{"product_id":"hanna-groline-quick-calibration-solution","title":"Hanna GroLine Quick Calibration Solution for pH \u0026 EC Meters","description":"\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eHanna GroLine Quick Calibration Solution provides a convenient single-point standard for compatible Hanna GroLine pH and EC\/TDS meters. Its combined formulation allows supported instruments to calibrate pH and conductivity sensors using one solution, helping growers maintain dependable measurements while simplifying routine meter maintenance.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe solution provides a pH reference value of 6.86 and an electrical conductivity reference value of 5.00 mS\/cm, or 5,000 µS\/cm, at 25°C. It is designed for instruments equipped with Hanna’s Quick Cal calibration function, including compatible GroLine combination meters and monitors.\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\u003eCombined pH and EC calibration:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Provides reference values for both pH and electrical conductivity in one solution.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eSimplifies meter maintenance:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Reduces the number of separate standards needed for supported Quick Cal instruments.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eSingle-point calibration:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Designed specifically for the Quick Cal function found on compatible Hanna GroLine meters.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eReliable reference values:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Provides pH 6.86 and EC 5.00 mS\/cm at 25°C.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eHigh-quality production:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Manufactured using high-purity salts, deionized water, certified balances, Class A glassware, and temperature-controlled processes.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eTraceable packaging:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Lot number and expiration information are marked on the product packaging.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eMultiple packaging options:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Select the preferred variant before ordering.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan\u003eCalibration Values\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003epH reference value:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 6.86 at 25°C\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003epH accuracy:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e ±0.02 pH\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eEC reference 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\u003eEquivalent conductivity:\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\u003eCalibration type:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Single-point Quick Cal\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eSupported parameters:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e pH and electrical conductivity\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe meter may use the conductivity value to calibrate EC and calculate related TDS or ppm readings according to its configured conversion factor.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eCompatible Instruments\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThis solution is intended for Hanna GroLine meters, monitors, and testers that specifically support the Quick Cal function and recognize the combined pH 6.86 and EC 5.00 mS\/cm standard.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eCompatibility depends on the instrument model. Review the meter’s instruction manual before calibration. Do not assume that every Hanna pH meter, EC meter, or third-party instrument supports this combined standard.\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\u003eInspect the meter and probes for residue, salt deposits, or visible contamination.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eClean the probes with an appropriate electrode-cleaning solution when necessary.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eRinse the pH and conductivity sensors with distilled or deionized water.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePour fresh Quick Calibration Solution into a clean calibration container or open a fresh individually packaged portion.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eImmerse the sensors according to the meter manufacturer’s instructions.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eSelect the meter’s Quick Cal calibration mode.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eGently stir or move the probe to release trapped air bubbles, especially around the conductivity sensor.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eWait for the reading to stabilize and allow the instrument to complete calibration.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eRinse the probes after calibration and return them to their recommended operating or storage condition.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eAlways follow the instructions supplied with the meter, as button sequences and calibration indicators differ between models.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eBest Practices for Accurate Calibration\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eUse fresh, uncontaminated solution for every calibration session.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eAllow the solution and meter to reach a stable temperature before calibration.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eConfirm that the meter recognizes the correct Quick Cal standard.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eUse a clean container that is free from fertilizer, buffer, and cleaning-solution residue.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eNever pour used calibration solution back into the original package.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eKeep the original container tightly sealed when not in use.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eAvoid touching probe sensing surfaces with fingers or dirty tools.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eRemove air bubbles from conductivity probe openings.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eCalibrate after cleaning, extended storage, probe replacement, or whenever readings appear questionable.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eFollow the expiration and lot information printed on the selected package.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan\u003eWhen to Calibrate\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eCalibration frequency depends on how often the meter is used, the cleanliness of the samples, and the accuracy required. Consider calibrating:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eBefore an important nutrient mixing or reservoir adjustment\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eAfter cleaning the probe\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eAfter replacing a pH or conductivity electrode\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eFollowing extended meter storage\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eWhen readings become slow, unstable, or unexpected\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eAfter testing concentrated fertilizers or heavily contaminated solutions\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eAt the interval recommended in the instrument manual\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eFrequent hydroponic and greenhouse users may benefit from establishing a regular calibration schedule.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eManufacturing Standards\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eHanna Quick Calibration Solution is produced in accordance with ISO 3696 and BS 3978 standards. High-purity ingredients and controlled manufacturing processes help provide a consistent reference for supported GroLine meters.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eEach package is marked with lot and expiration information for product identification and quality control.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eImportant Usage Notes\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThis is a calibration standard. It is not a pH probe storage solution, electrode-cleaning solution, nutrient additive, or pH-adjusting product.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eDo not use the solution to raise or lower reservoir pH. Do not store pH electrodes in Quick Calibration Solution for extended periods. Use an appropriate Hanna electrode storage solution to keep compatible pH probes hydrated between uses.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eCalibration results are only valid when the meter supports the specified Quick Cal values and the solution has not been contaminated, diluted, or used beyond its expiration date.\u003c\/span\u003e\u003c\/p\u003e","brand":"Hanna Instruments","offers":[{"title":"20 mL Sachet","offer_id":51483045986468,"sku":"HI50036P-1","price":2.29,"currency_code":"USD","in_stock":true},{"title":"500 mL Bottle","offer_id":51483046019236,"sku":"HI5036-050","price":22.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1298\/4199\/products\/HANNA_-Groline-QuickCal-Calibration-Solution-Sachet_-20-mL-Hanna-Instruments-1670949377.jpg?v=1683705532","url":"https:\/\/www.gardensupplyguys.com\/products\/hanna-groline-quick-calibration-solution","provider":"GARDEN SUPPLY GUYS","version":"1.0","type":"link"}