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The REED R3500 is a pen-style digital pH meter covering a 0-14 pH range with a dual LCD screen showing pH and temperature readings simultaneously. It ..

The REED R3500 is a compact, pen-style pH meter with a waterproof housing and a dual LCD that shows pH and temperature at the same time. It covers the..

The REED R3510 is a compact pen-style pH meter with an extended slim probe, well suited to reaching into narrow test tubes, vials, and sample containe..

This NIST-certified edition of the REED R3510 pairs the same slim, long-stem pH pen design with a NIST-traceable calibration certificate for documente..