Formaldehyde VOC pre-treatment cabin board formaldehyde detection sample pre-treatment cabin formaldehyde environment cabin

This product is suitable for the determination of formaldehyde release from various indoor decoration materials such as artificial boards, composite wooden floors, carpets, carpet liners, and carpet adhesives, as well as the constant temperature and humidity balance treatment of wood or artificial boards. It can also be used for the detection of volatile harmful gases in other building materials. This product has an environmental chamber function for measuring material VOC, and also has a carrier gas purification function. This product is equipped with a color touch screen display; Display/set the operating time, temperature and humidity, pressure, and flow rate, with PID automatic control, programmable, and screen backlight adjustment for Chinese/English switching. It has the characteristic of convenient operation.

Formaldehyde test specimen pre-treatment test chamber - pre sample processing requirements
The test pieces shall be placed at 23 ± 1 ℃ and a relative humidity of (50 ± 5)% for (15 ± 2) days, with a distance of at least 25mm between the test pieces, allowing air to circulate freely on all surfaces of the test pieces. The indoor air replacement rate shall be at least once per hour at constant temperature and humidity, and the mass concentration of formaldehyde in the indoor air shall not exceed 0.10mg/m3.
6.12 All technical standards of the standard are mandatory for the content of apricot substances in the entire product
6.12.1 Sample pretreatment
Non sample taste limit. Sampling, freezing, grinding, or other harmful substances outside the country, including testing and crushing, except for water with a diameter of 0.85 mm to 1.40mm (20 to 14). Sampling, working, and separation methods are used. The sample size is too small to avoid pre contamination of the stainless steel grinding chamber with gas and chromium, and the sample taste is changed to a water diameter of 1.40mm, with a hard fixed connection working and separation method. To avoid the impact of excessive shrinkage of raw materials on the quality of the product, the method of limiting the harm of isocyanate polycyclic substances is used.
The removal of non harmful sample odor and strip properties in the bottom of the line standard benzene excavation can avoid the pollution of the hard layer in the selection of basic items.
In addition to being obedient and neat, the addition of eye and eye like flavor additives to the chapter will immediately be released.

Test Method for Equilibrium Pretreatment before Formaldehyde Release Testing
1、 Sampling
Samples should be taken from the manufacturer's finished product warehouse or from the circulation field.
2、 Packaging and transportation
The samples should be sealed and packaged to avoid chemical pollution or any physical exposure, such as sunlight, rain, etc.
During transportation, care should be taken to ensure that the sample packaging is not damaged.
3、 Storage of samples before testing begins
Before testing, samples should be kept in their packaging and stored in an indoor environment with a temperature of 23 ℃ and a relative humidity of 45%.
Due to the aging of the sample, storage may affect the formaldehyde release of the product. It is recommended to shorten the storage time of the sample as much as possible.
The above description states that the storage time must be as short as possible before testing. Due to different environments, the same sample has different effects in different environments. Therefore, a multi compartment combination method can be used to process multiple samples at the same time to avoid cross contamination of the samples.

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The material list is as follows:

1. The test cabin is equipped with a dedicated control system, which adopts an imported 10 inch color touch screen. It can continuously and real-time monitor and record control parameters such as temperature, relative humidity, pressure, intake flow rate, time, etc. in each cabin. It can achieve system control, program setting, dynamic data display and historical data playback, fault recording, alarm setting, and other functions;
2. The equipment should be equipped with a safety protection system: high and low voltage protection for the refrigeration system, overcurrent protection, heater overtemperature protection, motor overcurrent protection, water shortage protection, air pump overheating, overcurrent, overvoltage protection, power supply under phase and phase sequence protection, power supply over current and short circuit protection;
3. The equipment should be equipped with an independent air supply box, using an oil-free silent air compressor with a performance no less than Hitachi, equipped with an air purification and water washing device, an air storage tank, and a refrigerated air dryer. The supplied gas humidity should not exceed 30%. rh;
4. Air purification equipment, including but not limited to particle filters, imported modified activated carbon adsorption filters, and membrane filters, with a normal service life of no less than 12 months and equipped with an electronic gas flow meter monitor;
5. Each cabin shall have no less than 2 sampling ports, and each sampling port shall be equipped with corresponding plugs and formaldehyde sampling converters;