Full Description

ISO 15337:2009 specifies the gas phase titration (GPT) method for the calibration of ambient air ozone (O₃) analysers. The method is applicable to the calibration of O₃ concentrations in the range 10 g m³ (5 nmol mol¹ mole fraction) to 2 000 g m³ (1 000 nmol mol¹ mole fraction). ISO 15337:2009 uses the reference conditions of 25 C and 101,325 kPa; however, reference temperatures of 0 C and 20 C are also acceptable.