Calibration Gas Selection To find the calibration gas that you wish to purchase, begin by selecting the number of components in the blend. For example, 50 ppm Carbon Monoxide with an Air balance, is a "One Component Blend". The balance gas (Air or Nitrogen) is not considered a component. >> One Component Blends >> Two Component Blends >> Three Component Blends >> Four Component Blends >> Five Component Blends After you have identified the calibration gas blend, use the pull down menu to finish your selection by identifying the cylinder size. Regulators & Accessories >> Regulators for Non-Reactive Gases >> Regulators for Reactive Gases >> Cylinder Recycling >> Carrying Cases >> Tubing Certified Calibration Gases Certified calibration gases are available in 17, 34, 58, 74, 103, or 221-liter cylinders. The 17-liter cylinder contains 0.6 cubic feet of gas at 240 psig; the 34- liter has a capacity of 1.2 cubic feet at 500 psig, the 58-liter has 2.0 cubic feet at 500 psig, the 74-liter has a capacity of 2.6 cubic feet at 500 psig, the 103-liter has a capacity of 3.6 cubic feet at 1,000 psig, and the 221-liter has a capacity of 8.0 cubic feet at 260 psig. All gases are certified standards. Contact Argus-Hazco to order your custom blend. MSDS & Certificates of Analysis Argus-Hazco has a MSDS for all of the blends that we sell. We use the MSDS library of Airgas, the supplier of our primary 1% NIST traceable gas standards. We also generate a Certificate of Analysis for each cylinder or frequently the CofA will cover a group of cylinders. Both documents are stored in electronic format. We do not supply the MSDS or CofA as a matter of course; this information is supplied upon request only. To request a MSDS, use the part number as a reference. To request a CofA, use the cylinder number as a reference. We can fax, mail or email these documents. Cal Gas 101 Gases & Cylinders General Rule Reactive gases are blended in aluminum cylinders Non-reactive gases are blended in steel cylinders See table of gases below for details. Exception Reactive gases are never blended in steel cylinders; however non-reactive gases will be blended in aluminum cylinders at the customer's request. Cylinders/Gases & Regulators The gas detection instrument defines the type of regulator: Fixed Flow - regulator has a preset flow rate from 0.3 liters per minute (lpm) to 6.0 lpm. The manufacturer will specify the required flow rate for calibration. We offer a select-a-flow regulator. A single regulator that has selectable fixed flow rates from 0.0 to 3.0 lpm. Useful for customers with various brands of instruments with different flow rates. Demand Flow - some instruments have an internal pump that draws a sample into the unit. A demand flow regulator (DFR) will match the flow rate that the sample draw pump generates. The cylinder will define the regulator in terms of thread connection: 17L steel & 34L steel: CGA 600 (external thread on cylinder/internal thread on regulator) 34L aluminum, 58L aluminum, 74L aluminum & 103L steel: CGA C10 (internal thread on cylinder/external thread on regulator) 221L steel: requires adapter to fit the CGA C10 regulator. The gas will define the material of construction of the regulator: Reactive gases require stainless steel construction and Teflon tubing. Non-reactive gases may use nickel plated brass construction and Tygon tubing. The OEM Will Define the Calibration Gas Concentration Generally, the manufacturer will recommend a gas concentration in the mid-range of the sensor; if a Carbon Monoxide (CO) sensor has a range of 0 - 500 ppm, the manufacturer will recommend a CO concentration of 250. More precisely, each manufacturer will recommend a specific concentration or blend that will be unique to their instruments, and may be required for the auto-calibration function to work properly. Reactive & Non-Reactive Gases Reactive Non-Reactive Ammonia (NH3) Chlorine (Cl2) Hydrogen Chloride (HCl) Hydrogen Cyanide (HCN) Hydrogen Sulfide (H2S) Nitric Oxide (NO) Nitrogen Dioxide (NO2) Nitrous Oxide (N2O) Sulfur Dioxide (SO2) Carbon Dioxide (CO2) Carbon Monoxide (CO) n-Hexane (C6H14) Hydrogen (H2) Isobutylene (C4H8) Methane (CH4) Oxygen (O2) n-Pentane (C5H12) Propane (C3H8) Zero Air Zero Nitrogen (N2) Cylinder Types Aluminum Cylinders Steel Cylinders 34 Liter (34A) 58 Liter (58A) 74 Liter (74A) 17 Liter (17S) 34 Liter (34S) 103 Liter (103S) 221 Liter (221S) Product Shelf Life Component Shelf Life (Months) Ammonia (NH3) Carbon Dioxide (CO2) Carbon Monoxide (CO) Chlorine (Cl2) Ethylene (C2H4) C n-Hexane Hydrogen Hydrogen Chloride (HCl) Hydrogen Cyanide (HCN) Hydrogen Sulfide (H2S) Isobutylene (C4H8) Methane (CH4) Nitric Oxide (NO) Nitrogen Dioxide (NO2) Nitrous Oxide (N2O) Oxygen (O2) n-Pentane (C5H12) Propane (C3H8) Sulfur Dioxide (SO2) Zero Air, Zero Nitrogen 12 Months 36 Months 36 Months 9 Months 36 Months 36 Months 36 Months 8 Months 12 Months 12 Months 36 Months 36 Months 12 Months 6 Months 12 Months 12 Months 36 Months 36 Months 12 Months 36 Months The shelf life of a blend of components will be equal to the shelf life of the component with the shortest shelf life. Example: The shelf life of a blend containing Hydrogen Sulfide (H2S - 12 Months) / Carbon Monoxide (CO - 36 Months) / Methane (CH4 - 36 Months) and Oxygen (O2 - 36 Months) is 12 months.