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| Part Number | Manu. | Model |  | | | | | | 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)  |
*Popular*30207971
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  |
*Offer*ECDO601PLUSK
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  |
*Offer*HI-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 |
Understanding Dissolved Oxygen Meters
A laboratory dissolved oxygen meter is an essential instrument used to measure the concentration of dissolved oxygen (DO) in liquid samples. It is widely used in water quality testing, environmental monitoring, and biochemistry research. By determining the DO levels in water, researchers can assess the health of aquatic ecosystems or the efficiency of biological processes, such as fermentation or respiration in microbial cultures. These meters operate by using either electrochemical sensors or optical sensors, providing highly accurate and reliable results. Regular calibration ensures precision, making the dissolved oxygen meter indispensable for scientific experiments and industrial applications that require exact oxygen monitoring.
