The Formaldehyde Emission Test Chamber is used to evaluate formaldehyde emissions from wood-based panels, furniture, flooring, and decorative materials. It provides accurate testing under controlled temperature, humidity, and airflow conditions, complying with ASTM E1333, ASTM D6007, EN 717-1, and ISO 12460-1 standards.

Formaldehyde Emission Test Chamber

Model:TD18580-2

I. Product Overview

This equipment is mainly used for the determination of free formaldehyde emissions from consumer products such as wood products, furniture, flooring, carpets, footwear products, and building decoration materials.

Specimens with a known surface area are placed into a test chamber where the temperature, humidity, air flow rate, and air exchange rate are controlled at specified levels. Formaldehyde is released from the specimens and mixed with the air inside the chamber. Air samples are periodically extracted from the chamber and passed through a gas washing bottle containing water, where the released formaldehyde is absorbed and its concentration in the water is measured.

The formaldehyde concentration in the chamber air is calculated based on the formaldehyde concentration absorbed in the washing solution and the volume of extracted air. The result is expressed in milligrams per cubic meter (mg/m³). Sampling is performed periodically until the formaldehyde concentration inside the test chamber reaches an equilibrium state.

II. Reference Standards

ASTM E1333-96 — Standard Test Method for Determining Formaldehyde Concentrations in Air and Emission Rates from Wood Products Using a Large Chamber

ASTM D6007-02 — Standard Test Method for Determining Formaldehyde Concentrations in Air from Wood Products Using a Small-Scale Chamber

EN 717-1 — Wood-based panels — Determination of formaldehyde release — Part 1: Formaldehyde emission by the chamber method

GB/T 17657-2013 — Test Methods of Evaluating the Properties of Wood-Based Panels and Surface Decorated Wood-Based Panels

GB 18587-2001 — Indoor Decorating and Refurbishing Materials — Limit of Harmful Substances of Carpets, Carpet Cushions and Carpet Adhesives

LY/T 1980-2011 — 1 m³ Climate Chamber for Formaldehyde Emission Testing

GB 18580-2017 — Indoor Decorating and Refurbishing Materials — Limit of Formaldehyde Emission from Wood-Based Panels and Finished Products

ISO 12460-1:2007 — Wood-based panels — Determination of formaldehyde release — Part 1: Formaldehyde emission by the 1 m³ chamber method

LY/T 1612-2004 — 1 m³ Climate Chamber for Formaldehyde Emission Testing

III. Performance Features

1. Advanced Heat Exchanger Technology: High heat exchange efficiency with a small temperature gradient.

2. Hot and Cold Water Temperature Control System: Provides stable and precise temperature control.

3. Imported Temperature and Humidity Sensor: High sensor accuracy and stable performance.

4. High-Quality Refrigeration System: Equipped with an imported refrigeration unit, ensuring stable operation and long service life.

5. Safety Protection Devices:

The climate chamber and dew point water tank are equipped with high/low temperature alarm protection and high/low water level alarms.

6. Comprehensive Protection Measures:

The compressor is equipped with overheating, overcurrent, and overpressure protection functions, ensuring safe and reliable operation of the entire system.

7. Stainless Steel Inner Chamber:

The inner chamber of the constant temperature chamber is made of stainless steel. Its smooth surface prevents condensation and formaldehyde adsorption, ensuring accurate test results.

8. Excellent Thermal Insulation and Sealing Performance:

The constant temperature chamber adopts rigid foaming insulation materials, and the chamber door is equipped with a silicone rubber sealing strip, providing excellent thermal insulation and airtightness. A forced air circulation system (forming a circulating airflow) is installed inside the chamber to ensure uniform temperature and humidity distribution throughout the chamber.

IV. Technical Parameters

1. Operating Ambient Temperature: 15℃～30℃; Operating Ambient Humidity: ≤90%RH

2. Adjustable Temperature Range: 10℃～40℃; Temperature Control Accuracy: ±0.1℃; Fluctuation Rate: ≤±0.5℃; Uniformity: ≤±0.5℃

3. Adjustable Humidity Range: 30%～80%; Humidity Control Accuracy: ±2%RH; Fluctuation Rate: ≤±3%RH; Uniformity: ≤±5%RH

4. Air exchange rate: 1 m³/h ± 5% Pressure: 10 kPa ± 5%

5. Air velocity: 0.1 m/s ~ 0.3 m/s (continuously adjustable), accuracy ≤ 0.05 m/s

6. Air tightness: The hatch is self-sealing. Sealing performance meets the following requirements:

① At 10 kPa positive pressure (gauge pressure), the air leakage rate inside the chamber is less than 10⁻³ * 1 m³/min;

② The difference in gas flow rate between the inlet and outlet is less than 1%.

7. Inner casing material: Seamlessly welded 304 mirror-finish stainless steel plate. Welded areas and surrounding surfaces are polished and free from deformation. The inner wall is smooth and evenly colored, without exposed substrate, delamination, blistering, or scratches.

8. Outer casing material: A3 color-coated steel plate with electrostatic spraying. The coating is smooth and evenly colored, without exposed substrate, delamination, blistering, blemishes, or deep scratches. The compartment and doors are effectively thermally insulated using a double-layer sandwich insulation system of polyurethane and mineral wool. The insulation layer thickness is not less than 50mm, and the thermal conductivity is not greater than 0.01W/(m·K). Seamless welding is used at the joints between the inner wall panels.

9. Air Exchange Device: A device capable of continuously controlling the air exchange rate (dry air flow meter, or other electronic air flow metering device) is installed inside the chamber. The air inlet and outlet should be on different inner walls at different heights to ensure that the airflow supplied to the chamber meets the relevant standard requirements.

10. Air Circulation (Mixing) Device: A fan is installed inside the chamber to enhance air mixing; the air velocity near the specimen surface is between 0.1 m/s and 0.3 m/s (adjustable).

11. Power Supply: 220V 50Hz