventilation for a month, and the decoration taste will be greatly reduced. It is best to place the newly purchased furniture at the ventilated outlet, so that the odor is directly excluded outside.

4. Formaldehyde remover.

Under certain conditions, formaldehyde scavengers react chemically with formaldehyde to produce other substances that are not harmful to health, so as to reduce the concentration of formaldehyde in the room. But it's also a chemical in its own right, and if used incorrectly, it can be another source of pollution indoors.

Fifth, high temperature.

We all know that formaldehyde is volatile at high temperature, and we can use some heating equipment to increase the temperature at home a lot, so that a large amount of formaldehyde gas can be volatilized, and then formaldehyde can be removed by opening windows for ventilation. Repeated operation a few times, you can remove most of the formaldehyde in the home, but we must pay attention to safety when using heating equipment to avoid fire.

The three stinkers have competed against Zhuge Liang, and the formaldehyde is the same, and it is recommended to combine several methods to stabilize formaldehyde in a safe range faster.

There are national standards for indoor air pollution testing, and Lister Petter testing experts pointed out that the national standards stipulate that formaldehyde should not exceed milligrams per cubic meter in the room. For example, when people buy furniture at home, when they open the cabinet door, there is often a pungent smell on their faces, which is actually formaldehyde. Formaldehyde emissions in MDF can take up to three to five years, or even fifteen years.

The national standard for benzene is less than milligrams per cubic meter in the atmosphere of residential areas. China has also formulated a national standard for radon content, the standard for new houses is less than 100bq cubic meters, and the standard for old houses is less than 200bq cubic meters.

There are actually two formaldehyde standards: 1. "Indoor Air Quality Standard", closed for 12 hours, formaldehyde milligrams cubic meters; It is the most commonly used standard in life, namely the GB T18883 2002 standard, which is applicable to all types of residential and office buildings. 2. "Indoor Environmental Pollution Control Standard for Civil Construction Projects", that is, GB50325-2020 standard.

Closed for 1 hour, a class of civil buildings, formaldehyde mg cubic meters; It is a mandatory acceptance criterion for delivery!

Answer: Hello dear, the relevant laws and regulations in China stipulate that the maximum concentration of indoor formaldehyde is allowed, so when the indoor formaldehyde concentration exceeds the standard, it is an excessive situation, which is abnormal. Have a great day!

Question: My house has been detected that some houses are 0, some houses are some houses, these days I feel that my forehead is old and woody, and I feel good when the wind blows for a while, is it affected by formaldehyde?

Answer hello dear, detect and that belongs to the formaldehyde exceeded, then you are uncomfortable, the wind will be good, it must be because of formaldehyde, open more windows for ventilation, and then buy some formaldehyde flowers, pothos and the like, and then buy some formaldehyde bamboo charcoal, pineapple peel is useful in the house, I wish you a happy life!

Q: Does this condition have a serious impact on the body?

Hello dear, the harm of formaldehyde to the body: formaldehyde poisoning can cause damage to the nervous system and immune system, and severe patients may even have coma, circulatory failure, respiratory failure, increased intracranial pressure and other crises, and even life-threatening.

2. Impact on pregnant and infants: long-term contact will cause menstrual disorders and pregnancy syndrome in women; It can cause a decrease in the physique of newborns, and can also induce fetal malformations and infantile leukemia. Have a great day!

Hello dear, if there are other houses, try not to live in this first, health is the most important, I wish you a happy life!

The standards jointly promulgated by the Ministry of Health and the State Environmental Protection Administration are mainly applicable to residential and office spaces, in which the implementation standard for detecting formaldehyde is 12 hours in a closed condition, and the standard value is milligrams per cubic meter.

The specifications promulgated by the Ministry of Construction are mainly applicable to the engineering acceptance and pollution control of residential and other civil buildings, among which the implementation standard for detecting formaldehyde is 1 hour under closed conditions, and the standard value is milligrams per cubic meter.

At present, these two standards can be applied at the same time for housing, and neither has been abolished. In general home decoration testing, the first one is more commonly used.

The formaldehyde content of the national standard is not higher than, mg Mild pollution symptoms: susceptibility to colds, weakened immunity, dry throat when waking up in the morning.

The national standard is below.

Step 1: Open the windows for ventilation. The decoration has just ended, the smell of the new house is serious, and the pollution must be several times, or even dozens of times the standard, so the initial one to two weeks, what means do not play a big role, the best way is to open the window for a long time to ventilate, through air convection, the pollutants in the indoor air are discharged to the outside.

It can also be assisted by an electric fan to accelerate the convection of indoor and outdoor air.

Step 2: Use nano live ore for air purification. After effective ventilation, indoor air pollution has been greatly reduced, so the focus should be shifted to solving the source of indoor pollutant release, so as to ensure continuous purification of harmful gases.

Step 3: Adopt the plant decontamination method. Indoor suitable planting of flower plants are: spider plant (including orchid grass), cactus (cactus family), aloe vera, etc., such plants have a certain purifying effect.

There are two standards for indoor formaldehyde concentration in China:One isGB T18883-2002 standardOne isGB50325-2020 standard,The 18883 standard is less than or equal to air, while the GB50325 standard is less than or equal to air, of which the 18883 standard is more suitable for home improvement environment.

In the above two criteria,GB T18883 standard, aimed at "the formaldehyde concentration in the air in various indoor environments that have been put into use", that is, the formaldehyde concentration standard of indoor air in various indoor places, including residential buildings, business premises, and office environments, and the home improvement environment are also listed. It regulates the formaldehyde concentration per 1 cubic meter of air in the indoor environmentNot more than milligrams.

The 50325 standard is formulated for "civil construction projects", that is, the formaldehyde concentration standard that the indoor environment should meet when the developer delivers the house after the completion of the building. A class of civil buildings,That is, civil construction projects such as residences, hospitals, elderly buildings, kindergartens, school classrooms, etc., formaldehydeMust not exceedClass II civil buildings, that is, office buildings, shops, hotels, cultural and entertainment venues, bookstores, libraries, exhibition halls, gymnasiums and other places, formaldehyde concentrationMust not exceed

Helped you, the answer is as follows, for reference.

The indoor air quality standard is formulated by the Ministry of Health, and the testing requirements are closed for 12 hours, and the indoor formaldehyde concentration is not higher. This standard refers to the World Health Organization's limit standard for indoor formaldehyde concentration, which is the minimum standard for human settlements and health. The Code for the Control of Indoor Environmental Pollution in Civil Construction Projects is formulated by the Ministry of Construction, which requires that it be closed for 1 hour and the indoor formaldehyde concentration is not higher than that, which is applicable to the mandatory control of environmental pollutants before the delivery of construction projects.

1. 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 for first-class buildings and milligrams of cubic meters for second-class buildings.

2. The national standard of the People's Republic of China "Solid Wood Composite Flooring" stipulates that the formaldehyde emission of Class A solid wood composite flooring is less than or equal to 9 mg 100 grams;The formaldehyde emission of class B parquet is equal to 9 mg - 40 mg 100 grams.

3. The "Technical Requirements for National Environmental Labeling Products - Artificial Wood Panels" stipulates that the formaldehyde emission in man-made panels should be less than milligrams of cubic metersThe amount of formaldehyde released in wood flooring should be less than milligrams of cubic meters.

The general household indoor standard is GB1888-2002 standard, milligrams per cubic meter.