{"product_id":"ohaus-st10-ph-pen-meter-waterproof-0-1-ph-portable-tester","title":"Ohaus ST10 pH Pen Meter Waterproof 0.1 pH - Portable Tester","description":"\u003cp\u003eIn this review of the Ohaus ST10 pH Pen Meter the bottom line is simple: this is a compact, no-frills tester for anyone who needs reliable pH readings on the go. The meter's slim, waterproof housing and straightforward controls make it a practical pick for field work, hobby labs, greenhouse monitoring or basic water testing. The auto shutdown and protective cap help preserve battery life and the electrode, so the device offers consistent performance without complex setup. For users who want a durable, portable meter that reads to 0.1 pH, the ST10 delivers.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWaterproof housing:\u003c\/strong\u003e The sturdy plastic, waterproof case allows use around splashes and light wet conditions without worry.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePortable design:\u003c\/strong\u003e Slim pen form and integrated wrist strap make it easy to carry and test on location.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAuto shutdown:\u003c\/strong\u003e Built-in auto off preserves battery life so the meter is ready when you need it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtective safety cap:\u003c\/strong\u003e The cap shields the electrode during transport and storage to extend sensor life.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e0.1 pH resolution:\u003c\/strong\u003e Provides straightforward, readable results suitable for routine pH monitoring tasks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEconomical option:\u003c\/strong\u003e Starter pen meters are an affordable way to get accurate readings without advanced features.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThe Ohaus ST10 is best suited to gardeners, aquarium keepers, educators and field technicians who need a reliable, portable meter for routine pH checks rather than laboratory-grade analysis. Its simple operation and protective features make it practical for outdoor or workshop use where convenience and durability matter.\u003c\/p\u003e\n\u003cp\u003eThose who require advanced calibration options, laboratory precision beyond 0.1 pH, or integrated logging and connectivity should look at benchtop or higher-end portable instruments instead, as the ST10 focuses on dependable basic measurement rather than extensive feature sets.\u003c\/p\u003e\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eWaterproof, durable plastic housing provides real protection in damp environments.\u003c\/li\u003e\n\u003cli\u003eCompact pen form with wrist strap and protective cap makes for easy transport and safe storage.\u003c\/li\u003e\n\u003cli\u003eSimple operation gives quick, clear readings with 0.1 pH resolution for routine testing.\u003c\/li\u003e\n\u003cli\u003eAuto shutdown helps save battery life for sporadic field use.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDesigned as a starter pen meter, it lacks advanced calibration or logging features found on lab instruments.\u003c\/li\u003e\n\u003cli\u003eResolution limited to 0.1 pH, so it may not meet needs where finer precision is required.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eOhaus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eST10 pH Pen Meter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResolution\u003c\/td\u003e\n\u003ctd\u003e0.1 pH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHousing\u003c\/td\u003e\n\u003ctd\u003eWaterproof plastic, protective safety cap\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackage Dimensions\u003c\/td\u003e\n\u003ctd\u003e4.064 H x 22.352 L x 6.604 W cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackage Weight\u003c\/td\u003e\n\u003ctd\u003e0.55 pounds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCountry of Origin\u003c\/td\u003e\n\u003ctd\u003eChina\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe Ohaus ST10 is a solid, value-oriented pen meter for routine pH checks where portability and durability matter. It is a sensible buy for hobbyists and field users who want dependable 0.1 pH readings without complex setup, though those needing higher precision or advanced features should consider lab-grade alternatives.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eIs this meter waterproof?\u003c\/strong\u003e\u003cbr\u003eYes, the ST10 features a waterproof plastic housing designed to withstand splashes and light wet use.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat resolution does it provide?\u003c\/strong\u003e\u003cbr\u003eThe meter reads to 0.1 pH, providing clear results for routine monitoring.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes it have auto shutdown?\u003c\/strong\u003e\u003cbr\u003eYes, the built-in auto shutdown helps preserve battery life between uses.\u003c\/p\u003e","brand":"Ohaus","offers":[{"title":"Default Title","offer_id":48629867544795,"sku":"B00KY5115O","price":51.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/31TyW9bi3UL._SY445_SX342_QL70_ML2.jpg?v=1778441362","url":"https:\/\/gearmusthave.com\/products\/ohaus-st10-ph-pen-meter-waterproof-0-1-ph-portable-tester","provider":"GearMustHave","version":"1.0","type":"link"}