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Water Quality

Our water quality testing equipment is designed to give you field-ready durability with accurate results you can trust. Whether you need a spot-checking handheld or a long-term monitoring probe, we’ve got your water quality testing needs covered.

Aqua TROLL 500

Aqua TROLL 500

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

Aqua TROLL 600 Multiparameter Sonde

Aqua TROLL 600 Multiparameter Sonde

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

smarTROLL Multiparameter Handheld

smarTROLL Multiparameter Handheld

Use your iOSâ„¢ or Androidâ„¢ mobile device to check 14 water quality parameters in seconds.

smarTROLL RDO

smarTROLL RDO

Use your iOSâ„¢ or Androidâ„¢ mobile device to check dissolved oxygen levels instantly. Virtually no training required, and no calibration needed.

Aqua TROLL 200

Aqua TROLL 200

Measures and records water level & pressure, conductivity, and temperature. Vented or non-vented.

RDO Titan

RDO Titan

Measures dissolved oxygen and temperature in process applications.

RDO PRO_X

RDO PRO_X

Low maintenance optical measurement of dissolved oxygen and temperature in process applications.

Aqua TROLL 400

Aqua TROLL 400

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

LISST ABS

LISST ABS

Sequoia Scientific, Inc. is proud to offer the first low-cost acoustic backscatter sensor designed specifically for measuring Suspended Sediment Concentration at a point.

LISST PortableXR

LISST PortableXR

Portable Laser Diffraction Particle Size Analyzer

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