Do you know how to test formaldehyde emissions in a 1m ³ climate chamber formaldehyde testing chamber-Chemical Instrument Network

The newly revised GB18580-2017 "Formaldehyde Release from Indoor Decoration Materials, Artificial Boards and Their Products" will be implemented this year, which means that the 1m3 climate chamber method will become the * method for furniture and flooring manufacturers to detect formaldehyde release.

1m ³ climate chamber formaldehyde testing chamberTest method:

*According to GB18580-2017, indoor decoration materials - Determination of formaldehyde emissions from artificial boards and their products (one cubic meter climate chamber method). Formaldehyde is released from the sample and mixed with the air inside the box. The air inside the box is periodically extracted and passed through an absorption bottle containing distilled water. All formaldehyde in the air is dissolved in the water; Measure the amount of formaldehyde in the absorption solution and the volume of extracted air, calculate the amount of formaldehyde per cubic meter of air, expressed in mg/m3. Extraction is periodic until the formaldehyde concentration in the air inside the climate chamber reaches a stable state.

Secondly, the dimensions of the specimen are length=(500 ± 5) mm and width b=(500 ± 5) mm. There are two specimens with a surface area of 1m2. When the length and width of the specimens are smaller than the required dimensions, it is allowed to use a method that does not affect the measurement results to assemble them.

model			SY11-N02	SY11-N1
Nominal internal volume (liters)			225(1±2%)	1000(1±2%)
internal dimensions （mm）		W	550	850
		D	600	1080
		H	680	1100
external dimensions （mm）		W	1100	1460
		D	796	1285
		H	1520	1572
sex can	temperature range		15～30 ℃
	humidity range		35～70 % RH
	temperature deviation		≤ ±0.5 ℃
	Humidity deviation		≤ ± 2% RH
	Temperature Uniformity		≤±0.8 ℃
	Humidity uniformity		≤ ±2 % RH
	temperature fluctuation		≤ ±0.5℃
	Humidity fluctuation		≤ ± 2% RH
	Ventilation rate		0-1.5Times/hour
	sealing performance		The air leakage rate inside the cabin is less than 5%. If the gas supply rate or pressure exceeds 1kpa, the gas leakage rate is less than 0.5% of the cabin capacity per minute
	Central wind speed		0.1-1.0m/s(Continuously adjustable)
	Relative positive pressure		10±5pa
	spike recovery rate		＞80%
	Background value		Formaldehyde: ≤ 0.006mg/m³
Temperature control method			Indirect temperature control method for water circulation
Humidity control method			Dual directional adjustment method for dry gas and moisture ratio
material	shell		Q23Cold rolled steel plate 1.5mm, surface electrostatic spraying, white
	inner box		SUS304Mirror stainless steel 1.5mm (8k mirror)
	adiabatic		High density polyurethane foam+XPS
	seal		Silicone (food grade), polytetrafluoroethylene
Operation control	monitor		7Inch color touch screen, resolution 800x480, remote control (optional)
	Automatically record projects		Temperature, humidity, pressure (optional), flow rate (optional), operating time, fault record
	Control method		Temperature control: proportional, integral, derivative (P.I.D); System control: PLC+HMI
	resolution		Temperature: 0.1 ℃; Humidity: 0.1% RH
	communication interface		1One USB-A, one USB-B, one RS232, one RS485, and one RJ-45 (optional)
	Rough storage and recording function		Memory, USB flash drive, SD card
Supplement water quality and cycle			Distilled water; >30 days (continuous operation)
power supply			AC380(1 ± 10%) V (50 ± 0.5) Hz three-phase four wire+protective grounding
Installed capacity (Kw)			2.5	3.0
Weight (Kg)			280	320
Noise (dB)			≤ 60dB
System protection			High and low pressure protection, overcurrent protection of refrigeration system; Overtemperature protection; Motor overcurrent protection; Water shortage protection; Power supply under phase, phase sequence protection, etc.