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200 ppm Carbon Monoxide, 50% LEL Methane, Balance: Air, Calibration Gas

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Precision Calibration Gas:  Non-Reactive Multi-Mixture # 307
Price: Starting at $32.00
Custom Mix - Allow 1-3 Days (average) for production
Manufacturer: GASCO

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Additional Information: - Non-Reactive Gas Mixtures - Non-Reactive Gas Mixtures - Non-Reactive Gas Mixtures
Important Notice Regarding Returns:
Due to the nature of this product, along with the Hazardous Material shipping restrictions imposed by all of the major carriers (UPS, FedEx, DHL, etc), Gas Cylinders purchased at are Non-Returnable and all sales of these products are considered final. See our "Terms & Conditions" page for additional information.

Why pay more for premium calibration gas? That's exactly what we thought. Manufacturers of standard and custom blended calibration gases routinely charge as much as 10% to 50% more than our everyday prices for GASCO calibration gases. was created to give you, the everyday users of calibration gases, regulators and other related accessories, a viable alternative to expensive, brand name calibration gases currently on the market.

Whetheryou are working in Public Safety as an emergency responder, maybe in a local firehouse or police department, or in an Educational Setting such as a university lab, a research center or even an Industrial Facility like paper mills, power plants or refineries, you can save critical dollars with our GASCO calibration gas, gas blends and specialty gases.

We strive to provide you with a calibration gas that is held to the highest quality standards in the industry today. Not only do we offer an incredible calibration gas, but we back it with over 40 years of technical gas detection and gas production experience. Not sure which product is best suited for your specific application? Were not just an online outlet! We are part of a 55+ year old leader in industrial distribution leaderand are here to help you select the right cal gas, calibration gas cylinder regulator or fittings and valves to complete your kit.

GASCO Calibration Gases are produced to the same blending and NIST Standards used by most all of the premium and ultra pure gas producers. So, why pay the brand name price? We have quality standards throughout our process. GASCOs quality systems begins with high purity raw materials which are precision blended in a state of the art facility, inspected to exacting standards and finally, shipped to you a high quality, contaminate free cylinder.

No other calibration gas manufacturer has our vast knowledge of portable gas monitors, indoor air quality monitors, fixed gas detection systems, continuous emission monitoring systems, infrared gas detection, process gas chromatographs, ion mobility spectrometers, flame ionization detectors, photo ionization detectors and other monitoring and detection technologies.

Specializing in non-refillable calibration gas mixtures, GASCO has the capability of providing a wide range of simple mixtures such as ultra high purity Nitrogen, as well as complex four gas mixtures and highly reactive gas mixtures.

We offer the largest selection of standard gas cylinders with sizes starting at 10 Liter, 17 Liter, 34 Liter, 44 Liter, 58 Liter, 74 Liter, 103 Liter, 116 Liter, 221 Liter and finally 552 Liter. After selecting the best premium GASCO Calibration Gas for your specific application, please use the drop down menu to select the most appropriate gas cylinder size available for your specific calibration gas.

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