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6 $1,094.82
    • × Natural Gas Detector Gas Sniffer Gas Leak Detector LocatingNatural Gas Detector Gas Sniffer Gas Leak Detector Locating 1 × $166.62
    • × Handheld Compact Digital Humidity & Thermo HygrometerHandheld Compact Digital Humidity & Thermo Hygrometer 1 × $89.00
    • × Advanced Industrial Paint Coating & Thickness Meter Gauge with F & NF ProbesAdvanced Industrial Paint Coating & Thickness Meter Gauge with F & NF Probes 1 × $304.56
    • × Portable Non Destructive Coating Thickness Gauge Meter 1800um Magnetic InductionPortable Non Destructive Coating Thickness Gauge Meter 1800um Magnetic Induction 1 × $292.98
    • × Portable Battery Operated Sound Level CalibratorPortable Battery Operated Sound Level Calibrator 1 × $178.10
    • × Pen-Size ORP Redox Tester (–1200~1200mV) for Water QualityPen-Size ORP Redox Tester (–1200~1200mV) for Water Quality 1 × $63.56

    Subtotal: $1,094.82

    View cartCheckout

  • Water
    • Accessories
    • DO Meters
    • Moisture Meters
    • ORP Meters
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HomeWaterORP Meters

ORP Meters

Showing all 21 resultsSorted by price: low to high

  • Accessories, Instruments, ORP Meters, Water

    Replaceable ORP REDOX Electrode (50 OHM) BNC Type Connector for ORP Redox Meter

    -4% Replaceable ORP REDOX Electrode (50 OHM) BNC Type Connector for ORP Redox Meter
    Accessories, Instruments, ORP Meters, Water

    Replaceable ORP REDOX Electrode (50 OHM) BNC Type Connector for ORP Redox Meter

    0 out of 5
    (0)
    SKU: ORP-ELC-RDX-BNC
    $38.71 $40.41
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  • Instruments, ORP Meters, Water

    Pen-Size ORP Redox Tester (–1200~1200mV) for Water Quality

    -15% Pen-Size ORP Redox Tester (–1200~1200mV) for Water Quality
    Instruments, ORP Meters, Water

    Pen-Size ORP Redox Tester (–1200~1200mV) for Water Quality

    0 out of 5
    (0)
    SKU: TST-ORP-PEN-1200MV
    $63.56 $74.34
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  • Instruments, ORP Meters, Water

    Pen-size ORP Redox Tester for Water Quality, -1200~1200mV

    -36% Pen-size ORP Redox Tester for Water Quality, -1200~1200mV
    Instruments, ORP Meters, Water

    Pen-size ORP Redox Tester for Water Quality, -1200~1200mV

    No reviews
    0 out of 5
    (0)
    SKU: TST-ORP-PEN-1200MV-2
    $65.93 $103.77
    Add to cart
  • Instruments, ORP Meters

    Pen-type Redox Meter Digital LCD for Pool Aquarium ORP Water Quality

    -42% Pen-type Redox Meter Digital LCD for Pool Aquarium ORP Water Quality
    Instruments, ORP Meters

    Pen-type Redox Meter Digital LCD for Pool Aquarium ORP Water Quality

    0 out of 5
    (0)
    SKU: MTR-REDOX-POOL-ORP
    $73.66 $126.74
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  • Accessories, Instruments, ORP Meters, Water

    ORP Redox Electrode with BNC Connector 50 ohm BNC

    -27% ORP Redox Electrode with BNC Connector 50 ohm BNC
    Accessories, Instruments, ORP Meters, Water

    ORP Redox Electrode with BNC Connector 50 ohm BNC

    0 out of 5
    (0)
    SKU: ELE-ORP-BNC
    $78.71 $108.52
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  • Instruments, ORP Meters

    ORP REDOX Meter, -1999 ~ 1999mV, Durable and Accurate

    -3% ORP REDOX Meter, -1999 ~ 1999mV, Durable and Accurate
    Instruments, ORP Meters

    ORP REDOX Meter, -1999 ~ 1999mV, Durable and Accurate

    0 out of 5
    (0)
    SKU: MTR-ORP-1999MV-DGT
    $85.69 $88.52
    Add to cart
  • EC Meter, Instruments, ORP Meters, pH Meters, Salinity, TDS Meters, Water

    7-in-1 Pen Type Water Quality Tester (pH, TDS, EC, ORP, Salinity, SG, Temp)

    -24% 7-in-1 Pen Type Water Quality Tester (pH, TDS, EC, ORP, Salinity, SG, Temp)
    EC Meter, Instruments, ORP Meters, pH Meters, Salinity, TDS Meters, Water

    7-in-1 Pen Type Water Quality Tester (pH, TDS, EC, ORP, Salinity, SG, Temp)

    1 review
    0 out of 5
    (0)
    SKU: TST-WTR-7IN1-PEN
    $86.63 $113.67
    Add to cart
  • Instruments, ORP Meters

    ORP Redox Meter Tester for Aquariums, Pools, and Spa (Range: -1999~1999mV)

    -20% ORP Redox Meter Tester for Aquariums, Pools, and Spa (Range: -1999~1999mV)
    Instruments, ORP Meters

    ORP Redox Meter Tester for Aquariums, Pools, and Spa (Range: -1999~1999mV)

    0 out of 5
    (0)
    SKU: TST-ORP-AQU-POOL-SPA
    $88.61 $110.70
    Add to cart
  • ORP Meters, Water

    Digital ORP Meter IP65 Waterproof

    -44% Digital ORP Meter IP65 Waterproof
    ORP Meters, Water

    Digital ORP Meter IP65 Waterproof

    0 out of 5
    (0)
    • Waterproof Rating: IP65
    • Easy to read LCD display
    • Measuring Range: -999mV to +999mV
    SKU: 38
    $98.90 $178.02
    Add to cart
  • ORP Meters, Water

    2 in 1 Digital ORP Temperature Meter Waterproof

    -44% 2 in 1 Digital ORP Temperature Meter Waterproof
    ORP Meters, Water

    2 in 1 Digital ORP Temperature Meter Waterproof

    0 out of 5
    (0)
    SKU: 51
    $108.80 $194.85
    Add to cart
  • EC Meter, Instruments, ORP Meters, pH Meters, Salinity, TDS Meters, Water

    Bluetooth Floating Monitor for EC, Salinity, pH, ORP, and TDS

    -42% Bluetooth Floating Monitor for EC, Salinity, pH, ORP, and TDS
    EC Meter, Instruments, ORP Meters, pH Meters, Salinity, TDS Meters, Water

    Bluetooth Floating Monitor for EC, Salinity, pH, ORP, and TDS

    No reviews
    0 out of 5
    (0)
    SKU: MON-EC-PH-TDS-BT
    $118.01 $203.76
    Add to cart
  • ORP Meters, pH Meters

    3 in 1 Pen Type ORP / PH & Temperature Combo Meter W/ ATC

    -39% 3 in 1 Pen Type ORP / PH & Temperature Combo Meter W/ ATC
    ORP Meters, pH Meters

    3 in 1 Pen Type ORP / PH & Temperature Combo Meter W/ ATC

    0 out of 5
    (0)
    SKU: 126
    $138.50 $225.54
    Add to cart
  • Instruments, ORP Meters, pH Meters, Temperature, Water

    3-in-1 pH, ORP, and Temperature Combo Meter Tester with Pen Type and ATC Compensation With Extra Electrode

    -10% 3-in-1 pH, ORP, and Temperature Combo Meter Tester with Pen Type and ATC Compensation With Extra Electrode
    Instruments, ORP Meters, pH Meters, Temperature, Water

    3-in-1 pH, ORP, and Temperature Combo Meter Tester with Pen Type and ATC Compensation With Extra Electrode

    0 out of 5
    (0)
    SKU: TST-PH-ORP-TMP-CMB
    $168.10 $186.58
    Add to cart
  • Accessories, Instruments, ORP Meters, pH Meters, Temperature

    3-in-1 pH Level, mV ORP, and Temperature Redox Meter for Fish Tanks

    -10% 3-in-1 pH Level, mV ORP, and Temperature Redox Meter for Fish Tanks
    Accessories, Instruments, ORP Meters, pH Meters, Temperature

    3-in-1 pH Level, mV ORP, and Temperature Redox Meter for Fish Tanks

    0 out of 5
    (0)
    SKU: MTR-PH-ORP-TMP-FISH
    $186.32 $208.15
    Add to cart
  • Accessories, Instruments, ORP Meters, pH Meters, Water

    Digital pH / ORP Controller with Monitoring and Dosing for Water

    -23% Digital pH / ORP Controller with Monitoring and Dosing for Water
    Accessories, Instruments, ORP Meters, pH Meters, Water

    Digital pH / ORP Controller with Monitoring and Dosing for Water

    0 out of 5
    (0)
    SKU: CNT-PH-ORP-DOS
    $204.83 $265.93
    Add to cart
  • ORP Meters, pH Meters, Water

    3 in 1 High Accuracy pH / ORP / Temperature Meter

    -18% 3 in 1 High Accuracy pH / ORP / Temperature Meter
    ORP Meters, pH Meters, Water

    3 in 1 High Accuracy pH / ORP / Temperature Meter

    0 out of 5
    (0)
    SKU: 19
    $227.60 $276.03
    Add to cart
  • ORP Meters, pH Meters

    2 in 1 Digital pH & ORP Redox Controller w/ Separate Relays, Repleaceable Electrode & Calibration Solution

    -18% 2 in 1 Digital pH & ORP Redox Controller w/ Separate Relays, Repleaceable Electrode & Calibration Solution
    ORP Meters, pH Meters

    2 in 1 Digital pH & ORP Redox Controller w/ Separate Relays, Repleaceable Electrode & Calibration Solution

    0 out of 5
    (0)
    SKU: 135
    $227.60 $277.02
    Add to cart
  • ORP Meters, pH Meters, Water

    Digital 2 in 1 pH / ORP Controller With Electrodes

    -13% Digital 2 in 1 pH / ORP Controller With Electrodes
    ORP Meters, pH Meters, Water

    Digital 2 in 1 pH / ORP Controller With Electrodes

    0 out of 5
    (0)
    SKU: 17
    $247.40 $284.94
    Add to cart
  • ORP Meters, pH Meters, Salinity, TDS Meters, Water

    6 in 1 Digital Water Quality Meter pH TDS EC Salinity ORP

    -10% 6 in 1 Digital Water Quality Meter pH TDS EC Salinity ORP
    ORP Meters, pH Meters, Salinity, TDS Meters, Water

    6 in 1 Digital Water Quality Meter pH TDS EC Salinity ORP

    0 out of 5
    (0)
    SKU: 15
    $278.72 $309.69
    Add to cart
  • ORP Meters, pH Meters, Water

    Professional 3 in 1 pH / ORP / Temperature Meter

    -10% Professional 3 in 1 pH / ORP / Temperature Meter
    ORP Meters, pH Meters, Water

    Professional 3 in 1 pH / ORP / Temperature Meter

    0 out of 5
    (0)
    SKU: 23
    $319.71 $355.23
    Add to cart
  • ORP Meters, pH Meters

    Digital PH ORP (2 in 1) Controller w/ Electrodes plus CO2 & O3 Relay

    -5% Digital PH ORP (2 in 1) Controller w/ Electrodes plus CO2 & O3 Relay
    ORP Meters, pH Meters

    Digital PH ORP (2 in 1) Controller w/ Electrodes plus CO2 & O3 Relay

    0 out of 5
    (0)
    SKU: 283
    $365.42 $384.93
    Add to cart

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Onsale Products

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Top Rated Products

  • Digital Salinity Salt Meter Waterproof IP65 Digital Salinity Salt Meter Waterproof IP65
    Rated 5.00 out of 5
    $93.95 $145.35
  • Digital pH Meter Digital pH Meter
    Rated 5.00 out of 5
    $25.91 $30.82
  • 4 In 1 Digital Soil pH Meter 4 In 1 Digital Soil pH Meter
    Rated 5.00 out of 5
    $69.96 $76.35
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Recent reviews

  • 4 In 1 Digital Soil pH Meter 4 In 1 Digital Soil pH Meter
    Rated 5 out of 5
    by Andy M
  • Digital Salinity Salt Meter Waterproof IP65 Digital Salinity Salt Meter Waterproof IP65
    Rated 5 out of 5
    by Rob R
  • Digital pH Meter Digital pH Meter
    Rated 5 out of 5
    by Michael Y
Copyright 2023 Discount instruments | All prices are in AUD and include GST

Customer Service

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Recent reviews

  • 4 In 1 Digital Soil pH Meter 4 In 1 Digital Soil pH Meter
    Rated 5 out of 5
    by Andy M
  • Digital Salinity Salt Meter Waterproof IP65 Digital Salinity Salt Meter Waterproof IP65
    Rated 5 out of 5
    by Rob R
  • Digital pH Meter Digital pH Meter
    Rated 5 out of 5
    by Michael Y

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Discount Instruments
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Your Cart
Natural Gas Detector Gas Sniffer Gas Leak Detector Locating
Natural Gas Detector Gas Sniffer Gas Leak Detector Locating
Price: $166.62
- +
$166.62
Handheld Compact Digital Humidity & Thermo Hygrometer
Handheld Compact Digital Humidity & Thermo Hygrometer
Price: $89.00
- +
$89.00
Advanced Industrial Paint Coating & Thickness Meter Gauge with F & NF Probes
Advanced Industrial Paint Coating & Thickness Meter Gauge with F & NF Probes
Price: $304.56
- +
$304.56
Portable Non Destructive Coating Thickness Gauge Meter 1800um Magnetic Induction
Portable Non Destructive Coating Thickness Gauge Meter 1800um Magnetic Induction
Price: $292.98
- +
$292.98
Portable Battery Operated Sound Level Calibrator
Portable Battery Operated Sound Level Calibrator
Price: $178.10
- +
$178.10
Pen-Size ORP Redox Tester (–1200~1200mV) for Water Quality
Pen-Size ORP Redox Tester (–1200~1200mV) for Water Quality
Price: $63.56
- +
$63.56
Subtotal $1,094.82
Shipping, taxes, and discounts calculated at checkout.
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