APNA–370⁄CU–2 Ambient Ammonium Monitor
APSA–370 Ambient Sulfur Dioxide Monitor
APMA–370 Ambient Carbon Monoxide Monitor
APOA–370 Ambient Ozone Monitor
APSA–365 Ambient Sulfur Dioxide High Sensitivity type
APNA–365 Ambient NOx Monitor High Sensitivity Type
Continuous Particulate Monitor with X–ray Fluorescence PX–375