Standard solution for EC calibration

Reference solution for calibrating conductivity (EC) meters. Useful for checking and maintaining reliable readings over time.

Key features

1. Parameter: conductivity (EC)
2. Value: 1413 µS/cm
3. Format: ready-to-use solution
4. Bottle volume: 230 mL
5. Shelf life: 5-year expiry

Overview

What it is for

It is used to calibrate and check EC meters used to verify the salt concentration/conductivity of water and nutrient solutions.

Who it is for

1. Hydroponic growers who monitor the EC of the solution
2. Those using EC meters and wanting repeatable calibration
3. Users who prefer ready standards with references declared by the manufacturer

What makes it different

1. Solution prepared against NIST-traceable standard
2. Table/values as a function of temperature shown on the label
3. 230 mL format with declared 5-year expiry

How to use

Measurement

1. Pour a small amount of solution into a clean container.
2. Immerse the EC meter probe in the solution.
3. Wait for the reading to stabilize.

Calibration

1. Set the meter calibration by following the instrument manufacturer's instructions, using the reference value of the solution.

Maintenance

1. Do not pour the solution already used in the calibration container back into the bottle.
2. Close the bottle tightly after use.

Warnings

1. Use clean containers to avoid contamination that can alter the value.
2. Store according to the instructions shown on the label and in the manufacturer's documentation.

Technical specifications

1. Parameter: conductivity (EC)
2. Nominal value: 1413 µS/cm
3. Volume: 230 mL
4. Traceability: NIST standard (KCl)
5. Expiry: 5 years

Brand

MILWAUKEE INSTRUMENT produces measuring instruments and reference solutions for calibration and maintenance, useful for keeping readings reliable over time.

FAQ & growing tips

Can I calibrate directly in the bottle?

It is preferable to pour a small amount into a clean container, to reduce contamination and preserve the remaining solution.

Why is a dedicated standard solution needed?

Because the EC of real samples varies and can be contaminated: a reference solution helps “realign” the instrument to a known value.

How long does a calibration solution last?

The manufacturer declares a 5-year expiry for this product.