The test standard specifies the gas analysis method The principle is as follows: >
Put the test parts of a known surface area in temperature, humidity, airflow and pressure in the closed detection room of the given value. The formaldehyde released from the test piece is mixed with the air in the test room. The gas is continuously extracted from the test room and was washed by the gas bottle. The bottle is used to absorb distilled water. At the end of the test, the formaldehyde concentration is measured with optical meter. Calculate the amount of formaldehyde release with the measured concentration, sampling time, and the exposure area of the test parts, and is represented by mg/(m² ▪ H).
Sampling of formaldehyde release: >
Use aluminum tape without formaldehyde to seal the side of the test parts , or brushing 3 layer of polyamine cordic acid ethyl paint for the edge.Close
Formaldehyde test box , > Preheat (60 ± 0.5) ° C.Add 20ml ~ 30ml distilled water per bottle
, string 2 washing bottles together, connect 2 bottles to the magnetic valve with a hose to exit. Note: The amount of distillation water depends on the air pressure on the test box 1kPa ~ 1.2 kPa.
The test parts to the preheated test box,
Turn off the test box and start the test. Heating to (60 ± 0.5) ° C , The relative humidity does not exceed 3%, so that the test parts are always exposed to effectively release formaldehyde. Open the air pump immediately to enter the detection room, and use the needle valve and the air flow meter meter meter to control the air flow to (60 ± 3) L/H , The air passes-the magnetic valve flowing person composition pair pair pair Line washing bottle. From the beginning of the test until the end of the 4h, the formaldehyde should be measured for interval every hour. Every time 1h, a new series of tandem bottle is automatically connected. Throughout the test stage, the air pressure in the test box is monitored by the pressure regulator. The entire test process should be maintained by 1 KPA ~ 1.2 KPA pressure.
Pour the absorption fluid of each washing bottle into a capacity bottle of 250ml,
and fully rinse the washing bottle and the connected hose , Pour the capacity bottle with the flushing solution , and then add the steamFrequent water to the scaled marking line. Note: After adding distilled water, the solution must not exceed 250ml.
1. Product use:
> Formaldehyde test box
It is suitable for the determination of various artificial board, composite wooden floor, and carpet, carpet pads and carpet adhesives, etc. Balanced treatment can also be tested with volatile harmful gases in other building materials. This formaldehyde test box is characterized by a large -limit simulation indoor climate environment. The test results are closer to the real environment, so it is real and reliable. > 2. The execution criteria of this product:
GB18580-2017 The Formaldehyde Release of its products >GB18584-2001 Limited Harm in Wood Furniture
GB18587-2001 Interior Decoration Materials Materials Release limited edition of carpet, carpet pads and carpet adhesives harmful substances
GB17657-1999 Experimental Method of the Physical and Chemical Performance Performance Performance Performance Performance Performance Performance
GB50325-2006 Regulations on the Control of indoor environmental pollution control of civil construction engineering
ENV717-1 The Measurement of the Formaldehyde Release Quantity of the Formaldehyde of the Plate
ASTM D6007-02 Standard Test Method for Released Formaldehyde Concentrations in Gas in Gas
LY/T1612-2004 Climate box device
< style=font-size: 18px;> 3. Product parameters: >