HORIBA offers calibration products which can be used with the AP-370. Available options include: internal or external permeation devices for SO2, H2S, BTX, NO2; external gas phase titration for NO/NO2; and an Ozone generator based on UV radiation. Calibrators can be equipped with thermal mass flow controllers or ambient pressure regulators and capillaries depending on the application requirements. Single component or multi-component calibrators are available upon client's specification.

HORIBA's MCC-1000 digital calibrator can be operated manually, remotely, or automatically. Therefore, analyzers can be easily calibrated whether they are installed in air pollution monitoring stations, in laboratories for quality assurance, or used for the certification of calibration gas.

A touch-screen panel with a simple, user friendly menu is a standard feature. Flow rate, concentration in parts per million, parts per billion, or mass and automatic calibration cycles can be programmed to be available at the push of a button.