{"product_id":"aqua-master-tools-e50-handheld-digital-ec-temperature-meter-waterproof-hydroponic-nutrient-fluid-conductivity-tester","title":"Aqua Master Tools - E50 Handheld Digital EC \u0026 Temperature Meter – Waterproof Hydroponic Nutrient \u0026 Fluid Conductivity Tester","description":"\u003csection\u003e\n\u003ch3\u003eAqua Master Tools - E50 Handheld Digital EC \u0026amp; Temperature Meter – Waterproof Hydroponic Nutrient \u0026amp; Fluid Conductivity Tester\u003c\/h3\u003e\n\u003cp\u003eTake absolute control over your commercial fertilizer mixing lines and monitor precise salt concentrations with the Aqua Master Tools E50 Handheld Digital EC \u0026amp; Temperature Meter. Custom-engineered for the harsh, moisture-heavy conditions of commercial vertical indoor farms, large-scale greenhouse ranges, and municipal water treatment plants, this rugged testing pen provides lightning-fast, high-accuracy telemetry for both electrical conductivity (EC) and solution temperature. Standard pocket meters frequently fail due to water log corrosion or physical stress from falling into mixing vats. The Aqua Master Tools E50 eliminates this operational vulnerability with a robust, lightweight 102g chassis wrapped in a comfortable rubber ergonomic grip and fortified with a certified \u003cstrong\u003eIP67 dust-tight and waterproof rating\u003c\/strong\u003e. Engineered with positive buoyancy, the unit floats safely on the water's surface, making it easy to fish out of a deep tank if accidentally dropped. Utilizing a streamlined 1-point automatic calibration routine pre-programmed for standard 1413 μS\/cm (or 1.4 mS\/cm) reference solutions, this field-ready device cuts out tedious tuning screws and complex configuration menus, keeping your accuracy tight with a simple button click. Outfitted with heavy-duty internal circuitry, the E50 reads from 0 to 19.9 mS\/cm and tracks fluid temperatures from 0°C to 50°C, displaying clean data instantly on its clear digital screen. By integrating a modular, user-replaceable electrode cartridge system, this professional meter saves you money—letting you swap out a worn sensor probe down the road instead of throwing away the entire tool. Arriving completely ready to work with a secure protective cap, convenient wrist cord, and pre-installed batteries, this durable instrument gives commercial growers and facility managers a bulletproof solution for safeguarding daily crop nutrition profiles.\u003c\/p\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003eBest For:\u003c\/strong\u003e Daily electrical conductivity monitoring in hydroponic reservoirs, testing runoff strength in commercial coco coir setups, checking greenhouse water supply systems, and industrial fluid analysis across multiple commercial sectors.\u003c\/p\u003e\n\u003ch3\u003eKey Features \u0026amp; Technical Advancements\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual Telemetry EC \u0026amp; Thermal Analysis:\u003c\/strong\u003e Monitors fluid electrical conductivity (0 to 19.9 mS\/cm) and solution temperature (0°C to 50°C) simultaneously, helping you keep nutrient strength inside the sweet spot.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuoyant IP67 Waterproof Architecture:\u003c\/strong\u003e Completely dust-tight and waterproof down to 1 meter; engineered to float on the water's surface so you never lose it in deep storage tanks or mixing reservoirs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRapid 1-Point Automatic Calibration:\u003c\/strong\u003e Features built-in digital auto-tuning calibrated to standard 1413 μS\/cm reference fluid, keeping your readings sharp and reliable without manual adjustment tools.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eErgonomic Non-Slip Rubber Grip:\u003c\/strong\u003e Outfitted with an integrated rubberized casing that provides excellent traction and comfort in wet environments, reducing slips and drop risks during busy facility rounds.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModular Replaceable Probe Assembly:\u003c\/strong\u003e Designed with an easy-swap replaceable electrode socket that lets you change out aged or broken sensors in seconds, significantly extending the life of your meter body.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSecure Storage Cap \u0026amp; Safety Lanyard:\u003c\/strong\u003e Includes a heavy-duty protective cap and an attached wrist cord to keep the tool safe, accessible, and ready for deployment anywhere on the cultivation floor.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eProduct Technical Specifications Matrix\u003c\/h3\u003e\n\u003ctable style=\"border-collapse: collapse; width: 100%; text-align: left;\" cellpadding=\"5\" border=\"1\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"background-color: #f2f2f2;\"\u003e\n\u003cth\u003eSystem, Electrical, \u0026amp; Physical Parameters\u003c\/th\u003e\n\u003cth\u003eEngineering Metric \/ Design Detail\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand \u0026amp; Equipment Line\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAqua Master Tools \/ Precision Handheld Meter Series\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel Designation Code\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eE50 EC \u0026amp; Temp Combo Pen Tester\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eConductivity Operational Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0 to 19.9 mS\/cm Full-Spectrum Electrical Analysis\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eThermal Operational Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0°C to 50°C (32°F to 122°F Target Liquid Envelope)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDigital Reading Resolution\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.1 mS\/cm Increments | 0.1°C Increments\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSystem Reading Accuracy Tolerances\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e± 2% EC Full-Scale | ± 0.5°C System Calibration Profile\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAutomatic Calibration Settings\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDigital 1-Point Auto Tuning via 1413 μS\/cm (1.4 mS\/cm) Reference Liquid\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWaterproofing \u0026amp; Ingress Grading\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIP67 Certified Dust-Tight \u0026amp; Submersible \/ Positive Buoyancy Floating Profile\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProbe Core Design Architecture\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUser-Replaceable Modular Conductivity Sensor Cartridge\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePhysical Unit Dimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e22cm (Length) x 4cm (Width) x 4cm (Thickness)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNet Instrument Weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e102 Grams (Ultra-Lightweight Ergonomic Construction)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIncluded Power Source Package\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eButton Cell Operational Battery Array Pre-Installed inside Housing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eAdvanced Nutrient Delivery \u0026amp; Substrate Conditioning Tips\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePreventing Tip Burn and Nutrient Toxicity with Precision EC:\u003c\/strong\u003e Giving your plants too many mineral salts causes toxic build-ups, leading to root stress and curled, crispy leaf tips. When preparing liquid fertilizers, use the Aqua Master Tools E50 to confirm the exact strength of your mix. Keep young seedlings or newly rooted cuttings in a light 0.6 to 1.0 mS\/cm range, mid-stage vegetative plants around 1.2 to 1.6 mS\/cm, and heavy-feeding flowering crops between 1.8 to 2.5 mS\/cm depending on your genetics and light intensity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptimizing Substrate Health and Irrigation Feed Delivery:\u003c\/strong\u003e Protect your root zones by ensuring your liquid feeds match the specific substrate conditions your crops need. For optimal root health and fast nutrient uptake, combine your E50 measurements with a high-porosity 70\/30 blend of \u003cstrong\u003eCoco Coir and Horticultural Perlite\u003c\/strong\u003e. To maintain consistent moisture levels across large benches, route your nutrient solution through lines pressurized by a heavy-duty \u003cstrong\u003ePlont PPH Submersible Pump\u003c\/strong\u003e managed by an automated digital shot-timer.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExecuting the Single-Point Digital Auto-Calibration Protocol:\u003c\/strong\u003e To keep your E50 working within its strict ±2% EC accuracy rating, run a calibration check every two weeks. Pour a small amount of fresh, unpolluted 1413 μS\/cm calibration fluid into a clean plastic cup, dip the sensor tip into the liquid, and engage the automatic 1-point calibration routine. Once the screen locks in the reading, rinse the sensor with clean water before storage. Always dump used testing fluid to prevent cross-contamination of your main calibration bottle.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafe Probe Cleaning and Maintenance Routines:\u003c\/strong\u003e Unlike pH probes, the conductivity sensor elements on the E50 are stainless steel or platinum-coated rings that do not need to stay wet during storage. However, they must be kept totally free of fertilizer crusts and oily residues. After completing your daily water checks, rinse the sensor under clean tap water. If you notice salt build-up, soak the tip in specialized digital probe cleaner or isopropyl alcohol for a few minutes, then scrub gently with a soft brush to restore perfect electrical contact.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eIdeal For (Uses)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHydroponic Reservoir \u0026amp; Runoff Monitoring:\u003c\/strong\u003e The perfect pocket pen tester for verifying mixed fertilizer strength and tracking mineral accumulation in drain runoff water.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGreenhouse Fertigation Line Management:\u003c\/strong\u003e Ideal for commercial crop facility managers who need to run fast, repeated conductivity checks across multiple mixing tanks, chemical injection channels, and water loops.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCommercial Water Quality Tracking:\u003c\/strong\u003e An exceptional field option for water treatment technicians, aquaculture facilities, and laboratory environments that require a tough, floating IP67 conductivity tester.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"Holland Forge","offers":[{"title":"Default Title","offer_id":48455130218596,"sku":"4385","price":123.9,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0713\/6487\/0244\/files\/ChatGPTImageMay24_2026_06_00_57PM.png?v=1779617081","url":"https:\/\/www.greenhousepolytunnels.com.au\/products\/aqua-master-tools-e50-handheld-digital-ec-temperature-meter-waterproof-hydroponic-nutrient-fluid-conductivity-tester","provider":"Greenhouse \u0026 Polytunnels","version":"1.0","type":"link"}