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GASTEC Compressed Breathing Air Measurement Kit CG-1

Overview

Rapid Impurity Measurement for Compressed Breathing Air The Gastec CG-1 system allows for simple, fast, and simultaneous measurement of four harmful contaminants—CO, CO₂, water vapor, and oil mist—present in compressed breathing air from cylinders or compressors.

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Key Feature

No power source required

Compact, durable carrying case

Easy to connect to compressor or cylinder

Quick, accurate results on-site

Detects four contaminants simultaneously: CO, CO₂, water vapor, and oil mist

Technical Specifications

Gas to be measured	Measuring Range(s) (ppm)	Sampling time (min)	Qty of tubes/box	CGA Grade D	OSHA	NFPA
Carbon Dioxide (CO₂)	100-3000	2	10	≤ 1000 ppm	≤ 1000 ppm	≤ 1000 ppm
Carbon Monoxide (CO)	5-100 2.5-5	2 4	10	≤ 10 ppm	≤ 10 ppm	≤ 5 ppm
Oil Mist	0.3-5 mg/m³	25	10	≤ 5 mg/m³	≤ 5 mg/m³	≤ 2 mg/m³
Oxygen (O₂) (Deluxe Kit only)	2-24%	1	10	19.5-23.5%	19.5-23.5%	19.5-23.5%
Water Vapor (H₂O)	20-160 mg/m³	1	10	* see note ↓	≤ 67 ppm or ≤ 49 mg/m³	≤ 24 ppm or ≤ 19 mg/m³
Water Vapor (H₂O) (Optional)	100-1000	20 sec	10	-	-	-

Did You Know?

Why measuring breathing air quality in cylinder is importing

Oxygen

Essential for life, oxygen becomes dangerous at very high or low levels. Deficiency can cause cognitive issues, organ damage, and hypoxemia, while excess can lead to oxidative stress and lung damage. Monitoring is vital for worker safety.

Carbon Monoxide (CO)

The most deadly contaminant—colorless and odorless, CO binds to hemoglobin faster than oxygen, causing tissue starvation. Even low exposure can trigger headaches, dizziness, and unconsciousness, while high exposure may be fatal.

Carbon Dioxide (CO₂)

CO₂ is toxic in high amounts. Increased breathing rates with CO₂ exposure raise the intake of other harmful gases. Symptoms include dizziness, sweating, shortness of breath, and at severe levels, coma or convulsions.

Oil Mist

Formed from condensed hydrocarbons, oil mist can penetrate deep into the lungs. While larger particles are filtered, fine ones cause respiratory issues such as lipoid pneumonia and emphysema.

Water Vapor

Water vapor promotes system corrosion and can freeze regulators in cold conditions. It also damages filtration catalysts that remove CO, turning a simple contaminant into a major system risk.

Oxygen Deficiency

A lack of oxygen in the breathing environment is one of the most immediate hazards. Even short exposure can impair coordination and decision-making, while prolonged deficiency may lead to loss of consciousness or death.

How to Use GASTEC Compressed Breathing Air Measurement Kit CG-1

Prepare the Kit

Ensure the measurement kit is complete with all tubes, sensors, and the sampling pump.
Check that the air source (cylinder or compressor) is ready for testing.