Bluelab pH Probe KCI Storage Solution 250 ml (6/Cs)

Bluelab pH Probe KCl Storage Solution 250 ml — Professional-Grade Probe Hydration for High-Volume Operations

The Bluelab® pH Probe KCl Storage Solution 250 ml is the larger-format option for growers, labs, and commercial operations that regularly maintain multiple pH pens and probes. Formulated specifically for use with all Bluelab pH instruments, this potassium chloride (KCl) solution provides the ideal ionic environment to keep probe membranes hydrated, responsive, and accurate between uses and during long-term storage.

Manufactured to high laboratory standards, the KCl storage solution is engineered to increase probe response time and maximize the working life of your Bluelab pH pens and probes. The 250 ml bottle offers more solution per unit than the 120 ml format, making it the preferred choice for facilities with multiple instruments or high-frequency probe maintenance schedules. Sold in cases of 6 for convenient restocking.

For best results, store your pH pen or probe in KCl solution after every use and refresh the solution monthly. Proper storage is the single most effective way to protect your investment in Bluelab pH instruments and maintain measurement accuracy over time.

Key Features

• Formulated specifically for Bluelab pH pens and pH probes
• Potassium chloride (KCl) solution manufactured to laboratory standards
• Increases probe response time and extends probe lifespan
• 250 ml per bottle — ideal for multi-instrument or commercial operations
• Sold in cases of 6 for convenient bulk restocking
• Compatible with all Bluelab pH pens and probes

Frequently Asked Questions

What is Bluelab pH Probe KCl Storage Solution and why is it important?

Bluelab® pH Probe KCl Storage Solution is a potassium chloride (KCl) solution formulated to store and hydrate Bluelab pH probes and pens between uses. pH probes contain a glass membrane and a reference junction that must remain hydrated to deliver accurate, fast readings. Storing a probe dry or in plain water causes the reference junction to degrade, leading to slow response times and inaccurate pH measurements. KCl solution maintains the correct ionic balance inside the probe, preserving its accuracy and extending its usable life.

What is the difference between the 120 ml and 250 ml KCl storage solution?

Both the 120 ml and 250 ml formats contain the same Bluelab® pH Probe KCl Storage Solution formulated to the same laboratory standards. The 250 ml bottle simply provides more solution per unit, making it more economical and practical for operations that maintain multiple pH instruments or perform frequent probe care. The 250 ml format is the preferred choice for commercial growers, research facilities, and any operation with more than one or two Bluelab pH instruments in regular use.

How do I use KCl storage solution to care for my Bluelab pH probe?

After each use, rinse your pH probe with clean water, then place the probe tip into the storage cap or a small container filled with Bluelab® KCl Storage Solution. Ensure the probe tip is fully submerged. For probes stored long-term, refresh the KCl solution monthly. If a probe has been stored dry, soak it in KCl solution for at least 30 minutes before use to rehydrate the membrane and restore response time. Never store a pH probe in distilled water, tap water, or calibration solution.

Is this KCl solution compatible with all Bluelab pH instruments?

Yes. The Bluelab® pH Probe KCl Storage Solution is compatible with all Bluelab pH pens and probes, including the Bluelab pH Pen, Combo Meter, Guardian Monitor, pH Controller, Multimedia pH Meter, Leap pH Probe, Inline pH Probe, Replacement pH Probe, and Soil pH Pen. It is not intended for conductivity (EC) probes, which do not require liquid storage.

Where can I buy Bluelab pH Probe KCl Storage Solution 250 ml?

Bluelab pH Probe KCl Storage Solution (250 ml, case of 6) is available through Seres Ag, a professional hydroponic and CEA equipment supplier serving growers across the United States. Purchase directly at seresag.com. Seres Ag offers competitive pricing on Bluelab consumables, expert support, and US-wide shipping. For wholesale or bulk orders, contact the Seres Ag team through the website.