Formaldehyde & VOCs Test

Johnson Group – Government-Accredited Indoor Air Quality Consultant

Johnson Group’s Allergy & Allergen Testing Service has been recognized by Hong Kong Environmental Protection Department Indoor Air Quality Information Centre and titled in its lists of “Indoor Air Quality Contractors“, “Indoor Air Quality Control Suppliers” and “Indoor Air Quality Consultants” across three categories.

Aims

This test aims to determine the level of HCHO (formaldehyde) and TVOC (Total Volatile Organic Compound) in indoor air and furnishings. After the service, you will receive a test report and our recommendations (related services and products) based on the results.

Formaldehyde & VOC

Formaldehyde (HCHO) is dangerous to human health. Building materials, home furnishings pressed woods, wood floor finishes, paints, upholstery fabrics are often the major sources in homes because materials off-gas formaldehyde over time.

World Health Organization defined volatile organic compound (VOC) as any organic compound whose boiling point is in the range from 50 °C to 250 °C. VOC can be found within nature environment, furnishings, building materials, glues and carpets. Formaldehyde, acetaldehyde and benzene are examples of VOC.

Where should I test?

Samplings will be carried out in each room / indoor area at your home.

Testing device(s)

We adopt RAE® VOC Monitor and RAE® CH2O Monitor to perform the TVOC and formaldehyde tests.

Safety level

HK Environmental Protection Department & Finnish Society of Indoor Air Quality and Climate set the TVOC at 200 & 600 μg/m3 or 0.087 ppm & 0.261 ppm as Excellent Class and Good Class respectively.

WHO (2000), Guidelines for Air Quality suggests that the level should below < 100 µg/m3 to avoid acute effects in such individuals.

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