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Ohaus® Starter® pH Pen Meters
$65.90Two models with varying resolution and accuracy, ST10 and ST20 offer a convenient way to measure pH, or the relative acidity or alkalinity of a sample at a given temperature. The pH pen meters can be completely operated with just one hand, freeing up...669-10039$65.90 -
Ohaus® Starter® TDS Pen Meters
$99.35When you need reliable and accurate measurement of TDS, the Starter pen meter offer a great value in a portable and compact design. Bring the Starter TDS Meter wherever your need to measure the combined content of all organic and inorganic substances in...669-10045$99.35