Meytec buffer solution - pH 4.01 - bottle 250 ml

Meytec buffer solution – pH 4.01 – bottle 250 ml

The Meytec buffer solution pH 4.01 bottle 250 ml is an acidic calibration liquid for pH meters and controllers used on swimming pools, spas and water treatment systems. It offers a stable pH 4.01 reference value for regular calibration of electronic pH probes, ensuring that day to day measurements remain accurate and reliable.

Use of pH 4.01 buffer solution

Electronic pH meters drift over time as the probe ages and is exposed to chlorinated water, chemicals and temperature variations. Calibrating with a Meytec buffer solution pH 4.01 bottle 250 ml allows you to correct this drift in the acidic region of the scale, so the instrument displays values that closely match the real pH of the pool water.

In most pool applications, this pH 4.01 buffer is used together with a neutral pH 7.0 buffer in a two point calibration. This method improves accuracy across the working range and is recommended for both portable testers and fixed pH control units.

250 ml bottle format for frequent calibration

The Meytec buffer solution pH 4.01 bottle 250 ml is supplied in a screw cap design bottle that is convenient for users who calibrate their instruments regularly. The larger volume offers good value for service partners, technicians and operators of pools that require frequent calibration checks.

• 250 ml of ready to use pH 4.01 buffer solution.
• Design bottle with secure cap for repeated opening and closing.
• Suitable for bench meters, handheld testers and controllers.

To maintain the certified pH value for as long as possible, the bottle should always be closed tightly after use and handled with clean glassware or plastic containers to avoid contamination.

Calibration with Meytec buffer solutions

The Meytec buffer solution pH 4.01 bottle 250 ml is compatible with most pH meters that accept external buffer solutions. It is intended for calibration and verification of pH probes in residential and commercial pools, spas and other water systems where accurate pH control is required.

• Acidic reference point for two point calibration with pH 7.0 buffer.
• Supports precise adjustment of pH probes in pool and spa water.
• Useful for both manual testers and automatic dosing equipment.

Always follow the calibration procedure specified by the instrument manufacturer, paying attention to any requirements regarding buffer sequence, temperature and stabilisation time.

Example two point calibration procedure

A typical two point calibration with Meytec buffers uses pH 7.0 as the neutral point and pH 4.01 as the acidic point. This combination covers the range most relevant to pool treatment.

• Rinse the pH probe with clean water and gently dry with a soft cloth.
• Pour a small amount of pH 7.0 buffer into a clean container and immerse the probe.
• When the reading is stable, adjust the meter to 7.0 according to the instructions.
• Rinse the probe to avoid mixing buffers, then place it in a sample of pH 4.01 buffer.
• Adjust the reading to 4.01 or confirm the value if the meter supports automatic calibration.

After calibration, the probe can be rinsed again and returned to normal pool water measurement with improved accuracy and repeatability.

Storage and handling recommendations

To keep the Meytec buffer solution pH 4.01 bottle 250 ml within specification, it should be stored in a cool, dry place, away from direct sunlight and heat sources. Exposure to air, dirt or chemicals can change the pH value over time, so careful handling is important.

• Always close the bottle tightly immediately after use.
• Pour only the amount needed for one calibration into a separate container.
• Do not pour used buffer back into the original bottle.

With correct storage and regular calibration, this buffer solution helps to extend pH probe life and supports stable, accurate control of pool water treatment throughout the season.