
MARK-302М Dissolved oxygen meter

Basic kit:
- Converting unit
- DO sensor with 1.5 meter cable
- Electrolyte
- Spare parts kit
- Battery type AA – 2 pcs.
- Operation manual
Optionally:
- 20 meter cable
- Power supply with charger
- Set of AA batteries
- Nozzle for working in a pond
- Device bag
- Country of OriginRussia
- ManufacturerVZOR
- ViewOximeter
- MobilityPortable
- Warranty24 месяца (при поставках по РФ)
Specify the price from the manager!
- Delivery is possible by courier service, transport company, or any other method convenient for you. Delivery costs are borne by the Buyer.
- We work exclusively with legal entities. Payment is made to the current account of LLC "VZOR" based on the issued invoice.




Video
This video will help you choose the right equipment when ordering the device. You will also learn about the main areas of application, advantages, measurement modes, features of the analyzer's startup, and more.
Advantages
Convenience and accuracy of measurement, minimum maintenance
Automatic barometric pressure compensation.
Automatic temperature compensation.
Automatic one-point calibration in air.
3 measuring modes
DO concentration, ppm.
Saturation, %.
Temperature, °С.
Long-lived sensor
Lifetime of the oxygen sensor is min. 10 years.
High-contrast LCD display
Low power consumption
Battery lifespan up to 2000 hours of work.
Determination of biochemical oxygen demand using an oxymeter MARK-302M in an accredited laboratory (Moscow Region).
This video demonstrates the determination of biochemical oxygen demand (BOD) by amperometric method using a dissolved oxygen analyzer MARK-302M (produced by OOO “VZOR”) in accordance with approved regulatory documentation: • PND F 14.1:2:3:4.123-97 "Method for measuring biochemical oxygen consumption after n-days incubation (BOD full) in surface freshwater, groundwater, drinking water, wastewater and treated wastewater." • RD 52.24.490-2019 "Biochemical oxygen demand in waters. Methodology for measurements by titrimetric and amperometric methods" (RD 52.24.420-2006).
Specification
|
Measuring range |
Resolution |
Accuracy |
---|---|---|---|
DO concentration, ppm |
0-20 |
0,001 |
±(0,05+0,04*of measured value) |
Saturation, % |
0-200 |
0,1 |
±(0,6+0,04*of measured value) |
Temperature, °C |
0-50* |
0,1 |
±0,3 |
|
*automatic temperature compensation range |
||
|
Converting unit |
Sensor |
|
Dimensions, mm |
85*155*35 |
Ø 16*142 Ø 10*1101 |
|
Weight, g |
300 |
100 |
|
|
|
1 submersible part |
|
Power supply |
battery type AA – 2 pcs |
|
Temperature, °C |
0-50 |
Water flow rate across the sensor membrane, sm/sec, min. |
5 |
Ambient overpressure, bar, max. |
0,2 |
Documents
Additionally

Electrolyte EK VR47.05.100
AA rechargeable elements set

Set of chemical reagents for preparing a "zero" solution

Membrane Module M302M

Water Sampling Attachment VR29.12.060

Device bag
