Skip to navigation Skip to content

Discount Instruments is 100% Australian Owned
All prices are in AUD and include GST.
All Orders Are Shipped From Sydney

My Account
Track Your Order
Checkout

Water
Electrical
- EMF Meters
- Multimeters
Cable Testers
Air
Light
Sound
- Sound Level Meters
Angle / Range
Stud / Joints / Wall
- Stud Finders
Temperature
Automotive
Photographic
- Body Camera

Most Popular
Wholesale
My Orders
Contact Us

Email: [email protected]

Shop Instruments

Water
Electrical
- EMF Meters
- Multimeters
Cable Testers
Air
Light
Sound
- Sound Level Meters
Angle / Range
Stud / Joints / Wall
- Stud Finders
Temperature
Automotive
Photographic
- Body Camera

Search for:

- × Telephone & LAN Cable Tester w/ LED Lighting 1 × $39.50
- × Digital ORP Meter IP65 Waterproof 1 × $98.90
Subtotal: $138.40
View cart Checkout

Water
Electrical
- EMF Meters
- Multimeters
Cable Testers
Air
Light
Sound
- Sound Level Meters
Angle / Range
Stud / Joints / Wall
- Stud Finders
Temperature
Automotive
Photographic
- Body Camera

Search
Search for:
2

Search for:

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%
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
Instruments, ORP Meters, Water
Pen-Size ORP Redox Tester (–1200~1200mV) for Water Quality
-15%
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~~
Add to cart
Instruments, ORP Meters, Water
Pen-size ORP Redox Tester for Water Quality, -1200~1200mV
-36%
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%
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~~
Add to cart
Accessories, Instruments, ORP Meters, Water
ORP Redox Electrode with BNC Connector 50 ohm BNC
-27%
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
Instruments, ORP Meters
ORP REDOX Meter, -1999 ~ 1999mV, Durable and Accurate
-3%
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%
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%
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%
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%
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%
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%
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%
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%
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%
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%
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%
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%
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%
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%
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%
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

Showing all 21 resultsSorted by price: low to high

- Show All Categories
- Water (139)

Daily Special

Save $14.17

10x 18mm Handheld Darkfield Loupe with Flashlight

$106.43 ~~$120.60~~

Already Sold: 0 Available: 50000

0

Onsale Products

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 $536.78 ~~$565.38~~
Auto Range Multifunction Multimeter with HD LCD Screen Digital $69.29 ~~$79.19~~

Top Rated Products

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

Discount Instruments is 100% Australian Owned and Operated.

Contact Us

Submit a Help Request

[email protected]

Customer Service

My Account
Orders
About Us
Shipping
Returns / Refunds
Terms & Conditions
Privacy Policy
Contact Us

Quick Links

Water Quality Testing
Air Quality Testing
Sound Level Testing
Cable Testing
Light Level Testing
Electrical Testing

Find It Fast

Refractometers
ORP Meters
Hygrometers
pH Meters
Soil pH Meters
TDS Meters
EMF Meters

Recent reviews

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

My Account
Orders
About Us
Shipping
Returns / Refunds
Terms & Conditions
Privacy Policy
Contact Us

Recent reviews

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

Contact Us

Submit A Request
Send Us An Email

2

2

Your Cart

Telephone & LAN Cable Tester w/ LED Lighting

Telephone & LAN Cable Tester w/ LED Lighting

Price: $39.50

- +

$39.50

Digital ORP Meter IP65 Waterproof

Digital ORP Meter IP65 Waterproof

Price: $98.90

- +

$98.90

Subtotal $138.40

Shipping, taxes, and discounts calculated at checkout.

View Cart Continue Shopping Checkout