{"product_id":"bluelab-combo-meter-1","title":"Bluelab Combo Meter","description":"\u003cp\u003eThe Bluelab Combo Meter is a three-in-one handheld meter that measures pH, conductivity and temperature, which together govern how well plants take up nutrients. Conductivity shows how much nutrient is in a solution. pH decides how much of that nutrient the roots can absorb. Temperature influences growth rate and plant structure. Because all three sit in one compact, battery-powered unit, you can check a nutrient reservoir, a run-off sample or the water supply in one pass, wherever it sits. The meter comes two ways: with the standard Bluelab pH Probe for testing solutions, or with the Bluelab Leap pH Probe for taking pH directly from the root zone in soil and other substrates.\u003c\/p\u003e\u003cp\u003eEach measurement has its own probe, and that is where much of the meter's long-term value comes from. The conductivity\/temperature probe is calibrated at the factory and never needs calibrating, so it is ready to use straight away and only needs regular cleaning. The pH probe attaches through a BNC fitting with a quarter turn. When it reaches the end of its working life, you replace only the probe, not the whole meter. pH calibration uses two points: pH 7.0 first, then pH 4.0 when readings are expected below neutral or pH 10.0 when they are expected above it. The meter tracks the time since the last calibration and prompts a recalibration after 30 days, which takes much of the guesswork out of keeping pH readings accurate. Conductivity can be shown on several common scales and temperature in Celsius or Fahrenheit, so readings match whatever units a feed chart uses. A bright backlit display keeps the numbers easy to read. The meter runs on two AAA alkaline batteries and switches itself off after four minutes without a button press.\u003c\/p\u003e\u003cp\u003eThe standard version suits testing liquids such as reservoirs, run-off and source water. Its pH probe comes with a holder with a suction cup and is stored in a cap filled with KCl storage solution, which keeps the glass hydrated. Its BNC connection also accepts the Bluelab Soil pH Probe, so root-zone readings can be added later. The soil version pairs the same meter with the Leap pH Probe and a dibber, so pH can be taken in the substrate itself as well as in solutions. The Leap probe arrives safely stored and ready to start measuring straight away. Both versions include single-use pH 7.0 and pH 4.0 calibration solutions and KCl storage solution. The meter carries a 5-year limited warranty from the date of purchase for the original purchaser, with proof of purchase required. It is not waterproof, though it withstands occasional splashes, so wipe it dry promptly and keep it out of direct sunlight to protect the display.\u003c\/p\u003e\u003cp\u003eTo keep readings accurate over the long run, clean the conductivity probe at least once a month and rinse both probes in fresh tap water after each use. Keep the pH probe tip wet, and never rinse or soak it in RO, deionised or distilled water, because that damages the chemistry of the glass bulb.\u003c\/p\u003e","brand":"Bluelab","offers":[{"title":"pH Probe Liquid","offer_id":48083188809886,"sku":"9421024920036","price":474.99,"currency_code":"AUD","in_stock":false},{"title":"pH Probe Soil","offer_id":48083188842654,"sku":"9421024920975","price":559.99,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0709\/5261\/6094\/files\/Bluelab_Combo_Meter.png?v=1760873300","url":"https:\/\/www.hydrooasis.com.au\/products\/bluelab-combo-meter-1","provider":"Hydro Oasis","version":"1.0","type":"link"}