As an Amazon Associate, we earn from qualifying purchases. Lab Grade Double Junction ORP Probe - Bulk Reef Supply Neptune Systems . 210224 Gallery Attributes Brand name, Manufacturer name, ManufacturerNeptune Systems Extra Product NameLab Grade Double Junction ORP Probe - Bulk Reef Supply extendedQty, qtyInStock0 keywordssaltwater aquarium supplies, reef aquarium supplies, marine fish tank, live rock, GFO, protein skimmers, two part dosing, aquarium carbon, fish food, RO/DI Systems, ecotech marine, aquaillumination, neptune systems, kessil, innovative marine moq, multiple, tierMinQty11 MPN, SKU210224 qtySourceupdateFromUrlEntry snippetNeptune Double Junction probes will out last most other traditional lab grade probes letting you go longer between calibrations, and having to purchase and replace probes less frequently. The Double Junction isolates the reference gel and probe from proteins and other organics that may otherwise precipitate and clog, shortening the lifespan of the probe. Longer lasting Reliable readings Quality connections BNC style connector *Calibration solutions sold separately Neptune's Double Junction ORP Probe is compatible with any monitor or controller with a BNC style connection. If you just need to replace your worn out probe or add another you will not be disappointed with the double junction feature of these probes. Most probes have a sing tierPrice1104.99 Distributor offers SellerSKUMOQIn stockMultiplePrices bulkreefsupply.com210224111 @ $104.99