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PC60 Premium Multiparameter (pH/EC/TDS/Salinity/Temperature) Pocket Tester/ Meter Kit-Apera Instruments
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Apera Instruments, LLC Apera Instruments AI209-T Value Series PH20 pH Tester Combo Kit, Including The Maintenance Set, and a CalPod Solution Holder
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Apera Instruments, LLC-AI312 Apera Instruments Premium Series PH60F Flat pH Pocket Tester Kit for Surface pH Test e.g. Skin, Textiles, Paper, etc, ±0.01 pH Accuracy: Amazon.com: Industrial & Scientific
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Apera Instruments, LLC-AI312 Apera Instruments Premium Series PH60F Flat pH Pocket Tester Kit for Surface pH Test e.g. Skin, Textiles, Paper, etc, ±0.01 pH Accuracy: Amazon.com: Industrial & Scientific
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Apera Instruments SX610 Waterproof pH Pen Tester, 0.1 pH Accuracy, 0-14.0 pH Range, Suitable for Test Tube Testing, Replaceable Probe - Walmart.com
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