{"product_id":"aqua-master-tools-h600-pro-handheld-substrate-meter-soil-coco-compost-ph-and-ec","title":"Aqua Master Tools H600 Pro Handheld Substrate Meter: Soil, Coco \u0026 Compost pH and EC","description":"\u003ch2\u003eH600 Pro Soil and Substrate pH and EC Meter\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eAqua Master Tools H600 Pro Handheld Substrate Meter\u003c\/strong\u003e measures pH, EC and temperature directly in soil, compost and coco, not just in liquid. It suits gardeners checking greenhouse borders, raised beds and pots, and growers who want to know what's happening around the roots.\u003c\/p\u003e\n\u003cp\u003eTesting your feed tells you what goes in. Testing the growing medium tells you what the roots are actually sitting in, and over time the two drift apart. Fertiliser salts build up in coco and compost with every feed, raising EC and pulling pH away from where you set it. A direct reading shows the change weeks before the leaves do.\u003c\/p\u003e\n\u003cp\u003eFor gardeners, soil pH decides what will thrive where. Most vegetables do best between pH 6.0 and 7.0. Blueberries and other acid-loving plants want soil below pH 5.5. A reading before you plant tells you whether the bed needs lime, sulphur or nothing at all.\u003c\/p\u003e\n\u003cp\u003eThe meter comes with two spike probes. The \u003cstrong\u003epH substrate electrode\u003c\/strong\u003e has a glass tip inside a tough plastic body. The \u003cstrong\u003eEC substrate electrode\u003c\/strong\u003e is stainless steel and very hard to damage. Readings are accurate to \u003cstrong\u003epH ±0.1\u003c\/strong\u003e and \u003cstrong\u003eEC ±2%\u003c\/strong\u003e, with \u003cstrong\u003eautomatic temperature compensation\u003c\/strong\u003e from 0 to 50°C.\u003c\/p\u003e\n\u003cp\u003eThe probes are made for soft, moist media. Coco, compost, potting mix and grow bags are ideal. In firm or dry garden soil, water the spot and make a pilot hole with a dibber first: pushing the glass tip into stony ground can crack it.\u003c\/p\u003e\n\u003cp\u003eThe meter body is IP62 (splash resistant) and the probes are IP67 waterproof. It also accepts the standard Aqua Master Tools liquid probes, so one meter can test your watering can or reservoir too.\u003c\/p\u003e\n\u003cp\u003eIf you mostly test liquids, the \u003cstrong\u003eH600 Pro Handheld Meter\u003c\/strong\u003e comes with liquid probes fitted and is the better choice.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasures directly in the root zone\u003c\/strong\u003e: pH, EC, PPM, TDS and temperature in soil, compost, coco or liquid\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStainless steel EC spike\u003c\/strong\u003e: built for repeated use in growing media\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeparate, replaceable probes\u003c\/strong\u003e, each replaced on its own when worn\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTwo-point automatic pH calibration\u003c\/strong\u003e at 4.0 and 7.0, and \u003cstrong\u003eone-point automatic EC calibration\u003c\/strong\u003e at 1,413 µS\/cm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCalibration reminder\u003c\/strong\u003e 30 days after your last calibration\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePPM on the 700 scale\u003c\/strong\u003e, up to 1,999 PPM\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCarry case included\u003c\/strong\u003e for the greenhouse, allotment or grow room\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRuns on one 9V battery\u003c\/strong\u003e (included)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOne-year warranty\u003c\/strong\u003e on the meter and six months on the electrodes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eYou get\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1 x H600 Pro handheld meter\u003c\/li\u003e\n\u003cli\u003e1 x pH substrate electrode (BNC connector)\u003c\/li\u003e\n\u003cli\u003e1 x EC substrate electrode (small pin connector)\u003c\/li\u003e\n\u003cli\u003e1 x carry case\u003c\/li\u003e\n\u003cli\u003e1 x 9V battery\u003c\/li\u003e\n\u003cli\u003eUser manual\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHow to test soil or compost\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eSoak the pH probe in tap water for at least 12 hours before first use, and calibrate both probes.\u003c\/li\u003e\n\u003cli\u003eMake sure the medium is moist. If it's dry, water the test spot with distilled or RO water and wait a few minutes. Tap water adds its own EC and skews the result.\u003c\/li\u003e\n\u003cli\u003eMake a pilot hole in firm soil, then push the probes in to the same depth as the roots.\u003c\/li\u003e\n\u003cli\u003eHold them still until the reading settles, then rinse them clean.\u003c\/li\u003e\n\u003cli\u003eTake three or four readings across the bed or pot and use the average. One spot can mislead.\u003c\/li\u003e\n\u003cli\u003eStore the pH probe with KCl storage solution in its protective cover.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003eOrder online for home delivery, with free UK delivery on orders over £99, or use free Click \u0026amp; Collect from your local GroWell shop. If you're not sure it suits your soil or setup, call or message the team and we'll talk it through.\u003c\/p\u003e","brand":"Aqua Master Tools","offers":[{"title":"Default Title","offer_id":59224853971318,"sku":null,"price":224.99,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0630\/9301\/4772\/files\/AquaMasterToolsH600ProHandheldSubstrateMeter-Soil_Coco_CompostpHandEC.jpg?v=1793874383","url":"https:\/\/www.growell.co.uk\/products\/aqua-master-tools-h600-pro-handheld-substrate-meter-soil-coco-compost-ph-and-ec","provider":"GroWell","version":"1.0","type":"link"}