pH 4.01 buffer solution designed for calibrating pH testers and electrodes. Bottle format of 230 mL with declared accuracy of ±0.01 pH.
Key features
- Parameter: pH
- pH value: 4.01 (at 25 °C)
- Accuracy: ±0.01 pH
- Format: 230 mL bottle
- Type: ready-to-use buffer solution
Overview
What it is for
It is used to calibrate pH meters using a known reference point. It is useful for maintaining reliable readings when checking the pH of water and solutions.
Who it is for
- Those using a pH meter and wanting to keep it calibrated
- Growers who adjust the pH of water or nutrient solution
- Those who prefer a ready-to-use solution without preparation
What makes it different
- Ready-to-use “lab grade” solution
- Packaging declared sealed and protected to reduce alterations before use
How to use
Measurement
- Pour a small amount of buffer solution into a clean container.
- Insert the tester or electrode into the solution to start the calibration procedure.
- Follow the specific procedure required by your pH meter.
Calibration
- Indicated frequency: at least once a month.
Maintenance
- Close the bottle immediately after use.
- To reduce contamination, use a separate container and do not pour already used solution back into the bottle.
Warnings
- Use clean containers to avoid contamination.
- Do not mix with other liquids.
Technical specifications
- pH value: 4.01 (at 25 °C)
- Accuracy: ±0.01 pH
- Format: 230 mL
Brand
Buffer solution under the Milwaukee Instruments brand.
FAQ & growing tips
How often should it be used to calibrate the meter?
The product page indicates calibration at least monthly.
Can I calibrate directly in the bottle?
The page suggests pouring it into a container and placing the tester or electrode there to start calibration.