ORP Meter HM ORP-200
Waterproof Handheld ORP Meter
Measurement Range: -999 to +1000 mV
HM ORP-200, Waterproof Handheld ORP Meter
HM Digital ORP200 pen type is ideal for all ORP testing, including anti-oxidant measurement, water purification applications, ionizers, agriculture, aquariums & aquaculture, chlorine monitoring, cooling tower disinfection, environmental testing, fruit & vegetable washing, hydroponics, metal finishing, ozone system monitoring, pharmaceutical & medical applications, pools & spas, pulp bleaching, vineyards & wineries and water treatment.
ORP Meter Features:
Measures Oxidation Reduction Potential (Redox) and Temperature
Auto-ranging calibration with digital fine tuning
Includes storage solution in a sponge embedded in a clear cap
Waterproof housing (IP-67 rating)
Simultaneous temperature display
Digital Calibration (push button)
Auto-off function, data-hold function and low-battery indicator.
Display: large and easy-to-read LCD screen includes simultaneous temperature reading.
Replaceable Sensor (model SP-O2)
Factory Calibrated: The ORP-200 meter is factory calibrated to +92 mV The meter can be easily recalibrated with digital calibration using the push buttons, rather than a screwdriver.
Includes a cap, batteries, and lanyard.
Specifications:
ORP Range: -999 to +1000 mV
Temperature Range: 0-80°C; 32-176°F
Resolution: 1 mV; Temperature resolution is 0.1°C/F
Accuracy: 0.5% (+/-2mV)
Calibration: Digital calibration by push button.
Electrode: Replaceable glass sensor and reference tube electrodes
Housing: IP-67 Waterproof (submersible; floats)
Power source: 2 x (AAA) batteries (included).
Dimensions: 18.5 x 3.4 x 3.4 cm (7.3 x 1.3 x 1.3 inches)
Weight: 96.4 g (3.4 oz).
Manufacturer: HM Digital, http://hmdigital.com/
FREE Delivery Australia Wide.
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Estimated Delivery:Jul 22 - Jul 26
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Next Day Dispatch

ORP Meter HM ORP-200
Waterproof Handheld ORP Meter
Measurement Range: -999 to +1000 mV
HM ORP-200, Waterproof Handheld ORP Meter
HM Digital ORP200 pen type is ideal for all ORP testing, including anti-oxidant measurement, water purification applications, ionizers, agriculture, aquariums & aquaculture, chlorine monitoring, cooling tower disinfection, environmental testing, fruit & vegetable washing, hydroponics, metal finishing, ozone system monitoring, pharmaceutical & medical applications, pools & spas, pulp bleaching, vineyards & wineries and water treatment.
ORP Meter Features:
Measures Oxidation Reduction Potential (Redox) and Temperature
Auto-ranging calibration with digital fine tuning
Includes storage solution in a sponge embedded in a clear cap
Waterproof housing (IP-67 rating)
Simultaneous temperature display
Digital Calibration (push button)
Auto-off function, data-hold function and low-battery indicator.
Display: large and easy-to-read LCD screen includes simultaneous temperature reading.
Replaceable Sensor (model SP-O2)
Factory Calibrated: The ORP-200 meter is factory calibrated to +92 mV The meter can be easily recalibrated with digital calibration using the push buttons, rather than a screwdriver.
Includes a cap, batteries, and lanyard.
Specifications:
ORP Range: -999 to +1000 mV
Temperature Range: 0-80°C; 32-176°F
Resolution: 1 mV; Temperature resolution is 0.1°C/F
Accuracy: 0.5% (+/-2mV)
Calibration: Digital calibration by push button.
Electrode: Replaceable glass sensor and reference tube electrodes
Housing: IP-67 Waterproof (submersible; floats)
Power source: 2 x (AAA) batteries (included).
Dimensions: 18.5 x 3.4 x 3.4 cm (7.3 x 1.3 x 1.3 inches)
Weight: 96.4 g (3.4 oz).
Manufacturer: HM Digital, http://hmdigital.com/
FREE Delivery Australia Wide.
Discover more in our FAQ
What types of industrial water treatment products do you offer?
We offer a comprehensive range of industrial water treatment solutions, including:
Filtration Systems – Effectively removes sediment, chlorine, and other impurities to enhance water purity and system longevity.
Reverse Osmosis Membranes – High-performance purification technology that eliminates dissolved solids, contaminants, and impurities for ultra-pure water.
Membrane Housings – Durable, high-pressure enclosures engineered to protect and optimize the performance of RO membranes.
Filter Cartridges – Precision-engineered sediment, carbon, and specialty filters designed to target specific contaminants for enhanced water treatment efficiency.
Chemical Dosing Systems – Precise chemical treatment for water.
Media FRP Pressure Vessels – High-pressure tanks for filtration media.
Ion Exchange Resins – Softening and demineralization solutions.
Water Instruments – pH meters, conductivity meters, and TDS testers.
Rotameter Flow Meters – Accurate flow measurement devices.
Watermaker Parts – Spare parts for marine and industrial watermakers.
Water Quality Test Kits – Portable and lab testing solutions.
How do I know which product is right for my application?
Choosing the right product depends on:
Water quality parameters (TDS, pH, hardness, contaminants)
Flow rate and pressure requirements
Industry-specific needs (food processing, pharmaceuticals, HVAC, etc.)
If you’re unsure, our technical support team can help you select the best solution.
Do you offer bulk pricing for large industrial orders?
Yes! We provide bulk discounts and custom pricing for high-volume orders. Contact us for a personalized quote.
How long does shipping take?
Shipping times depend on location and stock availability. Standard delivery is 3–7 business days for most regions. Expedited shipping options are available upon request.
What is your return policy?
We offer a 14-day return policy from the date of delivery. If you are not completely satisfied with your purchase, you can return the item for a refund or exchange, provided it meets our return conditions.
What happens if I receive a damaged or incorrect item?
If your item arrives damaged or you receive the wrong product, please contact us immediately at support@waterfilter.net.au with photos and your order number. We will send a replacement or issue a refund as per our return policy..
How long does shipping take?
Shipping times depend on location and stock availability. Standard delivery is 3–7 business days for most regions.
Expedited shipping options are available upon request.
Do you ship internationally?
Yes, we offer international shipping for most of our industrial water treatment products. Contact us for custom shipping quotes and lead times.