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Apollo Safety - Leaders in Safety Technology

Calibration Gases

NIST Traceable Calibration Gases

Apollo Safety offers a wide range of NIST traceable calibration gases for all calibration needs. We provide high-quality, NIST-traceable calibration gases and custom mixtures to ensure your gas detectors perform reliably in industrial, commercial, and safety applications. From single-gas cylinders to multi-component blends, our products support precise calibration, helping prevent hazards like toxic exposure or explosions. Trusted brands like RKI and Industrial Scientific compatible. Prices subject to change due to tariffs and market fluctuations—contact us for current quotes.Whether calibrating for CO, H2S, O2, or exotic gases, our inventory includes standard and custom options in aluminum or steel cylinders (17L to 650L). Maintain compliance with OSHA and ANSI standards through regular calibration every 6 months.

  • Ammonia (NH3) Available in 10, 25, 100, 200 PPM
  • Carbon Monoxide (CO) Available in 25, 50, 100, 300, 500 PPM
  • Chlorine (CL2) Available in 2, 5, 10 PPM
  • Hydrogen (H2) Availble in 10% LEL, 50 % LEL
  • Hydrogen Sulfide (H2S)
  • Hydrogen Cyanide (HCN)
  • Methane (CH4) Available in 5% LEL, 10% LEL, 50% LEL and 99.9%/Vol
  • Nitrogen (N2) Available in in 99.9% / Vol
  • Sulfur Dioxide (SO2) Available in 5 , 10 PPM
  • Silane (SiH4) Available in 5, 10 PPM
  • Hexane15% / LEL

Many other concentrations and custom calibration mixtures also available. 

Call toll-free 800-813-5408 to speak with one of our gas detection experts.

Prices are subject to change without notice due to ongoing tariff adjustments and market conditions. For the most accurate and up-to-date pricing, please contact us directly.

 

 

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Cylinder, Calibration Gas, 20.9% Oxygen, Steel, 34L
Cylinder, Calibration Gas, 20.9% Oxygen, Steel, 34L
SKU: 18100693
$67.00
In Stock
REGULATOR, PRESSURE, 1.0 LPM, CGA-C10, MALE
REGULATOR, PRESSURE, 1.0 LPM, CGA-C10, MALE
SKU: 18102155
$554.00
In Stock
REGULATOR, PRESSURE, 1.0 LPM, CGA-C10, MALE
REGULATOR, PRESSURE, 1.0 LPM, CGA-C10, MALE
SKU: 18102297
$235.00
In Stock
REGULATOR, PRESSURE, 0.5 LPM, CGA-C10, MALE
REGULATOR, PRESSURE, 0.5 LPM, CGA-C10, MALE
SKU: 18102298
$235.00
In Stock
REGULATOR, PRESSURE, 0.5 LPM, CGA-600, FEMALE
REGULATOR, PRESSURE, 0.5 LPM, CGA-600, FEMALE
SKU: 18102299
$204.00
In Stock
REGULATOR, PRESSURE, 0.5 LPM, CGA-590, MALE
REGULATOR, PRESSURE, 0.5 LPM, CGA-590, MALE
SKU: 18102300
$294.00
In Stock
Cylinder, Calibration Gas, 50 ppm Hydrogen Sulfide, 100 ppm Carbon Monoxide, 2.5% Methane (50% LEL), 16% Oxygen, Aluminum 58L
Cylinder, Calibration Gas, 50 ppm Hydrogen Sulfide, 100 ppm Carbon Monoxide, 2.5% Methane (50% LEL), 16% Oxygen, Aluminum 58L
SKU: 18103143
$327.00
In Stock
REGULATOR, TRIGGER, CGA-C10, MALE
REGULATOR, TRIGGER, CGA-C10, MALE
SKU: 18103580
$318.00
In Stock
Cylinder, Calibration Gas, 25 ppm Hydrogen Sulfide, 50 ppm Carbon Monoxide, 2.5% Methane (50% LEL), 20.9% Oxygen, Aluminum, 58L
Cylinder, Calibration Gas, 25 ppm Hydrogen Sulfide, 50 ppm Carbon Monoxide, 2.5% Methane (50% LEL), 20.9% Oxygen, Aluminum, 58L
SKU: 18105262
$354.00
In Stock
Cylinder, Calibration Gas, 50 ppm Hydrogen Sulfide, Aluminum, 58L
Cylinder, Calibration Gas, 50 ppm Hydrogen Sulfide, Aluminum, 58L
SKU: 18108670
$222.00
In Stock
Cylinder, Calibration Gas, 25 ppm Hydrogen Sulfide, 100 ppm Carbon Monoxide, .35% Pentane (25% LEL), 18% Oxygen, Aluminum, 58L
Cylinder, Calibration Gas, 25 ppm Hydrogen Sulfide, 100 ppm Carbon Monoxide, .35% Pentane (25% LEL), 18% Oxygen, Aluminum, 58L
SKU: 18109155
$354.00
In Stock
Cylinder, Calibration Gas, 25 ppm Hydrogen Sulfide, 100 ppm Carbon Monoxide, 2.5% Methane (50% LEL), 18% Oxygen, Aluminum, 58L
Cylinder, Calibration Gas, 25 ppm Hydrogen Sulfide, 100 ppm Carbon Monoxide, 2.5% Methane (50% LEL), 18% Oxygen, Aluminum, 58L
SKU: 18109156
$354.00
In Stock
Cylinder, Calibration Gas, 25 ppm Hydrogen Sulfide, 100 ppm Carbon Monoxide, .35% Pentane (25% LEL), 18% Oxygen, Aluminum, 650L
Cylinder, Calibration Gas, 25 ppm Hydrogen Sulfide, 100 ppm Carbon Monoxide, .35% Pentane (25% LEL), 18% Oxygen, Aluminum, 650L
SKU: 18109159
$2,170.00
In Stock
Cylinder, Calibration Gas, 25 ppm Hydrogen Sulfide, 100 ppm Carbon Monoxide, 2.5% Methane (50% LEL), 18% Oxygen, Aluminum, 650L
Cylinder, Calibration Gas, 25 ppm Hydrogen Sulfide, 100 ppm Carbon Monoxide, 2.5% Methane (50% LEL), 18% Oxygen, Aluminum, 650L
SKU: 18109160
$2,170.00
In Stock
Cylinder, Calibration Gas, 5 ppm Nitrogen Dioxide, 100 ppm Carbon Monoxide, 2.5% Methane (50% LEL), 18% Oxygen, Aluminum, 650L
Cylinder, Calibration Gas, 5 ppm Nitrogen Dioxide, 100 ppm Carbon Monoxide, 2.5% Methane (50% LEL), 18% Oxygen, Aluminum, 650L
SKU: 18109172
$2,646.00
In Stock
Cylinder, Calibration Gas, 25 ppm Hydrogen Sulfide, 100 ppm Carbon Monoxide, 1.05% Propane (50% LEL), 18% Oxygen, Aluminum, 58L
Cylinder, Calibration Gas, 25 ppm Hydrogen Sulfide, 100 ppm Carbon Monoxide, 1.05% Propane (50% LEL), 18% Oxygen, Aluminum, 58L
SKU: 18109177
$546.00
In Stock
Cylinder, Calibration Gas, 100 ppm, Carbon Monoxide, .35% Pentane (25% LEL), 2.5% Carbon Dioxide, 18% Oxygen, Steel, 552L
Cylinder, Calibration Gas, 100 ppm, Carbon Monoxide, .35% Pentane (25% LEL), 2.5% Carbon Dioxide, 18% Oxygen, Steel, 552L
SKU: 18109186
$463.00
In Stock
Cylinder, Calibration Gas, 25 ppm Hydrogen Sulfide, 100 ppm Carbon Monoxide, .35% Pentane (25% LEL), 18% Oxygen, Aluminum, 34L
Cylinder, Calibration Gas, 25 ppm Hydrogen Sulfide, 100 ppm Carbon Monoxide, .35% Pentane (25% LEL), 18% Oxygen, Aluminum, 34L
SKU: 18109191
$281.00
In Stock
Cylinder, Calibration Gas, 25 ppm Hydrogen Sulfide, 100 ppm Carbon Monoxide, .35% Pentane (25% LEL), 18% Oxygen, 5 ppm Sulfur Dioxide, Aluminum, 58L
Cylinder, Calibration Gas, 25 ppm Hydrogen Sulfide, 100 ppm Carbon Monoxide, .35% Pentane (25% LEL), 18% Oxygen, 5 ppm Sulfur Dioxide, Aluminum, 58L
SKU: 18109222
$402.00
In Stock
Cylinder, Calibration Gas, 25 ppm Hydrogen Sulfide, 100 ppm Carbon Monoxide, 2.5% Methane (50% LEL), 18% Oxygen, 10 ppm Sulfur Dioxide, Aluminum, 650L
Cylinder, Calibration Gas, 25 ppm Hydrogen Sulfide, 100 ppm Carbon Monoxide, 2.5% Methane (50% LEL), 18% Oxygen, 10 ppm Sulfur Dioxide, Aluminum, 650L
SKU: 18109231
$2,545.00
In Stock
Cylinder, Calibration Gas, 25 ppm Hydrogen Sulfide, 100 ppm Carbon Monoxide, 2.5% Methane (50% LEL), 18% Oxygen, 10 ppm Sulfur Dioxide, Aluminum, 116L
Cylinder, Calibration Gas, 25 ppm Hydrogen Sulfide, 100 ppm Carbon Monoxide, 2.5% Methane (50% LEL), 18% Oxygen, 10 ppm Sulfur Dioxide, Aluminum, 116L
SKU: 18109232
$765.00
In Stock
Cylinder, Calibration Gas, 25 ppm Hydrogen Sulfide, 100 ppm Carbon Monoxide, .35% Pentane (25% LEL), 18% Oxygen, 10 ppm Sulfur Dioxide, Aluminum, 116L
Cylinder, Calibration Gas, 25 ppm Hydrogen Sulfide, 100 ppm Carbon Monoxide, .35% Pentane (25% LEL), 18% Oxygen, 10 ppm Sulfur Dioxide, Aluminum, 116L
SKU: 18109234
$694.00
In Stock
Cylinder, Calibration Gas, 5 ppm Nitrogen Dioxide, 100 ppm Carbon Monoxide, .35% Pentane (25% LEL), 18% Oxygen, Aluminum, 650L
Cylinder, Calibration Gas, 5 ppm Nitrogen Dioxide, 100 ppm Carbon Monoxide, .35% Pentane (25% LEL), 18% Oxygen, Aluminum, 650L
SKU: 18109235
$3,432.00
In Stock
Cylinder, Calibration Gas, 10 ppm Sulfur Dioxide, 100 ppm Carbon Monoxide, 2.5% Methane (50% LEL), 18% Oxygen, Aluminum, 650L
Cylinder, Calibration Gas, 10 ppm Sulfur Dioxide, 100 ppm Carbon Monoxide, 2.5% Methane (50% LEL), 18% Oxygen, Aluminum, 650L
SKU: 18109325
$2,170.00
In Stock
Cylinder, Calibration Gas, 25 ppm Hydrogen Sulfide, 100 ppm Carbon Monoxide, 2.5% Carbon Dioxide, .35% Pentane (25% LEL), 18% Oxygen, Aluminum, 650L
Cylinder, Calibration Gas, 25 ppm Hydrogen Sulfide, 100 ppm Carbon Monoxide, 2.5% Carbon Dioxide, .35% Pentane (25% LEL), 18% Oxygen, Aluminum, 650L
SKU: 18109362
$2,605.00
In Stock
Cylinder, Calibration Gas, 25 ppm Hydrogen Sulfide, 100 ppm Carbon Monoxide, 2.5% Carbon Dioxide, 2% Methane (40% LEL), 18% Oxygen, Aluminum, 650L
Cylinder, Calibration Gas, 25 ppm Hydrogen Sulfide, 100 ppm Carbon Monoxide, 2.5% Carbon Dioxide, 2% Methane (40% LEL), 18% Oxygen, Aluminum, 650L
SKU: 18109363
$2,605.00
In Stock
Cylinder, Calibration Gas, 20 ppm Hydrogen Sulfide, 80 ppm Carbon Monoxide, .9% Isobutane (50% LEL), 18% Oxygen, Aluminum, 650L
Cylinder, Calibration Gas, 20 ppm Hydrogen Sulfide, 80 ppm Carbon Monoxide, .9% Isobutane (50% LEL), 18% Oxygen, Aluminum, 650L
SKU: 18109416
$2,170.00
In Stock
AMMONIA PPM 25, NITROGEN BALANCE
AMMONIA PPM 25, NITROGEN BALANCE
SKU: 18109584
$2,654.00
In Stock
HYDROGEN PPM 500, NITROGEN BALANCE
HYDROGEN PPM 500, NITROGEN BALANCE
SKU: 18109589
$954.00
In Stock
CARBON MONOXIDE PPM 100, NITROGEN BALANCE
CARBON MONOXIDE PPM 100, NITROGEN BALANCE
SKU: 18109593
$436.00
In Stock
CYL, 75 H2S, 100 CO, 50% LEL, METH, 15% O2, AL, 5.8L
CYL, 75 H2S, 100 CO, 50% LEL, METH, 15% O2, AL, 5.8L
SKU: 18109598
$1,102.00
In Stock
Cylinder,H2 50% LEL in Air,34AL for EU
Cylinder,H2 50% LEL in Air,34AL for EU
SKU: 81-0002RK-E04
$158.00
In Stock
81-0003RK-17 Cylinder,Propane,10% LEL in Air,17L
81-0003RK-17 Cylinder,Propane,10% LEL in Air,17L
SKU: 81-0003RK-17
$45.00
81-0012RK Cylinder, Methane, 50% LEL in Air, 17L
81-0012RK Cylinder, Methane, 50% LEL in Air, 17L
SKU: 81-0012RK
$40.50
81-0018RK Cylinder, isobutane 50% LEL in Air, 17L
81-0018RK Cylinder, isobutane 50% LEL in Air, 17L
SKU: 81-0018RK
$45.00
81-0028RK Cylinder,50% LEL acetylene in Air,17 liter
81-0028RK Cylinder,50% LEL acetylene in Air,17 liter
SKU: 81-0028RK
$45.00
81-0077RK-01 Cylinder, Compressed Air, 34L
81-0077RK-01 Cylinder, Compressed Air, 34L
SKU: 81-0077RK-01
$55.00
81-0091RK Cylinder, Pentane 25% LEL / CO 100 ppm / O2 19% in N2, 17L
81-0091RK Cylinder, Pentane 25% LEL / CO 100 ppm / O2 19% in N2, 17L
SKU: 81-0091RK
$45.00
81-0093RK Cylinder, Pentane 25% LEL / CO 50 ppm / O2 12% in N2, 17L
81-0093RK Cylinder, Pentane 25% LEL / CO 50 ppm / O2 12% in N2, 17L
SKU: 81-0093RK
$45.00
81-0094RK Cylinder, nbutane 50% LEL / O2 12% / N2, 17L
81-0094RK Cylinder, nbutane 50% LEL / O2 12% / N2, 17L
SKU: 81-0094RK
$45.00
81-0095RK Cylinder,Oxygen 25% Vol in N2,17L
81-0095RK Cylinder,Oxygen 25% Vol in N2,17L
SKU: 81-0095RK
$60.00
81-0101RK Cylinder, Methane 50% LEL/17% O2 in N2, 17L
81-0101RK Cylinder, Methane 50% LEL/17% O2 in N2, 17L
SKU: 81-0101RK
$45.00
81-0137RK-04 Cylinder,25 ppm H2S/100 ppm CO/50 %LEL CH4/18 %vol O2,34L
81-0137RK-04 Cylinder,25 ppm H2S/100 ppm CO/50 %LEL CH4/18 %vol O2,34L
SKU: 81-0137RK-04
$165.00
81-0139RK-04 Cylinder,20 ppm H2S/60 ppm CO/1.45 %vol CH4/15 %vol O2,34L
81-0139RK-04 Cylinder,20 ppm H2S/60 ppm CO/1.45 %vol CH4/15 %vol O2,34L
SKU: 81-0139RK-04
$135.00
Cylinder,H2S 25 ppm in N2,34AL
Cylinder,H2S 25 ppm in N2,34AL
SKU: 81-0151RKTYS-04
$75.00
In Stock
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