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Order Calibration Gas Online.
Precision Mixtures, Easy Shopping, Safe Ordering, Fast Shipping.
NIST-Traceable Certificate of Analysis with Every Cylinder.



Single Gases
and Multi-Mixes

Buy your cal gas right here, it's so fast and easy.  We offer every common test gas in lightweight disposable cylinders.  Get started by clicking on your target gas in the list below, then make your selections of a concentration and cylinder size.  That's all there is to it.  Most orders ship the same business day.

Ammonia

Benzene
Carbon Dioxide
Carbon Monoxide
Chlorine
Ethylene Oxide
Hexane
Hydrogen
Hydrogen Cyanide
Hydrogen Sulfide
Isobutylene
Methane
Nitric Oxide
Nitrogen
Nitrogen Dioxide
Oxygen
Propane
Sulfur Dioxide
Zero Air


Buy a Regulator for a 103L/58L Cylinder


Buy a Regulator for a 34L/17L Cylinder

Buy a Carrying Case

Click here for cylinder specifications

testimonial from National Metrology Lab


Kit 'Er Up
With a Calibration Kit


PortaCal calibration kit

Create your own customized PortaCal Calibration Kit, a convenient way to keep all your cal gas supplies together.  Build your kit by adding a regulator and a carrying case -- specially priced for a PortaCal Kit. Start by selecting your gas from the list at left. All the parts and accessories you'll need for your PortaCal Calibration Kit are with the gas concentration and cylinder size selections. And we'll toss in a free calibration log.

Multi- Mixes for Confined Space,
Other Applications

When you need a three or four gas mix for calibrating a confined space monitor or other critical application, we have the right gas for instruments from every major manufacturer, including Industrial Scientific, MSA and Tooke Rockies.  Just select the gas you need and go right to checkout.

Biosystems calibration gas
Biosystems part no. 54-9044E
Instrument Depot part no. 57-611N
BW Technology calibration gas
BW part no. CG-Q58-4
Instrument Depot part no. 57-622N
Draeger Safety calibration gas
Draeger part no. 4594639
Instrument Depot part no. 57-623N
ISC calibration gas
ISC part no. 1810-2187
Instrument Depot part no. 57-614N

MSA calibration gas
MSA part no. 804770
Instrument Depot part no. 57-627N
RAE Systems calibration gas
RAE part no. 600-0050-000
Instrument Depot part no. 57-609N

Tooke Rockies calibration gas
for TookeDAQ System

and other mud logging GCs
Instrument Depot part no. 56-650N


Click here for a list of all our multi-gas mixes


Other Stuff You Should Know

Federal DOT regulations require us to add a shipping surcharge in addition to regular shipping. These fees are charged per box, not for each cylinder. (A box holds up to 12 cylinders of 58L or 103L gas, or up to 24 cylinders of 17L gas.)

Fedex Ground Add $20.00 per box
Fedex Priority Overnight Add $30.00 per box

This DOT surcharge will not be shown in your total at checkout. We will email you promptly with final pricing, including all shipping charges, as soon as your order has been processed, usually within one business day.



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800-731-7071


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