Portable ORP and Redox Meters

Orion 4-Star Plus Portable pH/Conductivity Meter
Orion 4-Star Plus Portable pH/Conductivity Meter

The Orion 4 Star Plus is a portable pH/Conductivity meter which delivers over 2,000 hours of continuous operation.

Orion 4-Star Plus pH / DO Meter
Orion 4-Star Plus pH / DO Meter

The battery operated Orion 4 Star pH / DO meter is suitable for use in the most demanding applications and offers over 2,000 hours of continuous operation.

Orion 4-Star Plus pH/RDO Portable Meter
Orion 4-Star Plus pH/RDO Portable Meter

The Orion 4 Star pH / RDO meter requires no membranes. It offers simultaneus display of dissolved oxygen, pH and temperature on the backlit LCD display.

Orion 4-Star Plus Portable pH/lSE Meter
Orion 4-Star Plus Portable pH/lSE Meter

The 4 Star Plus pH / ISE Meter is a battery operated meter which can deliver over 2,000 hours of continuous operation.

Orion 5-Star Plus pH / RDO / Conductivity Portable Meter
Orion 5-Star Plus pH / RDO / Conductivity Portable Meter

The Orion 5 Star meter simultaneously displays pH, dissolved oxygen, conductivity and temperature on the backlit LCD display.

5-Star Plus Multimeter
5-Star Plus Multimeter

The 5 Star portable multi meter is a battery operated meter which offers simultaneous pH/ISE, DO, ORP, conductivity and temperature measurements in one hand-held unit.

Orion 5-Star Plus Portable pH / ORP / DO / Conductivity Multimeter
Orion 5-Star Plus Portable pH / ORP / DO / Conductivity Multimeter

The Orion 5 Star Plus is a waterprooof, battery operated meter for monitoring pH, DO and conductivity. It can deliver over 2,000 hours of continuous operation.