Horiba LAQUAtwin ORP Meter  (ORP-11)

Features:

• High Accuracy ORP/Eh readings to ±2 mV
• Dual ORP and Eh (redox) readings
• Easy 1-point calibration
• Temperature compensation
• Gives insight in to soil health
• IP67 Waterproof and dustproof
• Easy "spoon" sensor allows small sample size
• 1 Year Warranty

The Horiba LAQUAtwin ORP-11 pocket meter provides a fast, accurate, and practical solution for measuring soil oxidation-reduction potential (Eh), an essential indicator of soil health and productivity. Designed for both field and research use, this compact meter delivers exceptional accuracy of ±2 mV, allowing users to monitor their soil conditions. By providing insight into oxygen availability and nutrient dynamics, the ORP-11 helps farmers and growers make informed decisions regarding the health of their soils.

This pocket-sized meter measures both ORP and Eh values, giving users flexibility depending on their application. ORP readings are taken using practical reference electrodes such as Ag/AgCl, which are commonly used in industrial and field environments. For scientific and standardized measurements, the meter also displays Eh values referenced to the Standard Hydrogen Electrode (SHE). This dual capability makes the ORP-11 a versatile meter for doing on-site and laboratory soil testing.

Understanding soil Eh is critical for optimizing plant growth, as it directly influences nutrient availability and root health. Oxygen-rich soils with higher Eh values typically support better nutrient uptake and stronger plant development. Most crops thrive within an Eh range of approximately +400 to +450 mV at a pH of 5.5 to 8, indicating well-aerated, nutrient-rich conditions. With the ORP-11, users can easily track these parameters and adjust soil management practices to maintain optimal growing environments.

When combined with the Horiba LAQUAtwin pH meter, the ORP-11 is an indispensable tool for farmers, agronomists, and hobby gardeners for assessing their soil quality.

Kit Includes:

• Horiba LAQUAtwin ORP-11 Meter
• 5 sampling sheets
• 225 mV ORP standard solution (14 ml)
• Swab for platinum electrode polishing
• Dropper
• Batteries