Н₂ Range of hydrogen concentration from 0.1 ppm to 100%
      1. VG-2 for geophysics (0.1-50 ppm).
      2. VT-2 devise for leak detection (1-100 ppm).
      3. VG-3"A" (0.1-50 ppm), VG-3"Б" (1-100 ppm), VG-3"В" (0.01-1%) devises for twenty-four-hour monitoring.
      4. GIN-2 for medical diagnostic (1-100 ppm).
      5. Multipoint Low-power indicator of highly explosive situation (0.2-1.5%).
      6. Fast-response indicator of high concentration (1-100%).
      7. Low-power indicator with frequency output signal (0.2-1%).
      8. Gas analyzer of high concentration (0.5-20%).

   H₂S Range of hydrogen sulfide concentration from 5 ppb to 10 ppm
      9. SVG-5 for dwelling zone (5-200 ppb).
      10. SVG-6 for working area (0.5-10 ppm).

   NO_x Range of nitrogen oxide concentration from 1 ppb to 2 ppm
      11. GOA-1 for ecological monitoring of dwelling zone (0.05-2 ppm).
      12. Detector of high explosive substance (1 ppb-2 ppm).

   NH₃ Range of ammonia concentration from 50 ppb to 100 ppm
      13. Gas analyzer for dwelling zone (0.05-2 ppm).
      14. Gas analyzer for working area (0.2-5 ppm).
      15. Leak detection devise for cold store (1-100 ppm).

   C₂H₅SH Range of thiol (mercaptan) concentration from 1 to 50 ppm
      16. Devise for leak detection (1-50 ppm).