The high-quality testo 315-3 is an easy-to-use, ruggedly designed CO and CO<sub>2</sub> meter that enables you to carry out quick and reliable ambient measurements according to DIN EN 50543 standard.

For quick, precise measurement of carbon monoxide in ambient air &ndash; in accordance with DIN EN 50543: The testo 315-4 CO measuring instrument is easy to operate, has a robust design and is of durable quality.<br /><br />&nbsp;

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