{"product_id":"apera-instruments-grostar-gs3-ec-ppm-pen-tester-gen-ii","title":"Apera GroStar GS3 EC\/ppm Pen Tester Gen II | Titanium Sensor, TruRead, Replaceable Probe","description":"\u003ch2\u003eApera GroStar® GS3 EC\/ppm Pen Tester (Gen II) — Professional Nutrient Monitoring for Growers\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eApera GroStar GS3 Gen II\u003c\/strong\u003e is a premium EC\/ppm pen tester built specifically for growers who need fast, reliable nutrient solution monitoring. Measuring \u003cstrong\u003eEC, 500 ppm, 700 ppm, and temperature\u003c\/strong\u003e in a single device, the GS3 gives you the complete picture of your nutrient strength — in any grow environment, any lighting condition.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTitanium Conductivity Sensor\u003c\/strong\u003e — Durable, corrosion-resistant titanium probe delivers quick, reliable EC\/ppm readings with a long service life in nutrient-rich solutions\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplaceable Probe Design\u003c\/strong\u003e — When the probe reaches end of life, swap it out — no need to replace the entire pen and protect your investment\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTruRead™ Measurement Mode\u003c\/strong\u003e — Take readings across multiple reservoir zones or plant sites and automatically display \u003cstrong\u003eaverage, minimum, and maximum\u003c\/strong\u003e values for comprehensive nutrient mapping\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual ppm Scales\u003c\/strong\u003e — Supports both \u003cstrong\u003e500 ppm (NaCl)\u003c\/strong\u003e and \u003cstrong\u003e700 ppm (KCl)\u003c\/strong\u003e conversion factors to match your preferred nutrient line and feeding chart\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2-Point Automatic Calibration\u003c\/strong\u003e — Simple workflow with electrode condition display for real-time probe health monitoring\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3-Color Backlit LCD\u003c\/strong\u003e — Clear readings in any lighting; color-coded by mode for instant status recognition\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrower-Optimized Design\u003c\/strong\u003e — Streamlined for daily use in grow rooms, greenhouses, and hydroponic systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eMeasurements\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eEC\u003c\/strong\u003e (electrical conductivity)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e500 ppm\u003c\/strong\u003e (NaCl conversion)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e700 ppm\u003c\/strong\u003e (KCl conversion)\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eTemperature\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cp\u003eHydroponics, aquaponics, cannabis cultivation, greenhouse growing, nutrient solution monitoring, reservoir management, water treatment, and general EC\/TDS testing.\u003c\/p\u003e\n\n\u003ch3\u003eWhy GroStar GS3?\u003c\/h3\u003e\n\u003cp\u003eMost EC pens lock you into a single ppm scale and force full replacement when the probe ages. The GS3 offers \u003cstrong\u003edual ppm scales (500 \u0026amp; 700)\u003c\/strong\u003e for universal compatibility with any nutrient line, plus a \u003cstrong\u003ereplaceable titanium probe\u003c\/strong\u003e that keeps your meter running season after season. Add \u003cstrong\u003eTruRead™\u003c\/strong\u003e multi-point averaging and you have the most grower-intelligent EC pen in its class.\u003c\/p\u003e","brand":"APERA Instruments","offers":[{"title":"Default Title","offer_id":44109562314839,"sku":"GS3","price":114.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1555\/0581\/files\/gs3_ec-500ppm_screen.avif?v=1786055831","url":"https:\/\/getultimatenow.com\/products\/apera-instruments-grostar-gs3-ec-ppm-pen-tester-gen-ii","provider":"Get Ultimate Now ","version":"1.0","type":"link"}