Importance

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Abstract

An apparatus for measuring the concentration of a target substance includes a detection container, a pump, and an integral temperature indicator or integral temperature correction factor indicator. The detection container has or contains a detection material chemically reactive with the target substance to produce an observable indication upon exposure to the target substance and such that the concentration of the target substance detected is readable from the observable indication. The pump is engageable with the detection container and operable to draw a sample of a gaseous environment into the detection container, the drawn sample containing the target substance, such that the detection material is exposed to the target substance. The integral temperature correction factor indicator, is particularly adapted to illuminate or indicate the correction factor applicable to the concentration measurement at specific temperatures.

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First Claim