In-Situ Rugged TROLL 200 Data Logger STEL Venting the drive-line pressure lets

Venting the drive-line pressure lets formation pressure reopen the bottom check valve and refill the chamber with fresh water

The Single Sample® Coliwasa is a polyethylene disposable sampler designed for collecting liquid samples from tanks

ethylene oxide

and calibration gas should be replaced before its expiry date to keep readings accurate and compliant

Ideal for diverse environments

In-Situ Rugged TROLL 200 Data Logger STEL Venting the drive-line pressure letsThe Rugged TROLL 200 is built for long and short term groundwater and surface water level monitoring, in pressure ranges up to 250 ft (76 m). Titanium and sealed construction including a sealed battery to reduce potential leak paths outperforms and outlasts specially coated data loggers, and 3D factory calibration with In Situ's anti drift system keeps it accurate for years of maintenance free operation. Set up, view, and download logs directly from