Soil and Water ORP Meter

I. Product Introduction

The HD-QX6550S soil oxidation-reduction potential meter (ORP meter) is mainly used for on-site in-situ testing of the oxidation-reduction potential of fresh or moist soil, and for measuring the oxidation-reduction potential, pH and temperature of water (media). It complies with HJ 746-2015 "Soil quality - Determination of oxidation-reduction potential - Potentiometric method".

Soil oxidation-reduction potential (ORP/Eh) is a comprehensive indicator of soil environmental conditions that has been used for a long time. It characterises the relative degree of oxidation or reduction of the medium, strongly influences the chemical and biological processes of soil, and is an important parameter for understanding soil properties and processes. The higher the ORP, the stronger the oxidising power; the lower the ORP, the stronger the reducing power. A positive potential indicates that the solution shows oxidising properties, while a negative potential indicates reducing properties.

Water oxidation-reduction potential (ORP) is one of the most important water quality indicators. Although it cannot reflect water quality on its own, it can be combined with other water quality indicators to reflect the ecological environment of aquatic systems.

II. Applications

1. Industrial wastewater treatment: used in oxidation-reduction systems for water treatment, mainly the reduction of chromic acid and the oxidation of cyanide.

2. Water disinfection and application: ORP measures the disinfection effect on swimming pool water, mineral water and tap water. Because the bactericidal efficiency against coliform bacteria is related to the ORP, the ORP is a reliable indicator of water quality.

3. Aquaculture: ORP reflects the concentration of certain inorganic substances in water, the state of aquatic organisms and the oxygen content, and expresses the macroscopic oxidation-reduction property of the water, making it a comprehensive indicator of water quality.

III. Executive Standards

HJ 746-2015 Soil quality - Determination of oxidation-reduction potential - Potentiometric method

SL 94-1994 Determination of oxidation-reduction potential (potentiometric method)

IV. Technical Parameters

V. Key Features

1. ARM Cortex-M3 processor running the Android system.

2. Standard Type-C charging - a mobile phone charger can be used directly.

3. Continuous detection with a data acquisition interval configurable in minutes.

4. Calibration supported.

5. Built-in large-capacity lithium battery with remaining-charge display.

6. Automatic temperature compensation, with manual temperature compensation also supported.

7. Dedicated ORP electrode, reference electrode and stainless steel hollow rod supplied, allowing direct insertion into soil.

8. Reading lock (automatic reading): the measurement result is final and needs no conversion or calculation.

9. Results can be uploaded and exported to Excel for viewing on a computer.

10. Storage capacity of 5 million records with data storage and recall.

11. WiFi support for direct transmission of results to a supervision platform.

12. 3.5-inch colour touchscreen for a better user experience.

13. Automatic backlight adjustment and configurable sleep time.

14. IP65 protection rating.