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  • Water
    • Accessories
    • DO Meters
    • Moisture Meters
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    • pH Meters
    • Refractometers
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6 $596.87
    • × Replacement pH Electrode with Calibration Powder, 0-14 pHReplacement pH Electrode with Calibration Powder, 0-14 pH 1 × $58.61
    • × Replacement Electrode for pH Meters PHM-224, TDS-240, ECM-226Replacement Electrode for pH Meters PHM-224, TDS-240, ECM-226 1 × $50.19
    • × Replaceable Electrode for Waterproof Digital pH MeterReplaceable Electrode for Waterproof Digital pH Meter 1 × $63.56
    • × Optional ORP Electrode For Professional 6 in 1 Digital Water Quality MeterOptional ORP Electrode For Professional 6 in 1 Digital Water Quality Meter 1 × $69.20
    • × Water Quality Tester (pH, EC, TDS, Salinity, SG, Temperature)Water Quality Tester (pH, EC, TDS, Salinity, SG, Temperature) 1 × $137.71
    • × Waterproof USB Datalogger for Humidity, Temperature, and PressureWaterproof USB Datalogger for Humidity, Temperature, and Pressure 1 × $217.60

    Subtotal: $596.87

    View cartCheckout

  • Water
    • Accessories
    • DO Meters
    • Moisture Meters
    • ORP Meters
    • pH Meters
    • Refractometers
    • Salinity
    • Soil pH Meters
    • Sensors / Probes
    • TDS Meters
  • Electrical
    • EMF Meters
    • Multimeters
  • Cable Testers
    • Fibre Tester
    • Wire Trackers
    • Network Tester
  • Air
    • CO2 Meters
    • Hygrometers
    • Leak Detector
    • Manometers
    • Ozone Generator
  • Light
    • Lux Meters
    • Ring Lights / Illuminators
    • Tint Meters
    • Gloss Meters
    • PAR Meters
  • Sound
    • Sound Level Meters
  • Angle / Range
    • Protractors
    • Range Finders
    • Laser Level
    • Measurement
  • Stud / Joints / Wall
    • Stud Finders
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    • IR Thermometers
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    • Car Paint Thickness Meters
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Accessories

Showing all 24 resultsSorted by price: low to high

  • Accessories, Water

    pH Calibration Powder 3 Pack

    -29% pH Calibration Powder 3 Pack
    Accessories, Water

    pH Calibration Powder 3 Pack

    0 out of 5
    (0)
    SKU: 29
    $9.80 $13.76
    Add to cart
  • 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
    Add to cart
  • Accessories, Instruments, pH Meters, Water

    pH Electrode Probe with BNC Connector and 200cm Long Cable for PH Meter

    -13% pH Electrode Probe with BNC Connector and 200cm Long Cable for PH Meter
    Accessories, Instruments, pH Meters, Water

    pH Electrode Probe with BNC Connector and 200cm Long Cable for PH Meter

    0 out of 5
    (0)
    SKU: PH-PRB-BNC-200CM
    $42.20 $48.23
    Add to cart
  • Accessories, Instruments, pH Meters, Sensors / Probes

    Replacement Electrode for pH Meters PHM-224, TDS-240, ECM-226

    -9% Replacement Electrode for pH Meters PHM-224, TDS-240, ECM-226
    Accessories, Instruments, pH Meters, Sensors / Probes

    Replacement Electrode for pH Meters PHM-224, TDS-240, ECM-226

    0 out of 5
    (0)
    SKU: ELE-PH-REPL
    $50.19 $55.28
    Add to cart
  • Accessories, Instruments, Sensors / Probes

    Replaceable Electrode with Cap for pH Temperature Pen

    -7% Replaceable Electrode with Cap for pH Temperature Pen
    Accessories, Instruments, Sensors / Probes

    Replaceable Electrode with Cap for pH Temperature Pen

    0 out of 5
    (0)
    SKU: ELE-PH-TMP
    $54.45 $58.57
    Add to cart
  • Accessories, Instruments, pH Meters, Sensors / Probes

    Replacement pH Electrode with Calibration Powder, 0-14 pH

    -25% Replacement pH Electrode with Calibration Powder, 0-14 pH
    Accessories, Instruments, pH Meters, Sensors / Probes

    Replacement pH Electrode with Calibration Powder, 0-14 pH

    0 out of 5
    (0)
    SKU: PH-ELC-RPL-CAL
    $58.61 $78.23
    Add to cart
  • Accessories, Instruments, pH Meters, Sensors / Probes

    Accurate & Fast Combination pH Electrode with Long BNC Connector

    -26% Accurate & Fast Combination pH Electrode with Long BNC Connector
    Accessories, Instruments, pH Meters, Sensors / Probes

    Accurate & Fast Combination pH Electrode with Long BNC Connector

    0 out of 5
    (0)
    SKU: PH-ELC-CMB-LNG-BNC
    $58.94 $79.85
    Add to cart
  • Accessories, Instruments, pH Meters, Sensors / Probes

    High Accuracy pH Electrode with Calibration Powder (0-14 pH)

    -24% High Accuracy pH Electrode with Calibration Powder (0-14 pH)
    Accessories, Instruments, pH Meters, Sensors / Probes

    High Accuracy pH Electrode with Calibration Powder (0-14 pH)

    0 out of 5
    (0)
    SKU: PH-ELC-HGH-ACC-CAL
    $61.48 $80.60
    Add to cart
  • Accessories, Instruments

    Replaceable Electrode for Waterproof Digital pH Meter

    -5% Replaceable Electrode for Waterproof Digital pH Meter
    Accessories, Instruments

    Replaceable Electrode for Waterproof Digital pH Meter

    0 out of 5
    (0)
    SKU: ELE-PH-WP
    $63.56 $67.09
    Add to cart
  • Accessories, Water

    Optional ORP Electrode For Professional 6 in 1 Digital Water Quality Meter

    -35% Optional ORP Electrode For Professional 6 in 1 Digital Water Quality Meter
    Accessories, Water

    Optional ORP Electrode For Professional 6 in 1 Digital Water Quality Meter

    0 out of 5
    (0)
    SKU: 28
    $69.20 $105.75
    Add to cart
  • Accessories, Water

    Optional RS232 CD Software & USB Cable Datalogger

    -21% Optional RS232 CD Software & USB Cable Datalogger
    Accessories, Water

    Optional RS232 CD Software & USB Cable Datalogger

    0 out of 5
    (0)
    SKU: 31
    $78.56 $99.06
    Add to cart
  • 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
    Add to cart
  • Accessories, Instruments, Salinity, Temperature

    Digital Salinity and Temperature Meter for Salt Water Quality

    -33% Digital Salinity and Temperature Meter for Salt Water Quality
    Accessories, Instruments, Salinity, Temperature

    Digital Salinity and Temperature Meter for Salt Water Quality

    0 out of 5
    (0)
    SKU: SAL-TMP-WTR-DGT
    $93.85 $140.40
    Add to cart
  • Accessories, EC Meter, Instruments, pH Meters, Temperature

    3-in-1 pH, EC, and Temperature Waterproof Water Quality Tester

    -17% 3-in-1 pH, EC, and Temperature Waterproof Water Quality Tester
    Accessories, EC Meter, Instruments, pH Meters, Temperature

    3-in-1 pH, EC, and Temperature Waterproof Water Quality Tester

    0 out of 5
    (0)
    SKU: TST-PH-EC-TMP-WP
    $95.63 $114.61
    Add to cart
  • Accessories, Instruments, pH Meters

    pH Monitor Meter with ATC, 0~14pH, Power Adaptor, for Aquarium and Hydroponics

    -20% pH Monitor Meter with ATC, 0~14pH, Power Adaptor, for Aquarium and Hydroponics
    Accessories, Instruments, pH Meters

    pH Monitor Meter with ATC, 0~14pH, Power Adaptor, for Aquarium and Hydroponics

    0 out of 5
    (0)
    SKU: MTR-PH-ATC-AQU-HYD
    $98.90 $123.62
    Add to cart
  • Accessories, Electrical, Instruments

    Ultrasonic Cleaner for Denture Cleaning (45kHz, 255ML)

    -17% Ultrasonic Cleaner for Denture Cleaning (45kHz, 255ML)
    Accessories, Electrical, Instruments

    Ultrasonic Cleaner for Denture Cleaning (45kHz, 255ML)

    0 out of 5
    (0)
    SKU: CLN-ULTR-45KHZ
    $98.90 $118.70
    Add to cart
  • Accessories, Instruments, pH Meters, Sensors / Probes

    pH and Chlorine Level Water Quality Tester

    -32% pH and Chlorine Level Water Quality Tester
    Accessories, Instruments, pH Meters, Sensors / Probes

    pH and Chlorine Level Water Quality Tester

    No reviews
    0 out of 5
    (0)
    SKU: TST-PH-CHL-WTR
    $118.37 $173.86
    Add to cart
  • Accessories, EC Meter, Instruments, pH Meters, Salinity, TDS Meters, Temperature, Water

    Water Quality Tester (pH, EC, TDS, Salinity, SG, Temperature)

    -29% Water Quality Tester (pH, EC, TDS, Salinity, SG, Temperature)
    Accessories, EC Meter, Instruments, pH Meters, Salinity, TDS Meters, Temperature, Water

    Water Quality Tester (pH, EC, TDS, Salinity, SG, Temperature)

    0 out of 5
    (0)
    SKU: TST-WTR-QAUL
    $137.71 $193.86
    Add to cart
  • Accessories, Instruments, pH Meters, TDS Meters, Water

    Digital Combo pH & TDS Monitor Meter Tester Monitor ATC (0.00~14.00pH)

    -28% Digital Combo pH & TDS Monitor Meter Tester Monitor ATC (0.00~14.00pH)
    Accessories, Instruments, pH Meters, TDS Meters, Water

    Digital Combo pH & TDS Monitor Meter Tester Monitor ATC (0.00~14.00pH)

    0 out of 5
    (0)
    SKU: MET-PH-TDS-ATC
    $151.95 $211.88
    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
  • Accessories, EC Meter, Instruments, pH Meters, TDS Meters, Temperature, Water

    6-in-1 Multi-Function Meter Tester for EC, CF, TDS, pH, °C, °F

    -13% 6-in-1 Multi-Function Meter Tester for EC, CF, TDS, pH, °C, °F
    Accessories, EC Meter, Instruments, pH Meters, TDS Meters, Temperature, Water

    6-in-1 Multi-Function Meter Tester for EC, CF, TDS, pH, °C, °F

    0 out of 5
    (0)
    SKU: MTR-6IN1-EC-CF-TDS-PH-TMP
    $212.65 $243.56
    Add to cart
  • Accessories, Humidity Meters, Instruments, Temperature, Water

    Waterproof USB Datalogger for Humidity, Temperature, and Pressure

    -19% Waterproof USB Datalogger for Humidity, Temperature, and Pressure
    Accessories, Humidity Meters, Instruments, Temperature, Water

    Waterproof USB Datalogger for Humidity, Temperature, and Pressure

    0 out of 5
    (0)
    SKU: DT-LOG-USB-HMP-DGT
    $217.60 $267.12
    Add to cart
  • Accessories, Instruments, Moisture Meters, Sensors / Probes, Water

    Landtek Water Activity Meter for Food Water Activity Measurement

    -6% Landtek Water Activity Meter for Food Water Activity Measurement
    Accessories, Instruments, Moisture Meters, Sensors / Probes, Water

    Landtek Water Activity Meter for Food Water Activity Measurement

    0 out of 5
    (0)
    SKU: MET-WATR-ACTV
    $887.63 $947.27
    Add to cart

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Daily Special

Save $14.17
-12% 10x 18mm Handheld Darkfield Loupe with Flashlight

10x 18mm Handheld Darkfield Loupe with Flashlight

$106.43 $120.60
Already Sold: 0 Available: 50000
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Onsale Products

  • USB Cable with RS232 CD Software and 2.5mm Diameter Jack - For Landtek Water Activity Meter USB Cable with RS232 CD Software and 2.5mm Diameter Jack - For Landtek Water Activity Meter $78.56 $128.66
  • Gooseneck Fiber Optic Microscope Illuminator + Color Filters Gooseneck Fiber Optic Microscope Illuminator + Color Filters $536.78 $565.38
  • Auto Range Multifunction Multimeter with HD LCD Screen Digital Auto Range Multifunction Multimeter with HD LCD Screen Digital $69.29 $79.19

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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  • About Us
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  • Returns / Refunds
  • Terms & Conditions
  • Privacy Policy
  • Contact Us

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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Your Cart
Replacement pH Electrode with Calibration Powder, 0-14 pH
Replacement pH Electrode with Calibration Powder, 0-14 pH
Price: $58.61
- +
$58.61
Replacement Electrode for pH Meters PHM-224, TDS-240, ECM-226
Replacement Electrode for pH Meters PHM-224, TDS-240, ECM-226
Price: $50.19
- +
$50.19
Replaceable Electrode for Waterproof Digital pH Meter
Replaceable Electrode for Waterproof Digital pH Meter
Price: $63.56
- +
$63.56
Optional ORP Electrode For Professional 6 in 1 Digital Water Quality Meter
Optional ORP Electrode For Professional 6 in 1 Digital Water Quality Meter
Price: $69.20
- +
$69.20
Water Quality Tester (pH, EC, TDS, Salinity, SG, Temperature)
Water Quality Tester (pH, EC, TDS, Salinity, SG, Temperature)
Price: $137.71
- +
$137.71
Waterproof USB Datalogger for Humidity, Temperature, and Pressure
Waterproof USB Datalogger for Humidity, Temperature, and Pressure
Price: $217.60
- +
$217.60
Subtotal $596.87
Shipping, taxes, and discounts calculated at checkout.
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