Bluelab pH 4.0 Calibration Solution 250ml

Here’s the product description for the calibration solution you asked about:

What is Bluelab pH 4.0 Calibration Solution 250 ml

This is a pH calibration solution designed for adjusting and verifying accuracy of pH meters, pens, monitors, or controllers — especially those used in growing, hydroponics, labs, aquariums, and other applications where precise pH measurement matters.

 Key Description

• Purpose: Used as a standard pH 4.0 buffer solution to calibrate pH measurement equipment so it reads correctly at that reference point.
• Why it matters: pH meters should be calibrated with known reference solutions regularly (often monthly or before critical measurements) to ensure accurate readings.
• How calibration works: Typically, meters are first calibrated at pH 7.0 (neutral) then at pH 4.0 (acidic slope) to set the instrument’s accuracy curve.
• Storage: Keep the bottle sealed and stored in a cool, dark place to maintain solution stability.

Technical / Practical Details

• Volume: 250 ml (8.4 fl oz) per bottle.
• Standards: Manufactured to high laboratory reference standards (often traceable to standards like NIST) so your meter calibration is reliable.
• Use with: Suitable for all brands of pH meters, but particularly recommended for use with Bluelab meters and probes.

 Why You Need It

• Regular calibration ensures accurate and consistent pH measurements, which is crucial for nutrient solution management (especially in hydroponics/growth systems).
• Helps maximize the life and performance of pH probes and instruments.