{"product_id":"apera-ph400s-portable-ph-meter-kit-with-glp-data-management-and-usb-output","title":"Apera PH400S Portable pH Meter Kit, with GLP Data Management and USB Output","description":"\u003cp\u003eThe Apera PH400S (AI421) is a professional handheld pH meter designed for commercial cultivation, hydroponics, and fertigation quality control. Its 201T-S combination electrode measures pH and temperature simultaneously, while automatic calibration, electrode diagnostics, and a stability indicator support reliable readings. USB connectivity enables data export and external power, and the built-in GLP logger stores timestamped measurements for quality-control records.\u003c\/p\u003e\n\n\n\u003cp\u003e• Brand: Apera Instruments\u003cbr\u003e\n• Model \/ SKU: PH400S \/ AI421\u003cbr\u003e\n• pH Range: −2.00 to 19.99 pH\u003cbr\u003e\n• Accuracy: ±0.01 pH ±1 digit\u003cbr\u003e\n• Included Electrode: 201T-S combination pH\/temperature probe\u003cbr\u003e\n• Temperature Compensation: Automatic or manual, 0–100°C\u003cbr\u003e\n• Calibration: Automatic 1–5-point calibration with buffer recognition\u003cbr\u003e\n• Data Storage: 500 GLP records with date and time stamps\u003cbr\u003e\n• Connectivity: USB data export and external power\u003cbr\u003e\n• Protection Rating: IP57 waterproof and dustproof\u003cbr\u003e\n• Power Supply: 4 × AA batteries\u003cbr\u003e\n• ORP Capability: Supported with a separately purchased compatible ORP electrode\u003c\/p\u003e\n\n\n\u003cp\u003eKey Advantage: The PH400S combines accurate pH testing with 500 timestamped records and USB data export, making it suitable for facilities that need documented nutrient-solution checks rather than relying on handwritten logs.\u003c\/p\u003e","brand":"Hydro Supply Co.","offers":[{"title":"Default Title","offer_id":68104540127268,"sku":"APRA-AI421","price":369.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0254\/3914\/1924\/files\/portable-ph-meter-kit-with-datalogger-and-usb-data-output-ai421.jpg?v=1794499906","url":"https:\/\/www.growitdepot.com\/products\/apera-ph400s-portable-ph-meter-kit-with-glp-data-management-and-usb-output","provider":"Grow It Depot","version":"1.0","type":"link"}