If everyone is ready to decorate, then the first thing to consider is whether formaldehyde will appear in excess of the situation. As we all know, many decorating materials are now rich in formaldehyde. So after finishing the decoration, we must not check in immediately. It is best to learn some methods of self testing formaldehyde to check whether the formaldehyde in the room exceeds the standard. Let me share with you a little bit of formaldehyde.
(formaldehyde) self test box
Features: easy and fast operation, low sensitivity and low self limit.
Formaldehyde self-test box is generally composed of brown bottle diluent, transparent bottle developer and a reaction box containing powder.
Before testing, close the door and window of the room to be tested for an hour, pour diluent into the reaction box and fully dissolve the reactant. The reaction box is placed indoors at a height of 80 to 150 cm from the ground. After 30 minutes of exposure, pour in the reagent, tighten the bottle cap and shake it evenly. After standing for 10 minutes, open the color grading card of the self-test box.
Yellow basically does not contain formaldehyde, yellow-green to yellow is not exceeded, yellow-green to green exceeded not serious, green exceeded a little more, blue is exceeded.
Although this method is simple, but the accuracy can not reach 100 percent, can only do a rough test.
The electrochemical analysis method is based on the change of current (voltammetry), electric quantity (coulomb method) and potential (potentiometric method) produced in the chemical reaction to determine the concentration of the analyte in the reaction system for quantitative analysis.
Spectrophotometry is a qualitative and quantitative analysis method based on the selective absorption of electromagnetic radiation by substances with different molecular structures. It is the most common method for the determination of formaldehyde in rooms, textiles and food.
Chromatography has powerful separation efficiency and is not easily disturbed by sample matrix and reagent color. It is sensitive and accurate to detect complex samples. It can be directly used for the analysis and detection of formaldehyde in rooms, textiles and food.
(3) household formaldehyde detector
Sensors for formaldehyde detection include electrochemical sensors, optical sensors and photobiochemical sensors.
Household formaldehyde detector uses Weisheng technology electrochemical formaldehyde sensor, real-time formaldehyde concentration signal in the air is directly converted into electrical signals, through the microcomputer data processing, LCD digital display measurement results.
ZE08-CH2O formaldehyde sensor module
When the formaldehyde detector is placed in the testing environment, or in the same closed space with the coating and other detectors, waiting for 5 to 10 minutes, the value of the formaldehyde detector display screen will show real-time formaldehyde concentration, and constantly changing. The results detected in this way are relatively accurate.
Formaldehyde detection agency
Invite professional formaldehyde testing institutions to do indoor environmental testing this method is suitable for enterprises, units and relatively concerned about environmental protection of the family, etc., the new house decoration to stay before the best entrusted to a professional agency to do indoor environmental testing.
This kind of testing method has the most credible testing effect, but the testing time is longer, the cost is higher, and can not completely guarantee the professional and formal testing institutions.
Of course, in addition to the popularity of several kinds of formaldehyde detection, and we are generally doing the way.
. Plant except formaldehyde, such as Chlorophytum, tiger, orchid, ivy, and green.
_Granular activated carbon formaldehyde removal method, this method is also applicable to decoration without odor family, because some harmful substances are colorless and odorless.
_Opening the window ventilation method, ventilation method is through the flow of air, harmful gas will be discharged outdoors, this is a simple and effective method, the only drawback is that the formaldehyde release cycle is long, generally takes three to fifteen years.
In summary, there are many methods, but the most fundamental method is still the source of formaldehyde, as far as possible to achieve all decoration materials and furniture to buy conformity to specifications, while in conformity with the specifications on the basis of again through the method described above in small series, the effect will be relatively better.