{"product_id":"hm-digital-orp-200-professional-waterproof-orp-meter-digital-orp-amp-temperature-tester","title":"HM Digital ORP-200 Professional Waterproof ORP Meter | Digital ORP \u0026amp; Temperature Tester","description":"\u003ch1\u003eHM Digital ORP-200 Professional Waterproof ORP Meter | Digital ORP \u0026amp; Temperature Tester\u003c\/h1\u003e\n\u003ch2\u003eProduct Name\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eHM Digital ORP-200 Professional Waterproof ORP\/Temperature Meter | Oxidation Reduction Potential Tester | -999 to +1000 mV | 1 mV Resolution | Replaceable Sensor\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2\u003eBrand\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eHM Digital\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2\u003eModel\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eORP-200\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2\u003eProduct Category\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWater Quality Testing Instruments → ORP Meters \/ Redox Meters\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2\u003eProduct Type\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eDigital Handheld ORP \u0026amp; Temperature Meter\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch1\u003eShort Product Description\u003c\/h1\u003e\n\u003cp\u003eThe \u003cstrong\u003eHM Digital ORP-200\u003c\/strong\u003e is a professional handheld digital ORP meter designed to measure \u003cstrong\u003eOxidation Reduction Potential (ORP\/Redox)\u003c\/strong\u003e and temperature in liquids. It provides an ORP measurement range of \u003cstrong\u003e-999 to +1000 mV\u003c\/strong\u003e, with \u003cstrong\u003e1 mV resolution\u003c\/strong\u003e and accuracy of \u003cstrong\u003e0.5% (±2 mV)\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThe meter features a \u003cstrong\u003ewaterproof, submersible housing\u003c\/strong\u003e, digital calibration, data-hold functionality, automatic shut-off and a \u003cstrong\u003ereplaceable sensor\u003c\/strong\u003e, making it suitable for laboratory, field and water-treatment applications.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch1\u003eDetailed Product Overview\u003c\/h1\u003e\n\u003cp\u003eThe \u003cstrong\u003eHM Digital ORP-200\u003c\/strong\u003e is designed for users who need quick and reliable measurement of oxidation-reduction potential in water and other compatible liquids.\u003c\/p\u003e\n\u003cp\u003eORP, also known as \u003cstrong\u003eRedox Potential\u003c\/strong\u003e, indicates the tendency of a liquid to gain or lose electrons. ORP measurements are commonly used to monitor oxidation processes, disinfectant effectiveness and water-treatment conditions.\u003c\/p\u003e\n\u003cp\u003eThe ORP-200 combines ORP measurement with temperature measurement in a compact handheld design. Its waterproof housing allows the meter to be submerged during testing, while the replaceable sensor helps extend the useful life of the instrument.\u003c\/p\u003e\n\u003cp\u003eThe meter is factory calibrated and provides \u003cstrong\u003edigital calibration with fine adjustment\u003c\/strong\u003e, allowing users to maintain measurement accuracy during regular use.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch1\u003eKey Features\u003c\/h1\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eMeasures \u003cstrong\u003eOxidation Reduction Potential (ORP\/Redox)\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eMeasures liquid temperature\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eORP range: \u003cstrong\u003e-999 to +1000 mV\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eORP resolution: \u003cstrong\u003e1 mV\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eAccuracy: \u003cstrong\u003e0.5% (±2 mV)\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eTemperature resolution: \u003cstrong\u003e0.1°C \/ 0.1°F\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWaterproof, submersible housing\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eIP-67\u003c\/strong\u003e waterproof protection according to current product references\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eReplaceable sensor\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eDigital push-button calibration\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eAuto-ranging calibration with digital fine-tuning\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eData-hold function\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eLow-battery indicator\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eAutomatic shut-off after approximately 5 minutes\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eLarge, easy-to-read LCD display\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCompact handheld design\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eFloats when submerged\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eIncludes batteries and lanyard\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSuitable for field and laboratory applications\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch1\u003eTechnical Specifications\u003c\/h1\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHM Digital\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eORP-200\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMeasurement Parameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eORP \/ Redox Potential\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eORP Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-999 to +1000 mV\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eORP Resolution\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 mV\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eORP Accuracy\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.5% (±2 mV)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTemperature Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eApproximately 1–80°C \/ 33–176°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTemperature Resolution\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.1°C \/ 0.1°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTemperature Accuracy\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eApproximately ±2% according to product documentation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTemperature Compensation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAutomatic Temperature Compensation (ATC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCalibration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAuto-ranging with digital fine tuning\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCalibration Adjustment\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUp to ±100 mV offset\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDisplay\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLCD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eData Hold\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLow Battery Indicator\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAuto Shut-Off\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eApproximately 5 minutes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSensor\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eReplaceable glass\/platinum reference sensor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSensor Model\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSP-O2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHousing\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eWaterproof \/ Submersible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProtection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIP67\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower Supply\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBatteries\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBattery\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3 × 1.5V button cells in older documentation; current upgraded references list 2 × AAA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e18.5 × 3.4 × 3.4 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eApprox. Weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e96.4 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eApplication\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eWater quality, laboratory and field testing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e HM Digital documentation contains specifications from different production revisions. In particular, battery configuration and some temperature specifications vary between older and newer references. For the current physical stock, the manufacturer's supplied packaging\/manual should take precedence.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch1\u003eWhat Does ORP Measure?\u003c\/h1\u003e\n\u003cp\u003e\u003cstrong\u003eORP stands for Oxidation Reduction Potential.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eORP measures the ability of a liquid to oxidize or reduce substances. It is expressed in \u003cstrong\u003emillivolts (mV)\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eGenerally:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHigher positive ORP\u003c\/strong\u003e → greater oxidizing potential\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eLower ORP\u003c\/strong\u003e → lower oxidizing potential or greater reducing conditions\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eORP can be useful for monitoring oxidation and disinfection processes\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eORP measurement is particularly useful where water sanitation and oxidation processes need to be monitored.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch1\u003eApplications\u003c\/h1\u003e\n\u003cp\u003eThe HM Digital ORP-200 can be used for a wide range of applications, including:\u003c\/p\u003e\n\u003ch3\u003eWater Treatment\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eDrinking water testing\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWater purification\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWater treatment plants\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSTP and ETP applications\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eDisinfection monitoring\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSwimming Pools \u0026amp; Spas\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003ePool water monitoring\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSanitizer effectiveness monitoring\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSpa water testing\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eAquaculture \u0026amp; Aquariums\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eAquarium water monitoring\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eAquaculture systems\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eFish farming\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWater quality monitoring\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHydroponics \u0026amp; Agriculture\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eHydroponic systems\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eAgricultural water testing\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eIrrigation water monitoring\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eEnvironmental Testing\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eEnvironmental water testing\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eField water-quality measurements\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWastewater monitoring\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eIndustrial Applications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eCooling tower monitoring\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eOzone system monitoring\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eMetal finishing\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eProcess-water monitoring\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eLaboratory \u0026amp; Research\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eGeneral laboratory ORP testing\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eChemical process monitoring\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eResearch applications\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eHM Digital lists applications including water purification, agriculture, aquariums\/aquaculture, chlorine monitoring, environmental testing, hydroponics, pharmaceutical\/medical applications, pools\/spas and water treatment.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch1\u003eMajor Advantages\u003c\/h1\u003e\n\u003ch3\u003eWaterproof Design\u003c\/h3\u003e\n\u003cp\u003eThe ORP-200 has a waterproof, submersible housing, making it suitable for direct testing in water samples and field environments.\u003c\/p\u003e\n\u003ch3\u003eReplaceable Sensor\u003c\/h3\u003e\n\u003cp\u003eThe sensor can be replaced without replacing the complete meter, helping reduce long-term operating costs.\u003c\/p\u003e\n\u003ch3\u003eHigh Resolution\u003c\/h3\u003e\n\u003cp\u003eWith \u003cstrong\u003e1 mV ORP resolution\u003c\/strong\u003e, the meter allows users to monitor relatively small changes in ORP levels.\u003c\/p\u003e\n\u003ch3\u003eDigital Calibration\u003c\/h3\u003e\n\u003cp\u003eThe instrument uses digital calibration with fine adjustment, making calibration straightforward.\u003c\/p\u003e\n\u003ch3\u003ePortable\u003c\/h3\u003e\n\u003cp\u003eIts compact handheld form factor makes it convenient for laboratories, water-treatment facilities and on-site testing.\u003c\/p\u003e\n\u003ch3\u003eTemperature Measurement\u003c\/h3\u003e\n\u003cp\u003eThe meter simultaneously provides temperature information along with ORP measurements.\u003c\/p\u003e\n\u003ch3\u003eData Hold\u003c\/h3\u003e\n\u003cp\u003eThe data-hold function allows users to freeze the displayed measurement for easier recording.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch1\u003eCalibration\u003c\/h1\u003e\n\u003cp\u003eThe ORP-200 uses \u003cstrong\u003eauto-ranging calibration with digital fine tuning\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThe instrument is factory calibrated, but ORP meters should be recalibrated periodically depending on usage and required accuracy.\u003c\/p\u003e\n\u003cp\u003eFor best measurement performance:\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cp\u003eUse an appropriate ORP calibration solution.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eClean\/rinse the sensor before calibration.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003ePlace the sensor into the calibration solution.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eAllow the reading to stabilize.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003ePerform the digital calibration adjustment.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eRinse the sensor after calibration.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eStore the sensor appropriately.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003eHM Digital recommends regular recalibration because ORP electrode performance can change with use.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch1\u003eSensor Information\u003c\/h1\u003e\n\u003cp\u003e\u003cstrong\u003eSensor Type:\u003c\/strong\u003e Replaceable electrode\u003cbr\u003e\u003cstrong\u003eSensor Model:\u003c\/strong\u003e SP-O2\u003cbr\u003e\u003cstrong\u003eConstruction:\u003c\/strong\u003e Glass sensor and reference electrode assembly\u003c\/p\u003e\n\u003cp\u003eA replaceable sensor allows the ORP-200 to remain useful even after the original electrode reaches the end of its service life.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch1\u003eImportant Usage Information\u003c\/h1\u003e\n\u003cp\u003eFor accurate and stable ORP measurements, the liquid being tested needs sufficient conductivity. HM Digital documentation states that the meter requires approximately \u003cstrong\u003e10 µS conductivity \/ 5 ppm\u003c\/strong\u003e minimum and will not provide suitable measurements in pure or distilled water.\u003c\/p\u003e\n\u003cp\u003eDo not use distilled water for long-term sensor storage.\u003c\/p\u003e\n\u003cp\u003eAfter use:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eRinse the electrode appropriately.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eAvoid scratching or damaging the sensing element.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eKeep the sensor properly hydrated.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eStore the instrument according to the manufacturer's electrode-storage recommendations.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch1\u003ePackage Contents\u003c\/h1\u003e\n\u003cp\u003eA typical ORP-200 package includes:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e1 × HM Digital ORP-200 ORP Meter\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e1 × Replaceable ORP Sensor \/ Electrode\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eBatteries\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eProtective Sensor Cap\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eLanyard\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eUser Manual\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePackage contents may vary by production revision or market.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch1\u003eIdeal For\u003c\/h1\u003e\n\u003cp\u003e\u003cstrong\u003eHM Digital ORP-200 is ideal for:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eWater treatment professionals\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eLaboratories\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eEnvironmental testing\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSwimming pool professionals\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eAquarium owners\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eAquaculture operators\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHydroponic growers\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eIndustrial water-treatment facilities\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eResearch laboratories\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eField technicians\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWater-quality testing professionals\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch1\u003eProduct Highlights for Website\u003c\/h1\u003e\n\u003cp\u003e\u003cstrong\u003eProfessional ORP Testing\u003c\/strong\u003e\u003cbr\u003eMeasure oxidation-reduction potential from \u003cstrong\u003e-999 to +1000 mV\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWaterproof Construction\u003c\/strong\u003e\u003cbr\u003eSubmersible waterproof housing suitable for field and water-testing applications.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eReplaceable Sensor\u003c\/strong\u003e\u003cbr\u003eReplace the electrode instead of replacing the entire meter.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDigital Calibration\u003c\/strong\u003e\u003cbr\u003eConvenient digital calibration with fine adjustment.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTemperature Measurement\u003c\/strong\u003e\u003cbr\u003eDisplays temperature along with ORP measurement.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePortable Design\u003c\/strong\u003e\u003cbr\u003eCompact handheld meter suitable for laboratory and on-site testing.\u003c\/p\u003e\n\u003chr\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"HM DIGITAL","offers":[{"title":"Default Title","offer_id":47227591131309,"sku":"HM DIGITAL ORP-200","price":14500.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0767\/7666\/9357\/files\/ChatGPTImageAug15_2026_11_27_05AM.png?v=1786773468","url":"https:\/\/rinstruments.com\/products\/hm-digital-orp-200-professional-waterproof-orp-meter-digital-orp-amp-temperature-tester","provider":"Rinstruments","version":"1.0","type":"link"}