Bureau of Standards, Metrology & Inspection, M.O.E.A., R.O.C.

2017-10-21 23:59:11
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News and Public Notices

BSMI Established the Measurement Standard for Calibration of Formaldehyde Measurement and Detection

The Bureau of Standards, Metrology and Inspections (BSMI) announced the establishment of a dynamic formaldehyde concentration standard and new calibration service available for formaldehyde analysis equipment. The new measurement standard is established to safeguard the public health by providing a metrological traceability to assure the accuracy of formaldehyde detection. Since formaldehyde is considered as an important indoor air pollutant and the source of oxidizing agents which is commonly used in the decoration of interior spaces. Long-term exposure to dangerous levels of formaldehyde may cause irritation to the skin, eyes, or respiratory tract, and even carcinogenic effects.

Owing to the significant effects of formaldehyde on health, Taiwan’s "Indoor Air Quality Standards" has defined its permissible exposure limit to be cumulative sampling concentration value below 0.08 ppm per hour. Responding to the regulations, different types of formaldehyde detectors are widely used for exposure evaluation, which also results in the needs of building an accurate measurement standard to achieve metrological traceability. The newly developed measurement standard includes the use of permeation method combined with dynamic blending techniques, which is suitable for highly adsorptive or reactive gas mixtures prepared in low concentrations. It prevents the storage challenges from chemical reaction with gas absorbed in cylinders, such as temperature, vibration, pipeline instability.

In addition, a direct reading formaldehyde gas analyzer calibration system is available and open to provide service for ensuring the measuring accuracy of formaldehyde. The calibration concentration range is between 1 to 10 ppm, with relative uncertainties of 0.0067 ppm. Details are provided on the website at http://www.nml.org.tw.

Agency in charge: Metrology Administration Department (4th Division)
Contact person: Mr. Liou, Bing-Yuan
Telephone: (02)2397-1326


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