The Drager 58L Ammonia (NH3) 50ppm/N2 Calibration Gas is a high-quality, non-refillable calibration gas cylinder designed for precise calibration of ammonia gas detectors. This versatile product contains 50ppm of ammonia in a nitrogen balance, ensuring accurate and reliable calibration results. Moreover, it is compatible with various calibration equipment, including Drager Bump Test Stations and X-dock systems