Handhelds: Water Quality Testing Products

SmarTROLL handhelds are the industry’s first water quality monitoring sensors to utilize mobile device technology. Simply connect the probe to the battery pack, launch the app on your phone or tablet, and go.

Aqua TROLL 500 Multiparameter Sonde

Flexible multiparameter sonde with smartphone interface. Suitable for all applications.

smarTROLL RDO Handheld

NEW! Use your iOS™ or Android™ mobile device to check dissolved oxygen levels instantly.

Aqua TROLL 400 Multiparameter Probe

All-in-one multiparameter process probe designed to measure 12 water parameters.