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pH Buffer Calibration Kit: 2×250-mL (8.4 fl oz) Bottles, one pH 7.00 and one pH 10.00 — NIST Traceable Reference Standards

pH Buffer Calibration Kit: 2×250-mL (8.4 fl oz) Bottles, one pH 7.00 and one pH 10.00 — NIST Traceable Reference Standards

$17.99

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pH Buffer Calibration Solution 2-Pack — 1 Gallon Each: pH 7.00 and pH 10.00 — NIST Traceable Reference Standards for All pH Meters

pH Buffer Calibration Solution 2-Pack — 1 Gallon Each: pH 7.00 and pH 10.00 — NIST Traceable Reference Standards for All pH Meters

$95.00

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pH Buffer Calibration Solution Kit 3-Pack: pH 4.00, pH 7.00, pH 10.00 Buffers — 250 ml (8.4 fl oz) Each — Color Coded — NIST Traceable for All pH Meters

pH Buffer Calibration Solution Kit 3-Pack: pH 4.00, pH 7.00, pH 10.00 Buffers — 250 ml (8.4 fl oz) Each — Color Coded — NIST Traceable for All pH Meters

$22.69

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pH Buffer Calibration Solution, pH 7.00 — 1 Gallon — NIST Traceable Reference Standards for All pH Meters — Color Coded Yellow

pH Buffer Calibration Solution, pH 7.00 — 1 Gallon — NIST Traceable Reference Standards for All pH Meters — Color Coded Yellow

$58.00

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pH Buffer Calibration Solution, pH 7.00 — 1 Quart (950 mL) — NIST Traceable Reference Standards for All pH Meters — Color Coded Yellow

pH Buffer Calibration Solution, pH 7.00 — 1 Quart (950 mL) — NIST Traceable Reference Standards for All pH Meters — Color Coded Yellow

$23.00

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pH Controller with Temperature Compensation, Dual Relay Digital pH Monitor, Professional pH Meter for Hydroponic System and Indoor Plant Grow, Aquarium, Farm Garden

pH Controller with Temperature Compensation, Dual Relay Digital pH Monitor, Professional pH Meter for Hydroponic System and Indoor Plant Grow, Aquarium, Farm Garden

$239.90

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- 8%

PH Meter for Water Hydroponics Digital PH Tester Pen 0.01 High Accuracy Pocket Size with 0-14 PH Measurement Range for Household Drinking, Pool and Aquarium

PH Meter for Water Hydroponics Digital PH Tester Pen 0.01 High Accuracy Pocket Size with 0-14 PH Measurement Range for Household Drinking, Pool and Aquarium

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PH Meter for Water Hydroponics Digital PH Tester Pen 0.01 High Accuracy Pocket Size with 0-14 PH Measurement Range for Household Drinking, Pool and Aquarium

PH Meter for Water Hydroponics Digital PH Tester Pen 0.01 High Accuracy Pocket Size with 0-14 PH Measurement Range for Household Drinking, Pool and Aquarium

$11.99

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PH Meter, Digital 4 in 1 PH EC TDS Temp Meter for Water Hydroponics, Waterproof DWC PH and EC PPM Water Tester with Backlit for Nutrients Growing, Indoor Garden, Home Brewing, Pool, Aquarium.

PH Meter, Digital 4 in 1 PH EC TDS Temp Meter for Water Hydroponics, Waterproof DWC PH and EC PPM Water Tester with Backlit for Nutrients Growing, Indoor Garden, Home Brewing, Pool, Aquarium.

$23.59

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- 5%

PH Monitor & Temperature Meter 2 in 1 Digital Water Quality Tester Sensor Test Kit with Automatic Calibration/Replaceable BNC Electrode Probe for Aquariums Hydroponics Tanks Aquaculture Laboratory

PH Monitor & Temperature Meter 2 in 1 Digital Water Quality Tester Sensor Test Kit with Automatic Calibration/Replaceable BNC Electrode Probe for Aquariums Hydroponics Tanks Aquaculture Laboratory

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pH Perfect Sensi Bloom (23-Liter (Part A))

pH Perfect Sensi Bloom (23-Liter (Part A))

$178.87

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PH Probe PH Controller Value Detect Acquisition Monitoring Professional Industrial Control Supplies for Hydroponic System

PH Probe PH Controller Value Detect Acquisition Monitoring Professional Industrial Control Supplies for Hydroponic System

$13.49

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