Neptune Systems pH Calibration Fluid (pH 4.0 / 7.0 / 10.0)

Ensure Accurate pH Readings with Genuine Calibration Solutions

The Neptune Systems pH Calibration Fluid is specially formulated to accurately calibrate pH probes used with the Neptune Apex Aquarium Controller and other compatible pH monitoring devices. Available in pH 4.0, pH 7.0, and pH 10.0 buffer solutions, these laboratory-grade calibration fluids help maintain precise and reliable pH measurements for freshwater, planted, and marine aquariums.

Regular calibration ensures your pH probe continues to deliver accurate readings, allowing you to monitor water chemistry confidently and maintain a stable environment for fish, corals, and aquatic plants.

Available Calibration Solutions

pH 4.0

• Ideal for low-pH calibration
• Commonly used for freshwater aquariums, planted tanks, and acidic water applications

pH 7.0

• Neutral calibration solution
• Standard reference point for most pH probe calibrations

pH 10.0

• Ideal for high-pH calibration
• Recommended for saltwater aquariums, reef systems, and alkaline water applications

Key Features

• Genuine Neptune Systems calibration fluid
• Available in pH 4.0, 7.0, and 10.0
• Laboratory-grade buffer solutions for accurate calibration
• Helps maintain reliable and consistent pH measurements
• Ready-to-use with no mixing required
• Suitable for routine maintenance and probe calibration
• Factory-sealed to preserve accuracy