How to self test whether formaldehyde exceeds the standard?

1. Buy a formaldehyde detection box, collect air detection in the indoor environment according to the instructions, compare the test data with the manual, and the formaldehyde data range can be obtained in about 30 minutes. However, this self-test method is easily affected by the temperature and humidity of the external environment, which makes the obtained data biased.

2. The instrument for measuring formaldehyde needs to open the house for ventilation for half an hour, and then close the doors and windows. There can be no extra people in the room, and it is probably controlled to about 2 or 3 people. After calibration, turn it on, and after a certain period of time, we will take a look at the data on it, if it does not match the qualified data, an alarm will sound.

3. Through the testing of professional institutions, the environmental protection testing of professional institutions takes the national indoor air quality standards as the standard, and uses professional indoor air quality testing equipment to sample the indoor air, and then sends it to the laboratory for inspection and analysis, and the results are authoritative. However, it is more expensive to hire a professional company.

First of all, I think we can roughly estimate according to our own sensory reactions, if the formaldehyde exceeds the standard, in addition to a strong pungent smell, the body will also produce a lot of discomfort, but this method cannot accurately judge the degree of formaldehyde exceedance.

In addition, if there are animals and plants at home, you can also judge whether formaldehyde exceeds the standard according to their reactions, of course, this can only be roughly estimated.

At present, the most common method is to detect the concentration of indoor formaldehyde through the formaldehyde detection box, which is not only simple and effective, but also the detection results are more accurate. If you are still not at ease, you can also ask a special indoor environmental protection company to come to the door for testing.

Specifically, the following 5 methods can detect whether formaldehyde exceeds the standard:

1. Use a formaldehyde detector Formal qualified formaldehyde detector is very expensive, and it is not cost-effective to decorate a house and buy it for testing. At this time, you can hire a professional testing company, and there is also a professional management company, which is also more expensive, and you can choose according to your actual economic situation.

2. Smell indoor formaldehyde is smelly, the concentration reaches a certain level, it can be smelled, if you can clearly smell the smell of indoor decoration, it means that formaldehyde is exceeded, which is a serious exceedance.

3. Observe the growth of plants After the decoration of the new house, I believe that many friends will prepare a lot of plants to remove formaldehyde, such as spider plant, pothos, tiger pill orchid and so on. This is when we can observe the growth of these plants. If there is a large area of wilting, yellowing or sickness, etc., it means that the indoor formaldehyde has exceeded the standard.

4. Chemical detection is relatively simple to use a portable formaldehyde self-test box, which is still a reference in measurement. With this simple method, the results will be biased greatly, so it is best to prepare more checkboxes and find the average.

5. Human reaction After moving into the new house, if the human body has obvious sensations in a short period of time, such as harsh eyes, cough, etc., we should consider excessive formaldehyde.

Share several formaldehyde detection methods to see which one you need to choose:

1. The accuracy of the formaldehyde self-test box is average, and it can only be qualitative but not quantitative.

Formaldehyde self-test box is the lowest cost, the most family-oriented, but the numerical deviation of the formaldehyde detection method. Generally, formaldehyde self-test boxes can be bought in home supermarkets or online, ranging from more than a dozen to dozens of dollars.

Before the test, the room should be sealed for 12 hours, and the reagent should be put in the room to be tested after the reagent is prepared, and the color of the reagent should be compared with the color card after the specified time is up. The basis is that formaldehyde reacts with reagents after dissolving in water to form blue-green compounds, and the concentration of formaldehyde is judged by the shade of blue-green.

The advantage is that it is cheap, which can intuitively reflect the concentration of formaldehyde, and the disadvantage is that the value is not accurate, it is easy to be affected by temperature and humidity, and the larger the space, the more inaccurate the value. The longer the self-test box is placed, the darker the color of the detection reagent will be, so the detection results of the formaldehyde self-test box are not 100% accurate.

2. Self-perception method.

When you first move into a new house, if the children and pregnant women in the family will feel uncomfortable, such as dizziness and chest tightness; Or the plants in the home are difficult to survive for a long time, and a large amount of wilting occurs, which means that there are certain formaldehyde molecules in the new house.

3. Professional formaldehyde institutions.

The relatively worry-free and labor-saving method is to find a CMA testing institution, a formaldehyde testing agency with CMA qualification to come to the door for sampling and analysis, close the doors and windows for 12 hours before sampling, and the testing personnel will come to collect air samples, at least 45 minutes of sampling, and return to the laboratory for liquid chromatography analysis after sampling, and finally calculate the experimental results and issue a CMA test report.

You can use an electronic formaldehyde detector or a formaldehyde detection box to test whether the formaldehyde exceeds the standard.

It is recommended that you use a formaldehyde detection box. Because the formaldehyde detection box can not only detect whether the formaldehyde in the room exceeds the standard, but also detect the formaldehyde concentration in the furniture, find out the source of indoor pollution, and also provide a basis for removing formaldehyde.

In addition, the formaldehyde detection box is cheap, the cost of use is low, and the initial detection is more cost-effective.

Because formaldehyde is greatly affected by temperature, it is recommended to regularly track and monitor for a period of time to understand the changes in formaldehyde in your home in different seasons, so that you can know the formaldehyde pollution in your new house.

As we all know, formaldehyde is very harmful to our human health, so the new house cannot be moved in immediately after decoration, and it needs to be vacant for a period of time. There are also many people who will test the formaldehyde content of the house after renovation to see if there is a serious exceedance. So, how to test whether formaldehyde exceeds the standard?

What are the ways to remove formaldehyde? Let's find out together.

For example, Qiaoling how to measure whether formaldehyde exceeds the standard.

There are many ways to test formaldehyde, such as plant detection method, you can buy some green plants and place them indoors, and after 2 to 3 days, if you find that these green plants are dying, then it means that the formaldehyde content exceeds the standard. You can also use a formaldehyde detector to detect whether the indoor formaldehyde exceeds the standard, and this instrument can measure the formaldehyde content according to the indoor odor.

Formaldehyde removal method.

1. Plant formaldehyde removal is a commonly used method, but this only has an effect on pollution sources below three national standards, and if it is exceeded, it will have no effect. In addition, if you choose plants to remove formaldehyde, you also need to pay attention to the area of the house, usually speaking, a room with an area of 10 square meters needs to be placed with two larger plants.

2. The most frequently used is to use activated carbon to remove indoor formaldehyde, as we all know that activated carbon has very strong adsorption, and it is an internationally recognized drug expert. Placing the activated carbon bag in the newly renovated house can not only remove formaldehyde, but also stink, and have no effect on human health. However, if the formaldehyde content is relatively high, it is necessary to remove formaldehyde together with physical **.

3. Formaldehyde removal can also be done by ventilation, which can effectively reduce the indoor formaldehyde content. Many people in Zhenyuan will reduce the frequency of ventilation due to the cold winter, which not only does not achieve the effect of removing formaldehyde, but also increases the content of harmful substances. Therefore, it is important to maintain indoor ventilation regardless of the season.

Article summary: The above is all about how to test whether formaldehyde exceeds the standard and what methods are available to remove formaldehyde, I hope it will be helpful to you. If you want to know more about it, please stay tuned to Qeeka Home.

Indoor air testingOur country only recognizes the atmospheric sampling method, don't be deceived by the direct reading instrument or the six-in-one sampling instrument. Formal indoor air testing is to close the doors and windows and then use an atmospheric sampler to sample and collect air samples, and the samples are taken to the CMA laboratory for laboratory analysis in a standard environment. The results of the test will be issued with a CMA test report, and those that cannot issue a CMA test report are false (CMA institutions are not allowed to issue reports other than CMA format, that is, all data reports are illegal and untrustworthy).

When a new house is moved in or just renovated, it is necessary to test five conventional items: formaldehyde, benzene, toluene, xylene, and TVOC. Regarding these five test contents, our country has two testing standards:

One is "GB50325-2020", which is a mandatory national standard, which is generally used for tooling inspection....

You can use the formaldehyde detector, portable formaldehyde self-test box, and the growth status of plants to determine whether formaldehyde exceeds the standard. It is recommended to use a formaldehyde detector or a formaldehyde self-test box of Renshan Bureau to detect the excess of formaldehyde, which is the most effective and direct way to detect whether formaldehyde exceeds the standard.

Buy some activated carbon and place it in all corners of the room, activated carbon can effectively adsorb formaldehyde and play a role in purifying the air.

To maximize the opening of doors and windows for ventilation, the accelerated circulation of indoor air can dilute the concentration of harmful substances in the air and reduce the absorption of harmful substances by the human body.

Plants can be used to adsorb formaldehyde and air fresheners to purify indoor air, but medium to high concentrations of formaldehyde should still be removed by professionals.