In-Situ

These NIST-traceable pH calibration solutions are ideal for calibrating pH probes, with several pH levels and sizes available to meet your needs.Solutions have a shelf life of 1 year unopened, and with proper storage should be used within 3 to 6 months after opening.Available in:pH 4, 7, or 10500 mL..

Use this reference solution to properly care for pH sensors (standalone or combination pH/ORP) installed on:smarTROLL Multiparameter HandheldsAqua TROLL 400 InstrumentsIt’s time to replace your reference junctions when the sensor fails to calibrate with a reasonable slope and offset, even after repl..

Use the pH Sensor Reference Junction Kit to replace junctions on pH sensors (standalone or combination pH/ORP) installed on:smarTROLL Multiparameter HandheldAqua TROLL 400 InstrumentsYou know it’s time to replace reference junctions when the sensor fails to calibrate with a reasonable slope and offs..

The PXD-261 Pressure Transducer measures water pressure, with 4-20 mA output for easy connection with data loggers and controllers. This durable water pressure sensor is available in vented (gauged) pressure ranges up to 576 ft (175 m) or non-vented (absolute) pressure ranges up to 231 ft (70 m).Fea..

Use this standard to calibrate dissolved oxygen, conductivity, pH, and ORP with a single solution. Available in 250 mL bottle 4 packs.Includes:Quick Cal 4 pack..

RDO Blue uses In-Situ’s patented Optical Rugged Dissolved Oxygen technology, an EPA-approved dissolved oxygen measurement method ideal for measuring DO and temperature in even the harshest environments. Suitable for handheld use or long-term deployment in fresh water or saltwater, this low-maintenan..

The RDO Classic Sensor Cap Replacement Kit has everything you need to replace your expired RDO Cap for Aqua TROLL 400 and RDO Titan Process Probe.See the RDO Cap Explainer for details on RDO Caps.Includes:12-month replacement RDO Sensor CapLens clothSilicone O-ring lubricant..

The RDO PRO Antifouling Guard significantly reduces biological fouling of RDO PRO and RDO PRO-X Probes. Specially formulated copper prevents fouling from occurring around the probe’s sensing area, improving the accuracy of your data and prolonging the length of your deployment. For best performance,..

Use the RDO PRO Calibration and Storage Cup for RDO PRO and RDO PRO-X probes. The cup can be used for both one-point (100%) and two-point (0%) calibrations.Includes:Calibration cupCalibration capStorage capWafer sponge..

This complete kit has everything you need to calibrate the RDO PRO or RDO PRO-X. Ideal for both one-point (100%) and two-point (0%) calibrations.Includes:Calibration cup500 mL of sodium sulfite (Na2SO3) solutionInstruction sheet..

The RDO PRO O-Ring Replacement Kit has all the O-rings and accessories you need maintain the waterproof seals on your RDO PRO or RDO PRO-X.Includes:Lens clothSilicone O-ring lubricantProbe body O-ringInternal nose cone O-ringSensor cap O-ringsInstruction sheet..

The RDO PRO Nose Cone Replacement Kit has several essential items for replacing your RDO PRO or RDO PRO-X nose cone, including a replacement O-ring to maintain a watertight seal.Includes:Nose coneLens clothProbe body O-ringSilicone O-ring lubricantInstruction sheet..