Probes are used to draw in the sample gas and used in conjunction with a gas analyzer that has a pump to create suction (negative pressure). Probes range in size and characteristics. We offer very small needle probes for headspace analysis, telescopic probes for inspectors, small stainless steel probes for leak detection, and high-temperature probes for combustion analysis. Be attentive as gas filters may be needed for your application to condition the gas before entering the gas analyzer.