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Ultrapen PT3 is a new ORP and temperature tester. It is as accurate and stable as benchtop lab equipment and features “dip-and-scoop” sampling for standing bodies of water and vertical streams, providing real-time analysis before atmospheric and other environmental conditions can affect the chemistry of the sample. Constructed of durable aircraft aluminum, this pen is fully potted for extra protection with an easy-to-read LCD and one-button functions.