{"product_id":"aqua-master-h600-pro-handheld-meter","title":"Aqua Master H600 Pro Handheld Meter - pH, EC, PPM \u0026 TDS Tester","description":"\u003ch2\u003eFive Readings and Swappable Probes with the Aqua Master H600 Pro Handheld Meter\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eAqua Master H600 Pro\u003c\/strong\u003e is a handheld meter that reads \u003cstrong\u003epH, EC, PPM, TDS and temperature\u003c\/strong\u003e through two separate plug-in probes, accurate to ±0.1 pH and ±2% on EC. It calibrates itself, reminds you when it's due, holds a reading on screen and comes in a carry case with a 9V battery, ready to go.\u003c\/p\u003e\n\u003ch3\u003eWhy You Need It\u003c\/h3\u003e\n\u003cp\u003eOn a pen meter, the pH and EC sensors live and die together. pH glass wears out long before an EC sensor does, so when it goes, you're replacing parts that were working fine.\u003c\/p\u003e\n\u003cp\u003eThe H600 Pro keeps them apart. The pH probe plugs in on a BNC connector (a twist-lock plug) and the EC probe on a small pin connector, so a worn probe is a quick swap, not a new meter. It also takes Aqua Master's substrate probes if you want to test straight into your media later.\u003c\/p\u003e\n\u003ch3\u003eIs the H600 Pro Right for Your Setup?\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeveral reservoirs or a busy grow room:\u003c\/strong\u003e a bigger screen, a HOLD button and probes on cables make repeat testing quicker.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTesting coco or soil directly?\u003c\/strong\u003e Choose the \u003ca href=\"https:\/\/www.onestopgrowshop.co.uk\/products\/aqua-master-h600-pro-substrate-meter\"\u003eH600 Pro Substrate Meter\u003c\/a\u003e, which comes with spike probes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eJust want a quick pocket check?\u003c\/strong\u003e The \u003ca href=\"https:\/\/www.onestopgrowshop.co.uk\/products\/aqua-master-p100-pro-ec-ph-temp-combo-pen\"\u003eP110 Pro2 Combo Pen\u003c\/a\u003e fits in a pocket and stores dry.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHow the H600 Pro Works\u003c\/h3\u003e\n\u003cp\u003eThe meter reads both probes and shows each value at the press of a button. ATC (automatic temperature compensation) corrects readings from 0 to 50°C. pH calibrates automatically at two points (4.0 and 7.0), EC at one point (1.413 mS\/cm), and a reminder pops up 30 days after your last calibration.\u003c\/p\u003e\n\u003ch3\u003eKey Benefits\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeparate probes:\u003c\/strong\u003e replace a worn pH probe without touching the EC probe.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFive readings:\u003c\/strong\u003e pH, EC, PPM, TDS and temperature from one meter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAutomatic calibration:\u003c\/strong\u003e it recognises the buffer and sets itself for pH and EC.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHOLD button:\u003c\/strong\u003e freeze a reading so you can lift the probe and write it down.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSubstrate ready:\u003c\/strong\u003e accepts Aqua Master spike probes for testing coco, compost and grow bags.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWaterproof probes:\u003c\/strong\u003e IP67 rated, so they can be fully dunked.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCarry case included:\u003c\/strong\u003e keeps the kit together and the glass in one piece.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eContains\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1 x H600 Pro handheld meter\u003c\/li\u003e\n\u003cli\u003e1 x pH probe with BNC connector\u003c\/li\u003e\n\u003cli\u003e1 x EC probe with small pin connector\u003c\/li\u003e\n\u003cli\u003e1 x Carry case and 9V battery\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNot included: \u003ca href=\"https:\/\/www.onestopgrowshop.co.uk\/products\/aqua-master-calibration-solutions-100ml\"\u003ecalibration solutions\u003c\/a\u003e and \u003ca href=\"https:\/\/www.onestopgrowshop.co.uk\/products\/growth-technology-ph-probe-refill-storage-solution-300ml\"\u003eKCl storage solution\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eH600 Pro Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003epH\u003c\/th\u003e\n\u003ctd\u003e0.1 to 14.0 pH, ±0.1 pH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eEC\u003c\/th\u003e\n\u003ctd\u003e0.0 to 19.9 mS\/cm, ±2% of full scale\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eTDS\u003c\/th\u003e\n\u003ctd\u003e0 to 19.99 ppt\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003ePPM\u003c\/th\u003e\n\u003ctd\u003e0 to 1,999 (700 scale)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eTemperature\u003c\/th\u003e\n\u003ctd\u003e0 to 50°C, ±0.5°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eCalibration\u003c\/th\u003e\n\u003ctd\u003epH automatic 2-point (4.0 and 7.0), EC automatic 1-point (1.413 mS\/cm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eWaterproof rating\u003c\/th\u003e\n\u003ctd\u003eProbes IP67, meter IP62 (splash resistant)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003ePower\u003c\/th\u003e\n\u003ctd\u003e1 x 9V battery, included\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSize and weight\u003c\/th\u003e\n\u003ctd\u003e210 x 120 x 60mm, 430g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eWarranty\u003c\/th\u003e\n\u003ctd\u003e1 year meter, 6 months probes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eHow To Use the H600 Pro\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eSoak the pH probe:\u003c\/strong\u003e before first use, stand it in tap water for at least 12 hours.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCalibrate:\u003c\/strong\u003e pH in 7.0 then 4.0 buffer, EC in 1.413 solution. The meter recognises each and sets itself.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest:\u003c\/strong\u003e dip both probes, let the numbers settle and hit HOLD if you need to note them.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdjust:\u003c\/strong\u003e set EC first, then pH, because nutrients move pH.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStore:\u003c\/strong\u003e rinse, add a few drops of KCl storage solution to the pH probe cap and keep the meter dry.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cstrong\u003eTop tip:\u003c\/strong\u003e Feed charts quoting PPM need care. The H600 Pro uses the 700 scale, and plenty of charts use 500, so the same tank can look 40% stronger or weaker depending on the chart. Work in EC and you'll never get caught out.\u003c\/p\u003e\n\u003ch3\u003eFAQs\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eCan I drop the H600 Pro in the reservoir?\u003c\/strong\u003e\u003cbr\u003eKeep the meter out of the water. The probes are IP67 and fully waterproof, but the meter body is IP62, which means splash resistant only.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat happens above 1,999 PPM?\u003c\/strong\u003e\u003cbr\u003eThat's the top of the PPM range on the 700 scale, roughly EC 2.8. Above that, read EC instead, which goes up to 19.9 mS\/cm.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I test coco or soil with it?\u003c\/strong\u003e\u003cbr\u003eYes, with the substrate spike probes, sold separately in our \u003ca href=\"https:\/\/www.onestopgrowshop.co.uk\/products\/aqua-master-replacement-probes\"\u003eAqua Master replacement probes\u003c\/a\u003e range.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNeed help choosing?\u003c\/strong\u003e Call our growing experts on 01782 749955 or visit One Stop Grow Shop Stoke at Fenton Trade Park.\u003c\/p\u003e\n\u003cp\u003eA meter you repair, not replace. \u003ca href=\"https:\/\/www.onestopgrowshop.co.uk\/collections\/grow-tools-slash-accessories-meters\"\u003eBrowse our full range of pH and EC meters\u003c\/a\u003e.\u003c\/p\u003e","brand":"AQUA MASTER","offers":[{"title":"Default Title","offer_id":57511634338170,"sku":null,"price":174.99,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0762\/6368\/6447\/files\/AquaMasterToolsH600ProHandheldMeter-pH_EC_PPM_TDS_Temperature.jpg?v=1793876964","url":"https:\/\/www.onestopgrowshop.co.uk\/products\/aqua-master-h600-pro-handheld-meter","provider":"One Stop Grow Shop","version":"1.0","type":"link"}