In the detection of formaldehyde, there are many different test methods, which for medium-density fiberboard, high density fiberboard, particleboard, OSB, such as formaldehyde emission testing should generally be conducted in accordance with GB / T 17657-1999 the requirements and take perforated extraction testing For plywood, decorative veneer plywood, block board, such as formaldehyde emission test, usually conducted in accordance with the provisions GB/T17657-1999 test method Gaozao control method. 

　　

　　For veneer plywood formaldehyde emission test, the principle see GB / T 17657-1999 in 4.12.1; in terms of reagent preparation, in accordance with the criteria specified in 4.12.3 formulation; solvent aspects formulated in accordance with the above criteria provisions of 4.12.5 preparation.

　　

　　Home improvement category formaldehyde detection, in addition to metal stents, dryer, crystal dish, the other according to GB / T 17657-1999 provisions of 4.12.2. Sample requires four sides with a formaldehyde-free aluminum tape seal, the measured surface area of ??450cm2, sealed in a plastic bag and placed in the incubator temperature (20 ± 1) ℃, at least one day's time.

　　

　　Formaldehyde detection test principle is: the surface area of the sample into 1m2 temperature, relative humidity, air flow rate control, and air is replaced with a predetermined value in the test chamber, when the formaldehyde is released from the sample, is mixed with air inside, regular sampling of the air inside, the air will be drawn through the absorption bottle filled with distilled water, all of formaldehyde in the air and into the water, the determination of the amount of formaldehyde absorption solution and the volume of air drawn, calculated per cubic meter of air formaldehyde content , usually in mg / per cubic meter (mg/m3) was expressed in units. Pumping mentioned herein are cyclical climatic chamber until the concentration of formaldehyde in the air reach a steady state.