Measure ORP simply and accurately with these standards, stable for up to a year (unopened).
$119.85 - $169.27
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Measure ORP simply and accurately with Thermo Scientific™ Orion™ ORP Standards for Redox/ORP Electrodes. Orion OPR standards are stable for up to a year (unopened) and can be used directly from the bottle with no mixing or diluting.