Formaldehyde  is widely used in industry to manufacture building materials and numerous household products. It is also a by-product of combustion and certain other natural processes. At room temperature, formaldehyde is a colorless, flammable gas that has a distinct, pungent smell. It is also known as methanal, methylene oxide, oxymethyline, methylaldehyde, and oxomethane.
Sources of formaldehyde in the home include building materials, smoking, household products, and the use of un-vented, fuel-burning appliances such as gas stoves.
There are a number of dangers associated with exposure to Formaldehyde, which is classed with chemicals such as Arsenic and Cyanide
Conforms to the standards ASTM1333-2002 EN-717-1 ASTM D6007—02 ENV717-1
Specifications   
Capacity of test chamber 1 cubic meters
Temperature Range: 10 to 80  degree Celsius
Adjustable precision: ±0.5  degree Celsius
Humidity range 40-80% R.H
Adjustable precision: +2% -3% R.H
Measurement precision:±1% R.H
Maintain at least 1 Pa pressure inside of test chamber and monitor by the pressure meter long term.
Dimension of test chamber: 1000*1000*1000mm
Dimension of external: 1650*1450*2030mm