Dissolved Oxygen Meters UK | Monitor Water Quality

Price

£0 - £249.99
£250 - £499.99
£500 - £749.99
£750 - £999.99
£1000 - £1249.99
£1000 - £1249.99
£1250 - £1499.99

Manufacturer

Cole-Parmer - Oakton
Cole-Parmer Essentials
Eutech
Hanna Instruments
Mettler Toledo

Max. measuring range ( mg/l, ppm ) This is the maximum range in mg/l the meter can read to.

20
30
45
50
90
99.9
19.99

Type of sensor

Polargraphic requires polarising first (8 hours) but the sample readings are quicker. Optical (RDO) uses light technology and is preferred for its short sample time, no need for sample flow and no warm up time wasted. Optical (DO) sensors are based on the principle of fluorescence quenching. Galvanic sensors eliminate polarisation delay and require no warm-up time to deliver quick and stable responses.

Galvanic
Generalist
N/A
NA
Optical (DO)
Optical (RDO)
Polargraphic
Polarographic

Cable length ( m ) The length of cable on the probe from the meter.

Field kit

No
Yes

Measures pH With the correct probe, certain units can also measure pH. These probes need to be purchased separately. Select 'Yes' if you also wish to measure pH.

With the correct probe, certain units can also measure pH. These probes need to be purchased separately. Select 'Yes' if you also wish to measure pH.

No
Yes

Measures conductivity With the correct probe, certain units can also measure conductivity. These probes need to be purchased separately. Select 'Yes' if you also wish to measure conductivity.

With the correct probe, certain units can also measure conductivity. These probes need to be purchased separately. Select 'Yes' if you also wish to measure conductivity.

No
Yes

Portable / Benchtop Dissolved oxygen meters are available in either benchtop or portable models

Benchtop
Portable

Location of manufacture

No Data
UK
European
Outside of Europe

Dissolved Oxygen Meters

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	Part Number	Manu.	Model	Max. measuring range (mg/l, ppm)	Type of sensor	Cable length (m)	Field kit	Measures pH	Measures conductivity	Offer Price
Dissolved oxygen meter Mettler Seven2Go Pro S9-Standard Kit maximum measuring range 50mg/l, ppm, includes optical DO sensor, 1.8m cable, no field kit (replaces 51302592)	Popular30207971 Dissolved oxygen meter Mettler Seven2Go Pro S9-Standard Kit maximum measuring range 50mg/l, ppm, includes optical DO sensor, 1.8m cable, no field kit (replaces 51302592)	Mettler Toledo	Seven2Go Pro S9-Standard Kit	50	Optical (RDO)	1.80	No	No	No	£1164.00
Wolf special offer - Dissolved oxygen meter Eutech DO 6+ measuring range 19.99mmg/l, ppm, galvantic sensor, 1m cable, supplied with field kit OFFER ENDS 31-07-2025	OfferECDO601PLUSK Wolf special offer - Dissolved oxygen meter Eutech DO 6+ measuring range 19.99mmg/l, ppm, galvantic sensor, 1m cable, supplied with field kit OFFER ENDS 31-07-2025	Eutech	DO 6+	19.99	Galvanic	1	Yes	No	No	£621.00
Wolf special offer - Dissolved oxygen meter Hanna Instruments Edge measuring range 0 – 45mmg/l, ppm, polargraphic sensor, 1m cable, not supplied with field kit. Can also measure pH and conductivity with the relevant accessories OFFER ENDS 31-07-2025	OfferHI-2040-02 Wolf special offer - Dissolved oxygen meter Hanna Instruments Edge measuring range 0 – 45mmg/l, ppm, polargraphic sensor, 1m cable, not supplied with field kit. Can also measure pH and conductivity with the relevant accessories OFFER ENDS 31-07-2025	Hanna Instruments	Edge	45	Polargraphic	1	Yes	Yes	Yes	£764.00
Dissolved oxygen meter Mettler Toledo, FiveGo DO meter F4, maximum measuring range 45mg/l ppm, measures pH, measure conductivity, portable	30266884 Dissolved oxygen meter Mettler Toledo, FiveGo DO meter F4, maximum measuring range 45mg/l ppm, measures pH, measure conductivity, portable	Mettler Toledo	FiveGo DO meter F4	45	N/A	0	No	Yes	Yes	£315.00
Dissolved oxygen meter Mettler Toledo, FiveGo DO meter F4-Std-Kit, maximum measuring range 45mg/l ppm, generalist sensor, 1.8 m cable length, measures pH, measure conductivity, portable	30266885 Dissolved oxygen meter Mettler Toledo, FiveGo DO meter F4-Std-Kit, maximum measuring range 45mg/l ppm, generalist sensor, 1.8 m cable length, measures pH, measure conductivity, portable	Mettler Toledo	FiveGo DO meter F4-Std-Kit	45	Generalist	1.80	No	Yes	Yes	£509.00
Dissolved oxygen meter Mettler Toledo, FiveGo DO meter F4-Field-Kit, maximum measuring range 45mg/l ppm, generalist sensor, 1.8 m cable length, field kit, measures pH, measure conductivity, portable	30266886 Dissolved oxygen meter Mettler Toledo, FiveGo DO meter F4-Field-Kit, maximum measuring range 45mg/l ppm, generalist sensor, 1.8 m cable length, field kit, measures pH, measure conductivity, portable	Mettler Toledo	FiveGo DO meter F4-Field-Kit	45	Generalist	1.80	Yes	Yes	Yes	£550.00
Dissolved oxygen meter Hanna Instruments Edge DO measuring range 0 – 45mmg/l, ppm, polargraphic sensor, 1m cable, not supplied with field kit	HI-2004-02 Dissolved oxygen meter Hanna Instruments Edge DO measuring range 0 – 45mmg/l, ppm, polargraphic sensor, 1m cable, not supplied with field kit	Hanna Instruments	Edge DO	45	Polargraphic	1	No	No	No	£656.00
Dissolved oxygen meter Hanna Instruments HI-9146, measuring range 0 – 45mmg/l, supplied with polarographic DO probe with a 4m cable (HI-76407/4F), portable	HI-9146 Dissolved oxygen meter Hanna Instruments HI-9146, measuring range 0 – 45mmg/l, supplied with polarographic DO probe with a 4m cable (HI-76407/4F), portable	Hanna Instruments	HI-9146	45	Polarographic	4	No	No	No	£698.00
Dissolved oxygen meter Eutech DO 6+ measuring range 19.99mmg/l, ppm, galvantic sensor, 3m cable, supplied with field kit	ECDO602PLUSK Dissolved oxygen meter Eutech DO 6+ measuring range 19.99mmg/l, ppm, galvantic sensor, 3m cable, supplied with field kit	Eutech	DO 6+	19.99	Galvanic	3	Yes	No	No	£711.00
Dissolved oxygen meter Mettler Seven2Go S4-Standard Kit maximum measuring range 99.9mg/l, ppm, polargraphic sensor, 1.8m cable, no field kit (replaces 51302561)	30207959 Dissolved oxygen meter Mettler Seven2Go S4-Standard Kit maximum measuring range 99.9mg/l, ppm, polargraphic sensor, 1.8m cable, no field kit (replaces 51302561)	Mettler Toledo	Seven2Go S4-Standard Kit	99.90	Polargraphic	1.80	No	No	No	£730.00
Dissolved oxygen meter Mettler Seven2Go S4-Field Kit maximum measuring range 99.9mg/l, ppm, polargraphic sensor, 1.8m cable, supplied with field kit (replaces 51302562)	30207960 Dissolved oxygen meter Mettler Seven2Go S4-Field Kit maximum measuring range 99.9mg/l, ppm, polargraphic sensor, 1.8m cable, supplied with field kit (replaces 51302562)	Mettler Toledo	Seven2Go S4-Field Kit	99.90	Polargraphic	1.80	Yes	No	No	£774.00
Dissolved oxygen meter Cole-Parmer - Oakton DO 100 Portable DO Meter and DO Probe measuring range 20mg/l ppm, polargraphic sensor, 1m cable lengh, suitable as field kit, measures pH.	35643-00 Dissolved oxygen meter Cole-Parmer - Oakton DO 100 Portable DO Meter and DO Probe measuring range 20mg/l ppm, polargraphic sensor, 1m cable lengh, suitable as field kit, measures pH.	Cole-Parmer - Oakton	DO 100 Portable DO Meter and DO Probe	20	Polarographic	1	Yes	Yes	No	£788.00
Dissolved oxygen meter Hanna Instruments HI-98193 measuring range 0 – 50mmg/l, ppm, polargraphic sensor, 4m cable, supplied with field kit	HI-98193 Dissolved oxygen meter Hanna Instruments HI-98193 measuring range 0 – 50mmg/l, ppm, polargraphic sensor, 4m cable, supplied with field kit	Hanna Instruments	HI-98193	50	Polargraphic	4	Yes	No	No	£866.00
Dissolved oxygen meter Eutech PD 450 measuring range 20mmg/l, ppm, no sensor, no cable, no field kit, can also measure pH and conductivity with the relevant accessories	ECPDWP45000 Dissolved oxygen meter Eutech PD 450 measuring range 20mmg/l, ppm, no sensor, no cable, no field kit, can also measure pH and conductivity with the relevant accessories	Eutech	PD 450	20	N/A	0	No	Yes	Yes	£895.00
Dissolved oxygen meter Mettler Toledo InLab OptiOx maximum measuring range 50mg/l, ppm, optical (RDO) sensor, 1.8m cable, no field kit	51344621 Dissolved oxygen meter Mettler Toledo InLab OptiOx maximum measuring range 50mg/l, ppm, optical (RDO) sensor, 1.8m cable, no field kit	Mettler Toledo	InLab OptiOx	50	Optical (RDO)	1.80	No	No	No	£1131.00
Dissolved oxygen meter Hanna Instruments HI-6421/P measuring range 0 – 50mmg/l (ppm), with polarographic DO sensor (HI764833), benchtop, capacitive multi-touch screen and keys, ethernet and Wi-Fi Connection, USB type A & type C	HI-6421P-02 Dissolved oxygen meter Hanna Instruments HI-6421/P measuring range 0 – 50mmg/l (ppm), with polarographic DO sensor (HI764833), benchtop, capacitive multi-touch screen and keys, ethernet and Wi-Fi Connection, USB type A & type C	Hanna Instruments	HI-6421/P	50	Polargraphic	1	No	No	No	£1147.00
Dissolved oxygen meter Eutech DO 450 measuring range 20mmg/l, ppm, optical (RDO) sensor, 3m cable, supplied with field kit	ECDOWP45003K Dissolved oxygen meter Eutech DO 450 measuring range 20mmg/l, ppm, optical (RDO) sensor, 3m cable, supplied with field kit	Eutech	DO 450	20	Optical (RDO)	3	Yes	No	No	£1180.00
Dissolved oxygen meter Mettler Toledo InLab OptiOx maximum measuring range 50mg/l, ppm, optical (RDO) sensor, 5m cable, no field kit	51344622 Dissolved oxygen meter Mettler Toledo InLab OptiOx maximum measuring range 50mg/l, ppm, optical (RDO) sensor, 5m cable, no field kit	Mettler Toledo	InLab OptiOx	50	Optical (RDO)	5	No	No	No	£1186.00
Dissolved oxygen meter Mettler Seven2Go Pro S9-Field Kit maximum measuring range 50mg/l, ppm, optical sensor, 1.8m cable, supplied with field kit (replaces 51302593 and 51302594)	30207972 Dissolved oxygen meter Mettler Seven2Go Pro S9-Field Kit maximum measuring range 50mg/l, ppm, optical sensor, 1.8m cable, supplied with field kit (replaces 51302593 and 51302594)	Mettler Toledo	Seven2Go Pro S9-Field Kit	50	Optical (RDO)	1.80	Yes	No	No	£1197.00
Dissolved oxygen meter Mettler Toledo InLab OptiOx maximum measuring range 50mg/l, ppm, optical (RDO) sensor, 10m cable, no field kit	51344623 Dissolved oxygen meter Mettler Toledo InLab OptiOx maximum measuring range 50mg/l, ppm, optical (RDO) sensor, 10m cable, no field kit	Mettler Toledo	InLab OptiOx	50	Optical (RDO)	10	No	No	No	£1229.00
Dissolved oxygen meter Cole-Parmer 9500 supplied with DO2 probe with ATC (522023), electrode holder, spare membranes, KCl fill solution, zero calibration salts, adapter bush and UK power supply	950001 Dissolved oxygen meter Cole-Parmer 9500 supplied with DO2 probe with ATC (522023), electrode holder, spare membranes, KCl fill solution, zero calibration salts, adapter bush and UK power supply	Cole-Parmer Essentials	9500	19.99	N/A	0	No	No	No	£1268.00
Dissolved oxygen meter Eutech CyberScan DO 600 measuring range 90mmg/l, ppm, galvantic sensor, 3m cable, supplied with field kit	ECDOWP60041K Dissolved oxygen meter Eutech CyberScan DO 600 measuring range 90mmg/l, ppm, galvantic sensor, 3m cable, supplied with field kit	Eutech	CyberScan DO 600	90	Galvanic	3	Yes	No	No	£1425.00
Dissolved oxygen meter Eutech CyberScan DO 600 measuring range 90mmg/l, ppm, galvantic sensor, 7.6m cable, supplied with field kit	ECDOWP60042K Dissolved oxygen meter Eutech CyberScan DO 600 measuring range 90mmg/l, ppm, galvantic sensor, 7.6m cable, supplied with field kit	Eutech	CyberScan DO 600	90	Galvanic	7.60	Yes	No	No	£1546.00
Dissolved oxygen meter Hanna Instruments HI-6421 measuring range 0 – 50mmg/l (ppm), with optical DO sensor (HI7641133), benchtop, capacitive multi-touch screen and keys, ethernet and Wi-Fi Connection, USB type A & type C	HI-6421-02 Dissolved oxygen meter Hanna Instruments HI-6421 measuring range 0 – 50mmg/l (ppm), with optical DO sensor (HI7641133), benchtop, capacitive multi-touch screen and keys, ethernet and Wi-Fi Connection, USB type A & type C	Hanna Instruments	HI-6421	50	Optical (DO)	1	No	No	No	£1574.00
Dissolved oxygen meter Cole-Parmer - Oakton DO 700 Oakton maximum measuring range 30mg/l, ppm, DO2 probe sensor, cable length 1m, no field kit, does not measure pH, measures conductivity.	35415-00 Dissolved oxygen meter Cole-Parmer - Oakton DO 700 Oakton maximum measuring range 30mg/l, ppm, DO2 probe sensor, cable length 1m, no field kit, does not measure pH, measures conductivity.	Cole-Parmer - Oakton	DO 700	30	Optical (DO)	1	No	No	Yes	£1623.00
Dissolved oxygen meter Eutech DO 2700 measuring range 50mmg/l, ppm, polargraphic sensor, 1m cable, no field kit	ECDO270042 Dissolved oxygen meter Eutech DO 2700 measuring range 50mmg/l, ppm, polargraphic sensor, 1m cable, no field kit	Eutech	DO 2700	50	Polargraphic	1	No	No	No	£1867.00
Dissolved oxygen meter Hanna Instruments Opdo measuring range 0 – 50mg/l, ppm, optical (DO) sensor (HI-764113), 4m cable, supplied with field kit	HI-98198 Dissolved oxygen meter Hanna Instruments Opdo measuring range 0 – 50mg/l, ppm, optical (DO) sensor (HI-764113), 4m cable, supplied with field kit	Hanna Instruments	Opdo	50	Optical (DO)	4	Yes	No	No	£1895.00
Dissolved oxygen meter Cole-Parmer - Oakton DO 450 Waterproof Portable Meter with Probe measuring range 20mg/l ppm, Optical (RDO) sensor, 3m cable lengh, suitable as field kit, measures pH.	35640-30 Dissolved oxygen meter Cole-Parmer - Oakton DO 450 Waterproof Portable Meter with Probe measuring range 20mg/l ppm, Optical (RDO) sensor, 3m cable lengh, suitable as field kit, measures pH.	Cole-Parmer - Oakton	DO 450 Waterproof Portable Meter with Probe	20	Optical (RDO)	3	Yes	No	No	£2021.00
Dissolved oxygen meter Eutech PD 450 measuring range 20mmg/l, ppm, optical (RDO) sensor, 3m cable, no field kit, can also measure pH and conductivity with the relevant accessories	ECPDWP45004 Dissolved oxygen meter Eutech PD 450 measuring range 20mmg/l, ppm, optical (RDO) sensor, 3m cable, no field kit, can also measure pH and conductivity with the relevant accessories	Eutech	PD 450	20	Optical (RDO)	3	No	Yes	Yes	£2119.00
Dissolved oxygen meter Eutech PD 450 measuring range 20mmg/l, ppm, optical (RDO) sensor, 3m cable, supplied with field kit, can also measure pH and conductivity with the relevant accessories	ECPDWP45004K Dissolved oxygen meter Eutech PD 450 measuring range 20mmg/l, ppm, optical (RDO) sensor, 3m cable, supplied with field kit, can also measure pH and conductivity with the relevant accessories	Eutech	PD 450	20	Optical (RDO)	3	Yes	Yes	Yes	£2287.00