Sper Scientific Heat Stress Monitor Unit EA. Specifications for Sper Scientific Heat Stress Monitor 800036: Catalog number: 97039-646 Type: PH METERS Description: HEAT STRESS MONITOR Supplier Number: 800036 Package Contents: Sper Scientific Heat Stress Monitor 800036 / 97039-646 The Sper Scientific Heat Stress Monitor 800036 is a quality addition to the Sper Scientific lineup. For more great deals on pH Meters by Sper Scientific please browse our Sper Scientific pH Meters page. Sper Scientific Heat Stress Monitor 800036 Unit EA