Bluelab - pH 4.0 Calibration Solution (250 ml)

Bluelab pH 4.0 Calibration Solution 250 ml is a high-quality calibration solution designed to keep pH meters accurate and reliable. It is an ideal choice for growers, aquarium keepers and laboratory settings where accurate pH measurement matters.

Instructions:

• Preparation: Make sure the meter is clean before calibrating.
• Calibration: Immerse the pH meter's electrode in the solution and follow your meter's calibration instructions.
• Storage: Store the solution in a cool place, away from direct sunlight and heat.