Isolation is the Key to Accurate TestsiV is a HYDROS Drive Port add-on accessory for the Control X10 that isolates pH, ORP, conductivity/salinity readouts and facilitates automatic alkalinity testing.About HYDROS iV Drive Port AccessoryFor precise pH and Conductivity readings, utilize the HYDROS iV. This add-on ensures that the test sample is physically separated, preventing any electronic interference from other equipment in the aquarium system. This guarantees more reliable data by eliminating any potential issues. Made in the USA utilizing additive manufacturing techniques.iV Key FeaturesIsolates pH and Conductivity Readings from the Aquarium for Interference-free Measurement*Automatic Alkalinity Testing*Mixes Test SampleStable Tabletop Base and Surface MountableDirectly Power by HYDROS Drive PortiV Includes:iV Base UnitTwo Probe HoldersFour Acrylic Rods for Attaching TubingMixing Pill iV SpecificsDimensions (LxWxH): 4.5 x 3.5 x 7.5in(not including Probes and tubing)Available Holders: Two Probes and Four Acrylic TubingBeaker size: 150mlCord Length: 6ftIncludes: Glass Beaker, Mixing Pill, and 500ml of Pre-Mixed kH Testing Reagent