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Certified Product

Ambient air measurement: "APNA 370"

Certificate Holder: HORIBA, Ltd.

Test Mark Number: 0000028755


The APNA 370 is based on the measuring principle of chemiluminescence. This method allows continuous
measurement of the nitrogen oxides (NO, NO2 and NOx (NO + NO2)) within the atmosphere.
The concentration of NO2 is calculated from the concentrations of NO and NOx.

The certified components and ranges are:





0 -   400

0 - 500


0 - 1200



CR = certification range
SR = supplementary range

The measurement system was tested by TÜV Rheinland Energie und Umwelt GmbH
in accordance with the European Standards EN 14211
and is certified according to EN 15267 Part 1 and 2.

Furthermore it is published by the German Umweltbundesamt
(Federal Environment Protection Agency) as being suitability tested.

More information:

Further information by the certificate holder about the certified product: The certificate holder has not provided further information about the certified product.
All certificates of HORIBA, Ltd.:

6 certificates for products

Contact to the certificate holder: HORIBA, Ltd.

2 Miyanohigashi, Kisshoin Kyoto
610-8510 Minami-ku