{"product_id":"pg-hm-com-300-hm-digital-pro-series-pen-style-ph-tds-ec-temp-meter","title":"HM Digital Pro Series Pen style pH\/TDS\/EC\/Temp meter","description":"COM-300: Waterproof Professional Series pH\/EC\/TDS\/Temp Meter\n\nThe COM-300 is a professional grade level pH\/EC\/TDS\/Temp meter ideal for all water quality testing, hydroponics, water purification applications, wastewater regulation, aquaculture, colloidal silver, labs \u0026amp; scientific testing, pools \u0026amp; spas, ecology testing, boilers \u0026amp; cooling towers, water treatment and more.\n\nFeatures\nMeasures Potential Hydrogen (pH), Electrical Conductivity (EC), Total Dissolved Solids (TDS), and Temperature\nFive scales: pH, µS, mS, ppm 0.5 (NaCl) Scale \u0026amp; 0.7 (442™) Scale\nAutomatic Temperature Compensation (ATC) using three temperature coefficients\nWaterproof housing (IP-67 rating)\nDigital Calibration (push button) to any point within the meter’s range\nAuto-off function, data-hold function and low-battery indicator\nDisplay: large and easy-to-read LCD screen includes simultaneous temperature reading\nReplaceable Sensor (model SP-C3)\nFactory Calibrated (pH\/EC\/TDS)\nIncludes translucent cap, 2 (AAA) alkaline batteries, pH 4 \u0026amp; 7 calibration solutions, pH storage solution and lanyard\n\nSpecifications\npH Range: 0 – 14 pH\nEC Range: 0 – 9990 µS; 0 – 9.99 mS\nTDS Range: 0 – 8560 ppm (0.7 Scale); 0 – 5000 ppm (0.5 Scale)\nTemperature Range: 0-55 °C; 32-130°F\nResolution:\npH: 0.1pH\nEC 0 – 999 : 1µS ; 1000 – 9990 : µS ; 0- 9.99 mS :0.01 mS\nTDS 0 – 999 : 1ppm \/ 1000 – 9990: 10 ppm\nTemperature 0.1 °C\/°F\nAccuracy: +\/- 2%\nEC to TDS Conversion Factor: Non-linear conversions for KCl, 442TM or NaCl solutions, selected by the user.\nProbe: Detachable platinum electrodes \u0026amp; pH glass sensor with reference tube electrodes\nHousing: IP-67 Waterproof (submersible; floats)\nPower source: 2 x Triple A (AAA) included\nDimensions: 18.5 x 3.4 x 3.4 cm (7.3 x 1.3 x 1.3 inches)\nWeight: 101.5g (3.6 oz)","brand":"DL Wholesale","offers":[{"title":"Default Title","offer_id":52271461597482,"sku":"HM-COM-300","price":159.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0765\/7714\/5130\/files\/download_a6952c21-7da3-44fe-a48e-1a7053b7eb92.jpg?v=1786944056","url":"https:\/\/www.perfectgardens.com\/products\/pg-hm-com-300-hm-digital-pro-series-pen-style-ph-tds-ec-temp-meter","provider":"Perfect Gardens","version":"1.0","type":"link"}