INTRODUCTION TO HORIBA WATER QUALITY INTRUMENTS
The HORIBA Water Quality Meter Series includes a range of high-end meters designed for precise and reliable water quality testing.
Key features of these meters include:
- User-Friendly Design: Meters are designed for ease of use, with an IP67 waterproof rating and shock-resistant casing, making them suitable for field measurements in various
- Advanced Technology: The LAQUA brand offers innovative solutions with advanced technology, including thick film and micro-fabrication electrodes for enhanced measurement accuracy.
- Versatile Applications: The meters support multiple parameters such as pH, conductivity, and dissolved oxygen, making them suitable for various water quality assessments.
- Robust Construction: The meters are built to withstand harsh environmental conditions, ensuring durability and reliability in fieldwork.
The Horiba Water Quality Instruments (WQI) is made up of four series
- LAQUAwin pocket meters,
- LAQUA handheld meters,
- LAQUA benchtop meters,
- Field meters
LAQUATWIN POCKET WATER QUALITY METERS (Compact Measurement Solutions for Precise Water Analysis On-Site or in the Laboratory).
In this category, you will find compact Horiba pocket testers for the reliable determination of various water parameters. The devices are specifically designed for mobile use, enabling fast and precise analysis directly on site – without complex laboratory equipment. Thanks to their handy design and ease of use, they are suitable for both field applications and laboratory use.


LAQUAtwin Product Meters Line
| SN | PARAMETER | PRODUCT LINE | VARIATIONS | FEATURES |
| 1 | pH pocket meter | ![]() |
a. pH 11 – pH/mV (2-PT CAL, o.1pH)
b. pH 22 – pH/mV (3-PT CAL, 0.01 pH) c. pH 33 – pH/mV/Temp (5-PT CAL, 0.01 pH) |
Water proof
Micro volume Backlight, |
| 2 | Conductivity pocket meter | ![]() |
a. EC 11 – Cond. (3 PT CAL, 10.0mS/cm
b. EC 22 – Cond./Temp (4 PT CAL, 10.0mS/cm c. EC 33 – Cond/Temp/TDS (5 PT CAL, 10.0mS/cm |
Water proof
Micro volume Backlight, |
| 3 | ORP | ![]() |
a. ORP 11 – OTP/Temp (1 PT CAL)
|
Water proof
Micro volume Backlight, |
| 4 | Salt | ![]() |
ECSalt 11 – Salt/Temp (EC Cond., 2 PT CAL) | Water proof
Micro volume Backlight, |
| 5 | NA+ | ![]() |
Na 11 – NA + (Sodium ion/Temp, 2 PT CAL) | Water proof
Micro volume Backlight, |
| 6 | k+ | ![]() |
K 11 – K + (Potassium ion/Temp, 2 PT CAL) | Water proof
Micro volume Backlight, |
| 7 | NO3– | ![]() |
NO3– 11 – ( NO3-/Temp, 2 PT CAL) | Water proof
Micro volume Backlight, |
| 8 | Ca2+ | ![]() |
Ca 11 – Ca2+ (2 PT CAL) | Water proof
Micro volume Backlight, |
| 9 | F– | ![]() |
F 11 – F– /Temp (2 PT CAL) | Water proof
Micro volume Backlight, |
APPLICATIONS
- pH and Conductivity Determination of Nutrient Concentrations in Soil Solution and Tomato Plant Sap Measurements in Coconut Coir Substrate
- Determination of Nutrient Concentrations in Soil Solution and Tomato Plant Sap
- Measurement of pH in Plant Tissue
- Conductivity and Elephant’s Foot Testing
- Soil pH and Nutrient Availability
- Soil Nitrate Measurement for Determination of Plant-Available Nitrogen
- Soil Salinity Measurement in Almond Orchard
- Impact of Soil Salinity on Sugar Cane Yield
- Rapid In-Field Determination of Nitrogen in Onions
- Nitrate Measurement in Turf Grass
- Quick Nutrient Analysis in Strawberry Production
- pH and Conductivity for Testing Acrylic Paint Films and Paper Supports and Formulating Aqueous Cleaning Solutions
- Aquarium Water Testing
- pH Measurement in the Acidification of Fermented Sausages
- pH of Brine for Canned Food Testing
- pH Measurement to Determine Freshness of Meat Products
- Measurement of Calcium in Milk and Milk Beverages
- Nitrate Measurement in Hybrid Sudangrass and Pearl Millet Hays
- Residual Sodium Check During Clean in-Place Process
- pH of Cementf or Floor Installation Testing
- Measuring Salinity of Water
- Measurement of Calcium in Drinking Water
- Determination of Potassium in Sea Water









