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pH Powder Calibration Solution 4.01 7.00 10.01 pH set
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PH869-2 Pen type 12cm Probe pH Temperature Digital Meter 14.00 pH Pool Aquarium Water Quality Tester
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AOK-5019_2S Wireless Weather Station In Out Thermometer w/ RCC Radio Controlled Clock 2 Sensor
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PH-031 Digital Pen Type pH Meter Tester 0.00 - 14.00 pH Range
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PH-025RE Digital pH Monitor Meter ATC 0~14.00pH Replaceable Electrode BNC Probe
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LUX-28 Digital Light Lux Meter Instrument Measurement Range 0 to 200,000 Lux Portable Auto Ranging Tool
ORP-002 Pen-type Redox Meter Digital LCD Pool Aquarium ORP Water Quality Tester with Backlight
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ORP8552 ORP Meter Pen Type Redox 999mV Waterproof IP65 Digital Water Treatment Tester
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ORP-001 Pen-type ORP Temperature Meter Redox Thermometer (°C/ °F) -1999mV~1999mV Pool Aquarium
PH-002 Waterproof pH Meter with Auto Buffer Recognition °C °F & Replaceable Electrode
PH-014 Pocket Size 0.0-14.0 pH Meter, Digital Water Quality Tester for Household Drinking Water, Swimming Pools, Aquariums, Hydroponics
Regular Price $7.99 USD
PH-0131 Digital pH / ORP mV / Temperature Meter Water Quality Tester with ATC Replaceable pH ORP Electrode Detachable Temperature
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PH-0093 Digital Pen-type pH Meter Tester Thermometer Temperature 0.00-14.00 pH range
PC-104 pH CL2 Chlorine Level Meter Water Quality Tester Monitor
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ORP-8651 3-in-1 Heavy Duty pH, mV & Temperature Meter w/ auto buffer recognition
ORP-1696 ±1999mV ORP REDOX Meter + Electrode + Power Adaptor
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ORP-1692 ORP REDOX Meter -1999 ~ 1999mV Tester Durable Accurate Measurement
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N04WF200_HD_1M Waterproof HD WiFi 8.5mm Endoscope Borescope iPad IPhone Android + 1M Cable