Neptune Systems Probe Calibration Solutions

Over time, all probes will drift—especially in reef environments—so regular recalibration is essential for maintaining accurate water parameter monitoring. The Neptune Systems Probe Calibration Kit provides everything you need to recalibrate both pH and salinity (conductivity) probes used with your Apex system. This convenient, single-use kit is designed for ease of use and optimal accuracy.

Key Features

• Includes pH 7.0 and 10.0 calibration solutions for accurate two-point calibration
• Includes 53,000 µS salinity calibration solution, replicating natural seawater (35 ppt)
• Compatible with Neptune single or double junction pH probes and Neptune conductivity probes
• Single-use foil packets ensure fresh and stable solutions
• Ideal for routine maintenance of your Apex system probes
• Requires only clean, fresh water for rinsing between steps

pH Probe Calibration

Designed for use with single or double junction pH probes. Most controllers require a two-point calibration—typically at pH 7.0 and pH 10.0—to ensure accuracy across the range of expected readings. Simply open the packets, immerse the probe, and follow your controller’s calibration steps.

Calibration Recommendation

• Standard pH Probes: Calibrate every 3 months or as required

• Double Junction Probes: Calibrate every 4–6 months

Calibration ensures your monitoring system operates effectively, especially when used with automated dosing, CO₂ regulation, or advanced aquarium control systems.

Salinity / Conductivity Calibration

Neptune conductivity probes (and many others) are calibrated using a 53,000 µS solution, matching 35 ppt salinity—the standard for reef aquariums. This single-use packet ensures high precision for conductivity readings.

Calibration Recommendation

• Recommended every 3–6 months

• Use clean RO/DI water to rinse the probe between calibration steps

What’s Included

• 1x pH 7.0 Calibration Solution Packet
• 1x pH 10.0 Calibration Solution Packet
• 1x 53,000 µS Salinity Calibration Solution Packet