{"product_id":"hanna-groline-5000-us-cm-conductivity-standard","title":"Hanna GroLine 5000 µS\/cm Conductivity Standard Solution","description":"\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eHanna GroLine 5000 µS\/cm Conductivity Standard Solution provides a reliable reference point for calibrating compatible EC and TDS meters used in hydroponics, aquaponics, greenhouses, indoor gardens, and agricultural water testing. Accurate calibration helps growers confidently monitor concentrated nutrient solutions and maintain consistent feeding programs.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThis premium conductivity standard is prepared using equipment calibrated with potassium chloride NIST 2202 Standard Reference Material. It is available in multiple packaging formats, allowing growers to select the option that best matches their testing frequency and calibration routine.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eKey Benefits\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eHigher-range calibration standard:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Provides a 5,000 µS\/cm reference point for compatible EC and TDS meters.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eDesigned for growers:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Ideal for testing hydroponic nutrients, aquaponic water, greenhouse irrigation, and fertigation solutions.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eSupports consistent readings:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Routine calibration helps confirm that a meter is measuring conductivity correctly.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eNIST-traceable preparation:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Standardized using equipment calibrated with potassium chloride NIST 2202 Standard Reference Material.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eQuality-controlled formulation:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Prepared with deionized water for analytical use and precision laboratory equipment.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eDye-free solution:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Contains no added dyes that could stain sensitive probe components.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eMultiple format options:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Choose the packaging style that best fits occasional or routine calibration needs.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003ePortable and practical:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Suitable for grow rooms, greenhouses, testing stations, and field use.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan\u003eProduct Specifications\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eManufacturer:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Hanna Instruments\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eProduct line:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e GroLine\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eSolution type:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Conductivity calibration standard\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eConductivity value:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 5,000 µS\/cm at 25°C\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eEquivalent value:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 5.00 mS\/cm at 25°C\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eTraceability:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Standardized using a conductivity meter calibrated with potassium chloride NIST 2202 SRM\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003ePreparation water:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Deionized water for analytical use in accordance with ISO 3696\/BS 3978\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eFormulation:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Dye-free\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eAvailable formats:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Bottle and single-use sachet options\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eIntended instruments:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Compatible EC and TDS meters that support a 5,000 µS\/cm calibration point\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eConductivity changes with temperature. The stated reference value of 5,000 µS\/cm applies at 25°C. Follow the instrument manufacturer’s temperature-compensation and calibration instructions for the most accurate results.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eWhy Calibrate an EC or TDS Meter?\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eEC meters measure the electrical conductivity of a solution to help growers evaluate the concentration of dissolved ionic material. Compatible TDS meters use conductivity readings and a programmed conversion factor to estimate dissolved solids in parts per million.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eRoutine calibration helps confirm that the meter is interpreting conductivity correctly. Reliable measurements make it easier to prepare repeatable nutrient solutions, compare reservoir readings, recognize unexpected changes, and adjust feeding programs with greater confidence.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eA 5,000 µS\/cm standard is especially useful for compatible meters operating within higher conductivity ranges or measuring concentrated nutrient solutions. Confirm that the instrument supports this calibration point before use.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eHow to Use\u003c\/span\u003e\u003c\/h3\u003e\n\u003col start=\"1\"\u003e\n\u003cli\u003e\u003cspan\u003eConfirm that the meter supports calibration at 5,000 µS\/cm or 5.00 mS\/cm.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eAllow the meter, conductivity probe, and calibration solution to reach the same stable temperature.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eRinse the probe with distilled or deionized water.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eGently shake off excess water without touching or damaging the sensing surfaces.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePour a fresh portion into a clean calibration vessel or open a single-use sachet, depending on the selected variant.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eImmerse the required sensing area in the calibration solution.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eGently move or tap the probe to release trapped air bubbles.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eFollow the meter manufacturer’s instructions to complete calibration.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eRinse the probe after calibration.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eDiscard any solution that has contacted the probe.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eNever return used calibration solution to its original container.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eCompatible Applications\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eHanna GroLine 5000 µS\/cm Conductivity Standard Solution is suitable for compatible meters used in:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eHydroponic nutrient reservoirs\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eAquaponic systems\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eGreenhouses\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eIndoor gardens\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eCoco coir and soilless production\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eFertigation systems\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eIrrigation-water testing\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eConcentrated nutrient-solution preparation\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eAgricultural water-quality monitoring\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePortable EC and TDS testing\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eAlways verify that the instrument uses a 5,000 µS\/cm or 5.00 mS\/cm calibration point before purchasing.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eChoosing a Format\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eBottle variants are convenient for growers who calibrate meters regularly or maintain multiple instruments. Pour only the amount needed into a separate, clean calibration vessel to help protect the remaining solution from contamination.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eSingle-use sachets provide a fresh portion for each calibration session and are convenient for occasional use, field testing, or carrying with portable meters. Open a sachet immediately before use and discard the remaining solution afterward.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eStorage and Handling\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eStore the calibration solution tightly sealed in a clean, dry location away from direct sunlight and extreme temperatures. Keep sachets sealed until immediately before use and close bottle containers promptly after dispensing.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eHanna formulates its conductivity standards for an expiration period of up to five years from the date of manufacture when unopened. Always follow the expiration date printed on the selected product. Do not use solution that is expired, visibly contaminated, or stored in damaged packaging.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eImportant Usage Notes\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eSelect the desired format from the available product variants.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eDo not dilute the calibration standard.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eNever return used solution to its original container.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eDo not combine fresh and previously used calibration solution.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eUse a clean calibration vessel when working with a bottle.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eTreat opened sachets as single-use products.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eA Certificate of Analysis is not included with individually sold sachets.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eDo not add calibration solution to a nutrient reservoir.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eConfirm meter compatibility with the 5,000 µS\/cm calibration point.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eFollow the meter manufacturer’s instructions for temperature compensation and calibration.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Hanna Instruments","offers":[{"title":"20 mL Sachet","offer_id":51482879492260,"sku":"HI70039G","price":2.29,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1298\/4199\/files\/GroLine-5000-uS-cm-Conductivity-Standard-Sachets_-20-mL-117508583.webp?v=1789056092","url":"https:\/\/www.gardensupplyguys.com\/products\/hanna-groline-5000-us-cm-conductivity-standard","provider":"GARDEN SUPPLY GUYS","version":"1.0","type":"link"}