{"product_id":"digital-ph-meter-tester-pen-for-water-pre-calibrated-high-accuracy-0-01-0-14-ph-range-pocket-size-for-drinking-water-pool-aquarium-hydroponics-yellow","title":"Digital pH Meter Tester Pen for Water, Pre-Calibrated, High Accuracy ±0.01, 0–14 pH Range, Pocket Size for Drinking Water, Pool, Aquarium \u0026 Hydroponics (Yellow)","description":"\u003cp\u003e\u003cb\u003eBrand:\u003c\/b\u003e Ruolan\u003c\/p\u003e\u003cp\u003e\u003cb\u003eColor:\u003c\/b\u003e Yellow\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e \u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e【Calibration Operation Guide】 Press and hold the CAL button for 5 seconds to access calibration mode. Complete calibration by selecting the standard powders in this exact order: 6.86 → 4 → 9.18. Please refer to our full calibration instructions and tutorial video for detailed steps.\u003c\/li\u003e\n\u003cli\u003e【Pre-Calibrated for Immediate Use】The pH meter is pre-calibrated before shipment and can be used directly out of the box. For best accuracy, readings may vary slightly depending on water conditions and environment.\u003c\/li\u003e\n\u003cli\u003e【Easy Operation】Simply turn on the device, immerse the probe into the solution, gently stir, and wait for the reading to stabilize before recording the result.\u003c\/li\u003e\n\u003cli\u003e【Compact \u0026amp; Portable Design】Pocket-size design allows easy carrying for testing anytime, anywhere. Suitable for home, travel, and outdoor use.\u003c\/li\u003e\n\u003cli\u003e【Multi-Purpose Water Testing】Ideal for drinking water, swimming pools, aquariums, hydroponics, RO systems, and other environments requiring pH monitoring.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cb\u003ePart Number:\u003c\/b\u003e ILEE\u003c\/p\u003e\u003cp\u003e\u003cb\u003eEAN:\u003c\/b\u003e 0761770870742\u003c\/p\u003e\u003cp\u003e\u003cb\u003ePackage Dimensions:\u003c\/b\u003e 6.9 x 2.1 x 1.3 inches\u003c\/p\u003e","brand":"Ruolan","offers":[{"title":"Default Title","offer_id":45667537518678,"sku":"B08HLXBBK4","price":25.23,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0664\/6471\/0742\/files\/61BUiZjq72L.jpg?v=1787900645","url":"https:\/\/www.matildaco.com\/products\/digital-ph-meter-tester-pen-for-water-pre-calibrated-high-accuracy-0-01-0-14-ph-range-pocket-size-for-drinking-water-pool-aquarium-hydroponics-yellow","provider":"Matilda Co","version":"1.0","type":"link"}