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Extech CO240 Information the information about the Extech CO240: Introduction The Extech CO240 is a portable carbon dioxide meter that measures CO2 levels in the air. It is a useful tool for people who are concerned about their exposure to CO2, such as those who work in enclosed spaces or who have respiratory problems.

Extech RF41 Information The Extech RF41 is a portable battery coolant/glycol refractometer with automatic temperature compensation (ATC). It measures propylene/ethylene glycol freezing points from -50°C to 0°C and specific gravity of battery acid from 1.11 to 1.30. The RF41 is a valuable tool for automotive technicians, fleet managers, and anyone who needs to monitor the condition of their batteries and coolants. Image of Extech RF41 refractometer Specifications