Hanna GroLine 1413 µS/cm Conductivity Standard Solution

Hanna GroLine 1413 µS/cm Conductivity Standard Solution provides a reliable reference point for calibrating compatible EC and TDS meters used in hydroponics, aquaponics, greenhouses, indoor gardens, and agricultural water testing. Accurate meter calibration helps growers prepare consistent nutrient solutions and confidently monitor changing conditions within reservoirs and irrigation systems.

This premium conductivity standard is prepared using equipment calibrated with potassium chloride NIST 2202 Standard Reference Material. It is available in multiple packaging formats, allowing growers to select the option that best matches their testing frequency and calibration routine.

Key Benefits

• Reliable calibration standard: Provides a recognized 1,413 µS/cm reference point for compatible EC and TDS meters.
• Designed for growers: Ideal for monitoring hydroponic nutrients, aquaponic water, greenhouse irrigation, and fertigation solutions.
• Supports consistent readings: Routine calibration helps confirm that a meter is measuring conductivity correctly.
• NIST-traceable preparation: Standardized using equipment calibrated with potassium chloride NIST 2202 Standard Reference Material.
• Quality-controlled formulation: Prepared with deionized water for analytical use and precision laboratory equipment.
• Dye-free solution: Contains no added dyes that could stain sensitive probe components.
• Multiple format options: Choose the packaging style that best fits occasional or routine calibration needs.
• Portable and practical: Suitable for grow rooms, greenhouses, testing stations, and field use.

Product Specifications

• Manufacturer: Hanna Instruments
• Product line: GroLine
• Solution type: Conductivity calibration standard
• Conductivity value: 1,413 µS/cm at 25°C
• Equivalent value: 1.413 mS/cm at 25°C
• Traceability: Standardized using a conductivity meter calibrated with potassium chloride NIST 2202 SRM
• Preparation water: Deionized water for analytical use in accordance with ISO 3696/BS 3978
• Formulation: Dye-free
• Available formats: Bottle and single-use sachet options
• Intended instruments: Compatible EC and TDS meters that support a 1,413 µS/cm calibration point

Conductivity changes with temperature. The stated reference value of 1,413 µS/cm applies at 25°C. Follow the instrument manufacturer’s temperature-compensation and calibration instructions for the most accurate results.

Why Calibrate an EC or TDS Meter?

EC meters measure the electrical conductivity of a solution to help growers evaluate the concentration of dissolved ionic material. Compatible TDS meters use conductivity readings and a programmed conversion factor to estimate dissolved solids in parts per million.

Routine calibration helps confirm that the meter is interpreting conductivity correctly. Reliable measurements make it easier to prepare repeatable nutrient solutions, compare reservoir readings, recognize unexpected changes, and adjust feeding programs with greater confidence.

Meters should be calibrated according to the manufacturer’s recommended schedule and whenever readings appear inconsistent. Calibration may also be appropriate after extended storage, frequent use, probe cleaning, or exposure to concentrated fertilizer solutions.

How to Use

1. Confirm that the meter supports calibration at 1,413 µS/cm or 1.413 mS/cm.
2. Allow the meter, conductivity probe, and calibration solution to reach the same stable temperature.
3. Rinse the probe with distilled or deionized water.
4. Gently shake off excess water without touching or damaging the sensing surfaces.
5. Pour a fresh portion into a clean calibration vessel or open a single-use sachet, depending on the selected variant.
6. Immerse the required sensing area in the calibration solution.
7. Gently move or tap the probe to release trapped air bubbles.
8. Follow the meter manufacturer’s instructions to complete calibration.
9. Rinse the probe after calibration.
10. Discard any solution that has contacted the probe.

Never return used calibration solution to its original container.

Compatible Applications

Hanna GroLine 1413 µS/cm Conductivity Standard Solution is suitable for compatible meters used in:

• Hydroponic nutrient reservoirs
• Aquaponic systems
• Greenhouses
• Indoor gardens
• Coco coir and soilless production
• Fertigation systems
• Irrigation-water testing
• Source-water monitoring
• Nutrient-solution preparation
• Agricultural water-quality testing
• Compatible portable EC and TDS meters

Always verify that the instrument uses a 1,413 µS/cm calibration point before purchasing.

Choosing a Format

Bottle variants are convenient for growers who calibrate meters regularly or maintain multiple instruments. Pour only the amount needed into a separate, clean calibration vessel to protect the remaining solution from contamination.

Single-use sachets provide a fresh portion for each calibration session and are convenient for occasional use, field testing, or carrying with portable meters. Open a sachet immediately before use and discard the remaining solution afterward.

Storage and Handling

Store the calibration solution tightly sealed in a clean, dry location away from direct sunlight and extreme temperatures. Keep sachets sealed until immediately before use and close bottle containers promptly after dispensing.

Follow the expiration date printed on the selected product. Do not use solution that is expired, visibly contaminated, or stored in damaged packaging.

Important Usage Notes

• Select the desired format from the available product variants.
• Do not dilute the calibration standard.
• Never return used solution to the original container.
• Do not combine fresh and previously used calibration solution.
• Use clean calibration vessels when working with a bottle.
• Treat opened sachets as single-use products.
• A Certificate of Analysis is not included with individually sold sachets.
• Do not add calibration solution to a nutrient reservoir.
• Confirm meter compatibility with the 1,413 µS/cm calibration point.
• Follow the meter manufacturer’s instructions for temperature compensation and calibration.