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【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.
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【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.
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【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.
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【Compact & Portable Design】Pocket-size design allows easy carrying for testing anytime, anywhere. Suitable for home, travel, and outdoor use.
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【Multi-Purpose Water Testing】Ideal for drinking water, swimming pools, aquariums, hydroponics, RO systems, and other environments requiring pH monitoring.
Safebros 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
Original price was: $35.00.$19.99Current price is: $19.99.
OVERVIEW
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100% brand new and high quality
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Calibration Method: 2 points automatic calibration
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Probe Type: Precision glass bulb electrode
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Display: LCD Digital
Specifications:
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Accuracy: 0.01
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Resolution: 0.01
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Measuring Range: 0.00~14.00
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Operating Temperature: 0~80°C
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Power Supply: 2*1.5V Batteries
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Size:155*29*16mm
Package list:
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1*PH tester with opp bag
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1× pouches of calibration buffer solution (4.0 & 6.86)
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1x instruction manual ( English)
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1x AG 13 button cell batteries (included)
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1× pouches of calibration buffer solution (4.0 & 6.86)
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1x instruction manual ( English)



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