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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.

Part Number	Manu.	Model	Max. measuring range (mg/l, ppm)	Type of sensor	Cable length (m)	Field kit	Measures pH	Measures conductivity	Offer Price
Popular30207971	Mettler Toledo	Seven2Go Pro S9-Standard Kit	50	Optical (RDO)	1.80	No	No	No	£1118.00
OfferECDO601PLUSK	Eutech	DO 6+	19.99	Galvanic	1	Yes	No	No	£621.00
OfferHI-2040-02	Hanna Instruments	Edge	45	Polargraphic	1	Yes	Yes	Yes	£764.00
30266884	Mettler Toledo	FiveGo DO meter F4	45	N/A	0	No	Yes	Yes	£292.00
30266885	Mettler Toledo	FiveGo DO meter F4-Std-Kit	45	Generalist	1.80	No	Yes	Yes	£475.00
30266886	Mettler Toledo	FiveGo DO meter F4-Field-Kit	45	Generalist	1.80	Yes	Yes	Yes	£511.00
HI-2004-02	Hanna Instruments	Edge DO	45	Polargraphic	1	No	No	No	£656.00
30207959	Mettler Toledo	Seven2Go S4-Standard Kit	99.90	Polargraphic	1.80	No	No	No	£704.00
ECDO602PLUSK	Eutech	DO 6+	19.99	Galvanic	3	Yes	No	No	£711.00
30207960	Mettler Toledo	Seven2Go S4-Field Kit	99.90	Polargraphic	1.80	Yes	No	No	£745.00
35643-00	Cole-Parmer - Oakton	DO 100 Portable DO Meter and DO Probe	20	Polarographic	1	Yes	Yes	No	£788.00
HI-98193	Hanna Instruments	HI-98193	50	Polargraphic	4	Yes	No	No	£866.00
ECPDWP45000	Eutech	PD 450	20	N/A	0	No	Yes	Yes	£895.00
ECDO70042S	Eutech	DO 700	30	Galvanic	1	No	No	No	£926.00
51344621	Mettler Toledo	InLab OptiOx	50	Optical (RDO)	1.80	No	No	No	£1118.00
HI-6421P-02	Hanna Instruments	HI-6421/P	50	Polargraphic	1	No	No	No	£1147.00
30207972	Mettler Toledo	Seven2Go Pro S9-Field Kit	50	Optical (RDO)	1.80	Yes	No	No	£1152.00
51344622	Mettler Toledo	InLab OptiOx	50	Optical (RDO)	5	No	No	No	£1170.00
ECDOWP45003K	Eutech	DO 450	20	Optical (RDO)	3	Yes	No	No	£1180.00
51344623	Mettler Toledo	InLab OptiOx	50	Optical (RDO)	10	No	No	No	£1219.00
HI-98196	Hanna Instruments	HI-98196	50	Polargraphic	4	Yes	No	No	£1261.00
950001	Cole-Parmer Essentials	9500	19.99	N/A	0	No	No	No	£1268.00
ECDOWP60041K	Eutech	CyberScan DO 600	90	Galvanic	3	Yes	No	No	£1425.00
ECDOWP60042K	Eutech	CyberScan DO 600	90	Galvanic	7.60	Yes	No	No	£1546.00
HI-6421-02	Hanna Instruments	HI-6421	50	Optical (DO)	1	No	No	No	£1574.00
35415-00	Cole-Parmer - Oakton	DO 700	30	Optical (DO)	1	No	No	Yes	£1623.00
ECDO270042	Eutech	DO 2700	50	Polargraphic	1	No	No	No	£1867.00
HI-98198	Hanna Instruments	Opdo	50	Optical (DO)	4	Yes	No	No	£1895.00
35640-30	Cole-Parmer - Oakton	DO 450 Waterproof Portable Meter with Probe	20	Optical (RDO)	3	Yes	No	No	£2021.00
ECPDWP45004	Eutech	PD 450	20	Optical (RDO)	3	No	Yes	Yes	£2119.00
ECPDWP45004K	Eutech	PD 450	20	Optical (RDO)	3	Yes	Yes	Yes	£2287.00

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