{"product_id":"3-in-1-digital-tds-water-quality-tester-handheld-meter-pen","title":"3-in-1 Digital TDS Water Quality Tester – Handheld Meter Pen","description":"\n\u003ch2\u003e3-in-1 Digital Water Quality Tester – TDS, Temperature \u0026amp; Conductivity Meter\u003c\/h2\u003e\n\u003cp\u003eWondering how pure your drinking water really is? This compact, handheld \u003cstrong\u003e3-in-1 Water Quality Monitor\u003c\/strong\u003e measures \u003cstrong\u003eTotal Dissolved Solids (TDS), electrical conductivity, and water temperature\u003c\/strong\u003e in seconds — giving you instant, accurate insight into your water's purity. Whether you're testing tap water, filtered water, aquarium water, or a home water softener system, this pocket-sized pen makes monitoring effortless.\u003c\/p\u003e\n\u003cp\u003eMade in Mainland China.\u003c\/p\u003e\n\n\u003ch3\u003eWhy You'll Love It\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e3-in-1 Measurement:\u003c\/strong\u003e Simultaneously reads TDS (0–9999 ppm), conductivity (0–9999 µS\/cm), and temperature (0°C–99°C \/ 32°F–212°F) — all in one slim pen.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUltra-Lightweight (70g):\u003c\/strong\u003e Third-generation upgraded design — the lightest portable TDS instrument in its class. Slips easily into a pocket or bag.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e5-Second Readings:\u003c\/strong\u003e Delicate bare sensing elements deliver fast, stable results. Just dip the tip and read.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAutomatic Temperature Compensation (ATC):\u003c\/strong\u003e Automatically normalizes readings to the standard 25°C value, ensuring accuracy regardless of water temperature.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLong Battery Life:\u003c\/strong\u003e High-capacity DC 3V (230mAh) button battery — designed to last \u003cem\u003eover 5 years\u003c\/em\u003e of regular use.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAuto Shut-Off:\u003c\/strong\u003e Conserves battery automatically when not in use.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSmart Design:\u003c\/strong\u003e The pen tip fits directly into standard drinking bottle mouths; the pen cap doubles as a small liquid container for testing — no separate cup needed.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEasy to Clean:\u003c\/strong\u003e Removable cap for quick probe cleaning after each use.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh Accuracy:\u003c\/strong\u003e ±2% measurement accuracy for reliable, consistent results.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eProduct Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSize\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e16.2 × 2.9 × 1.5 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e~70 g\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePlastic\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eColor\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eWhite\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTDS Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0 – 9999 ppm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eConductivity Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0 – 9999 µS\/cm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTemperature Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0°C – 99°C (32°F – 212°F)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAccuracy\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e±2%\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBattery\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDC 3V, 230mAh button cell (included)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAuto Shut-Off\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eATC (Auto Temp Compensation)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eWhat's in the Box\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1× 3-in-1 Water Quality Tester Pen\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003ePrecautions\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eDo not submerge the entire instrument in water — dip only the probe tip.\u003c\/li\u003e\n  \u003cli\u003eKeep away from high heat and direct sunlight when storing.\u003c\/li\u003e\n  \u003cli\u003eAvoid dropping or applying heavy pressure to the device.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eRelated Products You May Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/1pcs-multifunctional-divided-tea-bag-organizer-paper-plate-dispenser-wood-station-design-coffee-pod-holder\"\u003eMultifunctional Tea Bag \u0026amp; Coffee Pod Organizer\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/100pcs-rubber-pourer-cap-winte-bottle-pour-spout-cover-pour-spouts-caps-bottles-rubber-caps-pourers-dust-covers-caps\"\u003e100pcs Rubber Bottle Pour Spout Cover \u0026amp; Dust Caps\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/1pcs-mini-with-screw-cap-wine-bottle-transparent-small-whiskey-decanter-50ml-spirit-alcohol-liquor-glass-bottle\"\u003eMini 50ml Glass Bottle with Screw Cap\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.osha.gov\/hand-power-tools\" target=\"_blank\" rel=\"noopener\"\u003eOSHA guidance on hand and power tools\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What does this 3-in-1 water tester actually measure?\u003c\/h4\u003e\n\u003cp\u003eA: This digital water quality pen measures three key parameters simultaneously: \u003cstrong\u003eTotal Dissolved Solids (TDS)\u003c\/strong\u003e in ppm (0–9999 ppm), \u003cstrong\u003eelectrical conductivity\u003c\/strong\u003e in µS\/cm (0–9999 µS\/cm), and \u003cstrong\u003ewater temperature\u003c\/strong\u003e in Celsius or Fahrenheit (0°C–99°C). Together, these readings give you a comprehensive picture of your water's purity and mineral content.\u003c\/p\u003e\n\u003ch4\u003eQ: Is this TDS meter suitable for testing home drinking water and aquariums?\u003c\/h4\u003e\n\u003cp\u003eA: Yes! This handheld TDS meter is ideal for testing \u003cstrong\u003etap water, filtered\/purified water, bottled water, aquariums, hydroponics systems, swimming pools, and home water softener output\u003c\/strong\u003e. The lower the TDS reading, the lower the concentration of dissolved minerals and salts — making it easy to assess whether your filter or softener is working effectively.\u003c\/p\u003e\n\u003ch4\u003eQ: Does the battery come included?\u003c\/h4\u003e\n\u003cp\u003eA: Yes, the DC 3V 230mAh button cell battery is included. Thanks to the high-capacity battery and the automatic shut-off feature, the battery is engineered to last over 5 years under regular use.\u003c\/p\u003e\n\u003ch4\u003eQ: How do I use this water quality pen?\u003c\/h4\u003e\n\u003cp\u003eA: Simply remove the cap, dip the probe tip into the water sample (do not fully submerge the pen), and wait approximately 5 seconds for a stable reading to appear on the digital display. The automatic temperature compensation feature will adjust the reading to the 25°C standard for accurate results. Rinse and dry the probe after each use.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What does this 3-in-1 water tester actually measure?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This digital water quality pen measures three key parameters simultaneously: Total Dissolved Solids (TDS) in ppm (0–9999 ppm), electrical conductivity in µS\/cm (0–9999 µS\/cm), and water temperature in Celsius or Fahrenheit (0°C–99°C). 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