The GX4 is an accurate and sensitive gas monitor which is fully NIOSH certified for the GVS / Nova family of respirators when paired with the Radex breathing air filtration system. One unique feature that GX4 has is the factory-calibrated gas cartridge sensor system.  These cartridges do not require field calibration but due to their long life (up to 2 years), their calibration must be checked regularly (recommend once per month). BlastOne offers various calibration-check packages, along with separate gases and related parts.  These include:

• Packages.  These come with the following:
  • The applicable flow regulator,
  • One bottle of Zero air, and
  • One bottle of the respective gas.
• Flow Regulators.  Separate calibration flow regulators are available in either the Carbon Monoxide type or the Hydrogen Sulfide type.
• Gases.  Standard canister bottles of calibration gas are available separately in the following types:
  • Zero Air
  • Carbon Monoxide 20 PPM
  • Hydrogen Sulfide 20 PPM

NOTE.  Calibration gas is considered HAZMAT for shipping purposes and cannot be shipped by overnight air.  Please allow enough delivery time for regular ground UPS shipment.