{"title":"Hanna Instruments","description":"\u003cp\u003eHanna Instruments GroLine meters, testers, monitors, and the calibration, cleaning, and storage solutions that keep them reading true — pH, EC\/TDS, soil, and nutrient monitoring for indoor and greenhouse growing.\u003c\/p\u003e","products":[{"product_id":"hanna-groline-waterproof-hydroponic-ph-tester-hi98118","title":"Hanna GroLine Waterproof Hydroponic pH Tester (HI98118)","description":"\u003cp\u003eA pocket-sized pH and temperature tester built for hydroponic nutrient solution. The HI98118 reads 0.00 to 14.00 pH with 0.01 resolution, and its waterproof body is designed to float if dropped in a reservoir.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAutomatic one- or two-point calibration (pH 4.01 \/ 7.01 \/ 10.01), or one-point Quick Cal calibration\u003c\/li\u003e\n\u003cli\u003eRenewable cloth junction — pull out 1\/8\" to clear clogging and restore fast, stable readings\u003c\/li\u003e\n\u003cli\u003eBuilt-in temperature sensor with automatic temperature compensation\u003c\/li\u003e\n\u003cli\u003eStability indicator, low-battery indicator, and battery % shown at startup\u003c\/li\u003e\n\u003cli\u003eTwo-button operation; auto-off after 8 min, 60 min, or disabled\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":54278725927195,"sku":"HI98118","price":99.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0708\/6768\/1563\/files\/hi98118_30d98afe-8eff-4479-99ae-4d6ff3d5e4f3.jpg?v=1792257000"},{"product_id":"hanna-groline-waterproof-ec-tds-tester-hi98318","title":"Hanna GroLine Waterproof EC\/TDS Tester (HI98318)","description":"\u003cp\u003eA waterproof pocket tester for nutrient strength: the HI98318 measures EC from 0.00 to 6.00 mS\/cm and TDS up to 3000 ppm (0.5 conversion) or 4000 ppm (0.7 conversion), with 0.01 mS\/cm resolution and ±2% full-scale accuracy.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAutomatic one-point calibration at 1.41 mS\/cm, or one-point Quick Cal calibration\u003c\/li\u003e\n\u003cli\u003eExposed temperature sensor for fast, temperature-compensated readings\u003c\/li\u003e\n\u003cli\u003eSelectable 0.5 (500 CF) or 0.7 (700 CF) EC-to-TDS conversion factor\u003c\/li\u003e\n\u003cli\u003eWaterproof housing; CR2032 battery lasts about 250 hours\u003c\/li\u003e\n\u003cli\u003eSupplied with Quick Cal calibration sachets, storage cap, and carrying case\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":54278734774555,"sku":"HI98318","price":109.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0708\/6768\/1563\/files\/hi98318_aa6a138d-726b-4ead-b2f9-a81065c8ed70.jpg?v=1792257106"},{"product_id":"hanna-soil-test-direct-soil-conductivity-tester-hi98331","title":"Hanna Soil Test Direct Soil Conductivity Tester (HI98331)","description":"\u003cp\u003eThe Soil Test measures electrical conductivity and temperature directly in soil — no slurries, no sample prep. Its 114 mm (4.5\") stainless steel penetration probe goes straight into potting mix, coco, or garden soil so you can check the root zone where it matters.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eEC range 0 to 4000 µS\/cm (0.00 to 4.00 mS\/cm) with 1 µS\/cm resolution\u003c\/li\u003e\n\u003cli\u003eSingle-button operation with automatic one-point calibration at 1413 µS\/cm\u003c\/li\u003e\n\u003cli\u003eIntegrated temperature sensor with automatic compensation\u003c\/li\u003e\n\u003cli\u003eIdeal for checking feed strength in soil and soilless media, and for monitoring salt buildup\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":54278734938395,"sku":"HI98331","price":189.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0708\/6768\/1563\/files\/hi98331_cd45d10c-6dc5-475b-979a-51f7a85df024.jpg?v=1792257129"},{"product_id":"hanna-groline-ph-7-01-calibration-buffer-500-ml","title":"Hanna GroLine pH 7.01 Calibration Buffer — 500 mL","description":"\u003cp\u003epH 7.01 is the neutral calibration point every pH meter starts from — the offset point used to anchor an accurate one- or two-point calibration. This 500 mL bottle of GroLine buffer is the economical size for growers who calibrate often.\u003c\/p\u003e\n\u003cp\u003eHanna calibration buffers are prepared to precise formulas and standardized against NIST-traceable reference standards, so your meter reads true every time you calibrate. Each container is airtight with a tamper-proof seal, and the lot number and expiration date are printed on the label. Unopened, Hanna buffers carry a 5-year shelf life.\u003c\/p\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":54278735823131,"sku":"HI7007L","price":26.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0708\/6768\/1563\/files\/hi7007l_d477f779-697b-4b7d-90ec-0caf153b6bef.jpg?v=1792257154"},{"product_id":"hanna-groline-ph-4-01-calibration-buffer-500-ml","title":"Hanna GroLine pH 4.01 Calibration Buffer — 500 mL","description":"\u003cp\u003epH 4.01 is the acidic calibration point used to set the slope in a two-point calibration — essential for accurate readings in the 5.5–6.5 range most nutrient solutions run at. This 500 mL bottle of GroLine buffer suits growers who calibrate often.\u003c\/p\u003e\n\u003cp\u003eHanna calibration buffers are prepared to precise formulas and standardized against NIST-traceable reference standards, so your meter reads true every time you calibrate. Each container is airtight with a tamper-proof seal, and the lot number and expiration date are printed on the label. Unopened, Hanna buffers carry a 5-year shelf life.\u003c\/p\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":54278739624219,"sku":"HI7004L","price":26.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0708\/6768\/1563\/files\/hi7004l_91746fe8-4e28-4ad2-872a-a139dc984f37.webp?v=1792257177"},{"product_id":"hanna-groline-ph-4-01-calibration-buffer-230-ml","title":"Hanna GroLine pH 4.01 Calibration Buffer — 230 mL","description":"\u003cp\u003epH 4.01 is the acidic calibration point used to set the slope in a two-point calibration — essential for accurate readings in the 5.5–6.5 range most nutrient solutions run at. The 230 mL bottle is the right size for smaller grows.\u003c\/p\u003e\n\u003cp\u003eHanna calibration buffers are prepared to precise formulas and standardized against NIST-traceable reference standards, so your meter reads true every time you calibrate. Each container is airtight with a tamper-proof seal, and the lot number and expiration date are printed on the label. Unopened, Hanna buffers carry a 5-year shelf life.\u003c\/p\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":54278740574491,"sku":"HI7004M","price":21.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0708\/6768\/1563\/files\/hi7004m_59dbe5c0-56c4-409b-b711-6c479b91608c.webp?v=1792257202"},{"product_id":"hanna-groline-ph-10-01-calibration-buffer-230-ml","title":"Hanna GroLine pH 10.01 Calibration Buffer — 230 mL","description":"\u003cp\u003epH 10.01 is the alkaline calibration point, used as the second point when your samples run basic, or to verify a meter across the full scale. 230 mL bottle.\u003c\/p\u003e\n\u003cp\u003eHanna calibration buffers are prepared to precise formulas and standardized against NIST-traceable reference standards, so your meter reads true every time you calibrate. Each container is airtight with a tamper-proof seal, and the lot number and expiration date are printed on the label. Unopened, Hanna buffers carry a 5-year shelf life.\u003c\/p\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":54278743687451,"sku":"HI7010M","price":21.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0708\/6768\/1563\/files\/hi7010m_10b6e7a7-7127-4dee-a283-2e4711c2ba98.webp?v=1792257234"},{"product_id":"hanna-quick-calibration-solution-230-ml","title":"Hanna Quick Calibration Solution — 230 mL","description":"\u003cp\u003eQuick Cal is Hanna's one-solution calibration for GroLine testers: a single standard with a pH value of 6.86 that also calibrates conductivity to 5,000 µS\/cm, so a pH\/EC meter calibrates both parameters in one dip. 230 mL bottle of GroLine Quick Calibration Solution (HI5036-023).\u003c\/p\u003e\n\u003cp\u003eFor GroLine meters with Quick Cal mode. Bottled solution should be replaced within about six months of opening.\u003c\/p\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":54278744146203,"sku":"HI5036-023","price":21.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0708\/6768\/1563\/files\/quickcal230_d39c41cf-179b-41f3-b5c8-d30c0efe4867.jpg?v=1792257260"},{"product_id":"hanna-quick-calibration-solution-120-ml","title":"Hanna Quick Calibration Solution — 120 mL","description":"\u003cp\u003eQuick Cal is Hanna's one-solution calibration for GroLine testers: a single standard with a pH value of 6.86 that also calibrates conductivity to 5,000 µS\/cm, so a pH\/EC meter calibrates both parameters in one dip. 120 mL bottle of GroLine Quick Calibration Solution (HI5036-012) — the handy size for occasional calibration.\u003c\/p\u003e\n\u003cp\u003eFor GroLine meters with Quick Cal mode. Bottled solution should be replaced within about six months of opening.\u003c\/p\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":54278747062555,"sku":"HI5036-012","price":16.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0708\/6768\/1563\/files\/quickcal120_1e1ffe3f-01a5-4ffb-b7e4-d603a7ae8629.jpg?v=1792257285"},{"product_id":"hanna-groline-5000-µs-cm-conductivity-standard-230-ml","title":"Hanna GroLine 5000 µS\/cm Conductivity Standard — 230 mL","description":"\u003cp\u003eThe 5000 µS\/cm (5.00 mS\/cm) conductivity standard calibrates EC\/TDS meters at the high end of the nutrient range — and it's the EC value GroLine Quick Cal mode works with. 230 mL bottle, supplied with a certificate.\u003c\/p\u003e\n\u003cp\u003eHanna conductivity standards are prepared to precise formulas and standardized against NIST-traceable references; lot number and expiration date are printed on the label.\u003c\/p\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":54278749847835,"sku":"HI7039M","price":26.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0708\/6768\/1563\/files\/hi7039m_1c39391c-9a22-420b-8830-e7f3643bd27b.jpg?v=1792257310"},{"product_id":"hanna-groline-general-purpose-cleaning-solution-120-ml","title":"Hanna GroLine General Purpose Cleaning Solution — 120 mL","description":"\u003cp\u003eNutrient salts and organic films coat pH electrodes and slow their response. Hanna's general purpose cleaning solution dissolves those deposits: soak the electrode for 15 to 20 minutes, rinse, and recalibrate. Regular cleaning is the cheapest way to extend electrode life and keep readings honest. 120 mL bottle.\u003c\/p\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":54278751355163,"sku":"HI7061S","price":16.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0708\/6768\/1563\/files\/hi7061s_a09e8311-d0e4-4378-a74c-d5165a27f04f.jpg?v=1792257335"},{"product_id":"hanna-groline-electrode-storage-solution-230-ml","title":"Hanna GroLine Electrode Storage Solution — 230 mL","description":"\u003cp\u003eStorage solution keeps the pH glass hydrated and the junction flowing between uses, minimizing clogging and organic growth so your meter responds fast and lasts longer. Add a few drops to the protective cap whenever you put a tester away — and never store an electrode in distilled or deionized water. 230 mL bottle.\u003c\/p\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":54278752567579,"sku":"HI70300M","price":21.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0708\/6768\/1563\/files\/hi70300m_a58e8f1d-06e8-4e5b-9e38-70a07cd8e49d.jpg?v=1792257361"},{"product_id":"hanna-groline-pocket-ph-ec-tds-temp-tester-hi98131","title":"Hanna GroLine Pocket pH\/EC\/TDS\/Temp Tester (HI98131)","description":"\u003cp\u003eOne pocket tester for the whole nutrient check: the HI98131 combines pH, EC\/TDS, and temperature in a single waterproof meter built for the humidity of a grow room.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThree sensors in one meter — pH electrode with extractable junction, amperometric EC\/TDS sensor, exposed temperature probe\u003c\/li\u003e\n\u003cli\u003epH range 0.00 to 14.00; EC to 6.00 mS\/cm; TDS to 3000 ppm (0.5 CF) or 3999 ppm (0.7 CF)\u003c\/li\u003e\n\u003cli\u003eAutomatic temperature compensation; temperature shown alongside pH, EC, or TDS\u003c\/li\u003e\n\u003cli\u003eStability indicator and HOLD button to freeze a reading\u003c\/li\u003e\n\u003cli\u003eBattery error prevention, battery % at startup, and selectable auto-off\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":54278753550619,"sku":"HI98131","price":249.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0708\/6768\/1563\/files\/hi98131_1e932927-43ca-4148-9066-16b02a031562.jpg?v=1792257387"},{"product_id":"hanna-groline-soil-ph-tester-hi981030","title":"Hanna GroLine Soil pH Tester (HI981030)","description":"\u003cp\u003eA pocket pH tester made for soil: the HI981030 measures pH directly in soil and soil slurries, so you can spot-check the root zone without mixing samples. Reads 0.00 to 12.00 pH with ±0.05 pH accuracy.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eConical glass tip penetrates soil for direct measurement\u003c\/li\u003e\n\u003cli\u003eOpen reference junction with removable sleeve — lift it off to clean and refresh with new bridge electrolyte\u003c\/li\u003e\n\u003cli\u003eDurable PVDF body resists chemicals and solvents, including chlorine\u003c\/li\u003e\n\u003cli\u003eSingle-button operation, large display, on-screen stability indicator\u003c\/li\u003e\n\u003cli\u003eSupplied with buffer sachets, cleaning and storage solutions, gel electrolyte, and a soil auger — everything needed to start testing\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":54278754238747,"sku":"HI981030","price":154.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0708\/6768\/1563\/files\/hi981030_997f75f5-42e1-4b76-84a2-cf096deb4cd3.jpg?v=1792257412"},{"product_id":"hanna-halo2-groline-wireless-ph-tester-for-soil-hi9810302","title":"Hanna HALO2 GroLine Wireless pH Tester for Soil (HI9810302)","description":"\u003cp\u003eThe HALO2 takes the GroLine soil pH tester wireless: readings stream over Bluetooth to the Hanna Lab App on your phone or tablet, where they can be logged, graphed, and shared. Built for spot-checking the pH of soil and soil slurries across grow media — soil, coco, rockwool, and more.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eOpen-source Bluetooth connects to the Hanna Lab App and data logging systems\u003c\/li\u003e\n\u003cli\u003eIP65 water-resistant housing for outdoor and greenhouse use\u003c\/li\u003e\n\u003cli\u003eConical glass tip for direct soil measurement; open junction with removable sleeve for easy cleaning\u003c\/li\u003e\n\u003cli\u003epH range 0.00 to 12.00 with ±0.05 pH accuracy; calibration up to three points with automatic buffer recognition\u003c\/li\u003e\n\u003cli\u003ePocket-sized with a large display and single-button operation\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":54278755451163,"sku":"HI9810302","price":199.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0708\/6768\/1563\/files\/hi9810302_da0b1c87-0903-464e-b9e8-171afa0d0025.webp?v=1792257437"},{"product_id":"hanna-groline-monitor-for-hydroponic-nutrients-hi981420","title":"Hanna GroLine Monitor for Hydroponic Nutrients (HI981420)","description":"\u003cp\u003eA wall-mounted monitor that watches your reservoir around the clock: the HI981420 continuously displays pH, EC\/TDS, and temperature from a single multiparameter probe, so nutrient drift shows up on the screen before it shows up in the plants.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eContinuous pH (0.00 to 14.00), EC (0.00 to 10.00 mS\/cm), TDS, and temperature monitoring\u003c\/li\u003e\n\u003cli\u003eGroLine multiparameter probe with built-in temperature sensor and 2 m cable included\u003c\/li\u003e\n\u003cli\u003eCalibrate pH and EC together in one dip with Quick Cal solution, or calibrate each parameter separately with standard buffers\u003c\/li\u003e\n\u003cli\u003eAutomatic temperature compensation for both pH and EC\u003c\/li\u003e\n\u003cli\u003eWall-mount design for reservoirs, fertigation stations, and grow rooms\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":54278756598043,"sku":"HI981420","price":459.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0708\/6768\/1563\/files\/hi981420_274dd9f6-83ce-440b-80ab-ca7b31f3195c.webp?v=1792257462"},{"product_id":"hanna-groline-portable-ph-ec-tds-temp-meter-hi9814","title":"Hanna GroLine Portable pH\/EC\/TDS\/Temp Meter (HI9814)","description":"\u003cp\u003eA professional portable meter for nutrient solution: the HI9814 measures pH, EC, TDS, and temperature through one multiparameter probe, in a rugged waterproof casing made for greenhouse and field work.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHI1285-7 multiparameter probe (pH\/EC\/TDS\/temperature) with DIN connector and 1 m cable included\u003c\/li\u003e\n\u003cli\u003eQuick Calibration: one solution calibrates pH and EC simultaneously, or use standard calibration with pH 4.01\/7.01 buffers and 1413 µS\/cm standard\u003c\/li\u003e\n\u003cli\u003eAutomatic temperature compensation and selectable 0.5 or 0.7 TDS conversion factor\u003c\/li\u003e\n\u003cli\u003eLarge backlit display, hold function, and battery % at startup\u003c\/li\u003e\n\u003cli\u003eCan run as a wall-mounted monitor with auto-off disabled\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":54278759219483,"sku":"HI9814","price":349.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0708\/6768\/1563\/files\/hi9814_01d88dd5-2918-4771-98b8-532d61dc4686.jpg?v=1792257486"},{"product_id":"hanna-groline-electrode-storage-solution-500-ml","title":"Hanna GroLine Electrode Storage Solution — 500 mL","description":"\u003cp\u003eStorage solution keeps the pH glass hydrated and the junction flowing between uses, minimizing clogging and organic growth so your meter responds fast and lasts longer. Add a few drops to the protective cap whenever you put a tester away — and never store an electrode in distilled or deionized water. 500 mL bottle for heavy use.\u003c\/p\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":54278764429595,"sku":"HI70300L","price":26.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0708\/6768\/1563\/files\/hi70300l_4be8a11f-d3a4-4195-b649-fcbd5128efb6.jpg?v=1792257510"},{"product_id":"hanna-groline-ph-7-01-calibration-buffer-1-gallon","title":"Hanna GroLine pH 7.01 Calibration Buffer — 1 Gallon","description":"\u003cp\u003eThe workhorse size for rooms that calibrate daily. pH 7.01 is the neutral calibration point every pH meter starts from — this 1-gallon jug of GroLine buffer keeps the calibration station stocked at the lowest cost per calibration.\u003c\/p\u003e\n\u003cp\u003eHanna calibration buffers are prepared to precise formulas and standardized against NIST-traceable reference standards, so your meter reads true every time you calibrate. Each container is airtight with a tamper-proof seal, and the lot number and expiration date are printed on the label. Unopened, Hanna buffers carry a 5-year shelf life.\u003c\/p\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":54278764495131,"sku":"HI7007-1G","price":84.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0708\/6768\/1563\/files\/groline_ph_7.01_calibration_buffer_2c_gallon_281_29.jpg?v=1792259008"},{"product_id":"hanna-quick-calibration-solution-sachets-25-20-ml","title":"Hanna Quick Calibration Solution Sachets — 25 × 20 mL","description":"\u003cp\u003eQuick Cal is Hanna's one-solution calibration for GroLine testers: a single standard with a pH value of 6.86 that also calibrates conductivity to 5,000 µS\/cm, so a pH\/EC meter calibrates both parameters in one dip — in single-use sachets (HI50036P) that are fresh every time.\u003c\/p\u003e\n\u003cp\u003eSingle-use sachets keep calibration solution factory-fresh — every calibration uses solution that has never been exposed to air or contamination. The light-blocking foil packaging protects against UV degradation, and each sachet is marked with its lot number and expiration date. Box of 25 sachets, 20 mL each.\u003c\/p\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":54278764790043,"sku":"HI50036P","price":37.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0708\/6768\/1563\/files\/quick-calibration-solution-for-groline-ph-and-ec-meters-25-x-20-ml-sachets-p656cbb3edd33acc475d12b543ff22a54.png?v=1792259024"},{"product_id":"hanna-groline-1413-µs-cm-conductivity-standard-1-gallon","title":"Hanna GroLine 1413 µS\/cm Conductivity Standard — 1 Gallon","description":"\u003cp\u003e1413 µS\/cm (1.41 mS\/cm) is the standard calibration point for EC and TDS meters. This 1-gallon jug of GroLine conductivity standard — supplied with a certificate — is the economical size for rooms that calibrate meters constantly.\u003c\/p\u003e\n\u003cp\u003eHanna conductivity standards are prepared to precise formulas and standardized against NIST-traceable references; lot number and expiration date are printed on the label.\u003c\/p\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":54278765379867,"sku":"HI7031-1G","price":109.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0708\/6768\/1563\/files\/hi7031.jpg?v=1792259010"},{"product_id":"hanna-groline-storage-solution-sachets-25-20-ml","title":"Hanna GroLine Storage Solution Sachets — 25 × 20 mL","description":"\u003cp\u003eStorage solution keeps the pH glass hydrated and the junction flowing between uses, minimizing clogging and organic growth so your meter responds fast and lasts longer. These single-use sachets (25 × 20 mL) portion it out fresh — ideal for topping up protective caps without opening a bottle. Never store an electrode in distilled or deionized water.\u003c\/p\u003e\n\u003cp\u003eSingle-use sachets keep calibration solution factory-fresh — every calibration uses solution that has never been exposed to air or contamination. The light-blocking foil packaging protects against UV degradation, and each sachet is marked with its lot number and expiration date. Box of 25 sachets, 20 mL each.\u003c\/p\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":54278765478171,"sku":"HI70300G","price":52.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0708\/6768\/1563\/files\/groline-storage-solution-25-sachets-of-20-ml-hi70300g__53245.jpg?v=1792259021"},{"product_id":"hanna-groline-ph-4-01-buffer-sachets-25-20-ml","title":"Hanna GroLine pH 4.01 Buffer Sachets — 25 × 20 mL","description":"\u003cp\u003epH 4.01 buffer in single-use sachets — the acidic point for two-point pH calibration, portioned fresh for every use. Hanna's GroLine sachet packaging follows the same naming as its HI70300G storage sachets.\u003c\/p\u003e\n\u003cp\u003eSingle-use sachets keep calibration solution factory-fresh — every calibration uses solution that has never been exposed to air or contamination. The light-blocking foil packaging protects against UV degradation, and each sachet is marked with its lot number and expiration date. Box of 25 sachets, 20 mL each.\u003c\/p\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":54278765543707,"sku":"HI70004G","price":52.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0708\/6768\/1563\/files\/groline-ph-4.01-buffer-sachets25-sachets-of-20-ml-hi70004g__79866.jpg?v=1792259013"},{"product_id":"hanna-groline-ph-7-01-buffer-sachets-25-20-ml","title":"Hanna GroLine pH 7.01 Buffer Sachets — 25 × 20 mL","description":"\u003cp\u003epH 7.01 buffer in single-use sachets — the neutral point every pH calibration starts from, portioned fresh for every use.\u003c\/p\u003e\n\u003cp\u003eSingle-use sachets keep calibration solution factory-fresh — every calibration uses solution that has never been exposed to air or contamination. The light-blocking foil packaging protects against UV degradation, and each sachet is marked with its lot number and expiration date. Box of 25 sachets, 20 mL each.\u003c\/p\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":54278766067995,"sku":"HI70007G","price":52.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0708\/6768\/1563\/files\/groline-ph-7.01-buffer-sachets25-sachets-of-20-ml-hi70007g__22597.jpg?v=1792259015"},{"product_id":"hanna-groline-1413-µs-cm-standard-sachets-25-20-ml","title":"Hanna GroLine 1413 µS\/cm Standard Sachets — 25 × 20 mL","description":"\u003cp\u003e1413 µS\/cm (1.41 mS\/cm) conductivity standard in single-use sachets — the standard EC\/TDS calibration point, portioned fresh for every use.\u003c\/p\u003e\n\u003cp\u003eSingle-use sachets keep calibration solution factory-fresh — every calibration uses solution that has never been exposed to air or contamination. The light-blocking foil packaging protects against UV degradation, and each sachet is marked with its lot number and expiration date. Box of 25 sachets, 20 mL each.\u003c\/p\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":54278768722203,"sku":"HI70031G","price":52.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0708\/6768\/1563\/files\/groline-1413-uscm-conductivity-standard-25-sachets-of-20-ml-hi70031g__42827.jpg?v=1792259017"},{"product_id":"hanna-groline-5000-µs-cm-standard-sachets-25-20-ml","title":"Hanna GroLine 5000 µS\/cm Standard Sachets — 25 × 20 mL","description":"\u003cp\u003e5000 µS\/cm (5.00 mS\/cm) conductivity standard in single-use sachets — the high-range EC calibration point, and the EC value GroLine Quick Cal mode works with. Portioned fresh for every use.\u003c\/p\u003e\n\u003cp\u003eSingle-use sachets keep calibration solution factory-fresh — every calibration uses solution that has never been exposed to air or contamination. The light-blocking foil packaging protects against UV degradation, and each sachet is marked with its lot number and expiration date. Box of 25 sachets, 20 mL each.\u003c\/p\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":54278771507483,"sku":"HI70039G","price":52.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0708\/6768\/1563\/files\/5000-conductivity-stnadard-hi70039g__666351.jpg?v=1792259019"}],"url":"https:\/\/ghhydro.com\/collections\/hanna-instruments.oembed","provider":"Green Harvest Hydroponics","version":"1.0","type":"link"}