What is the potassium chloride for?

Potassium chloride solution is used to protect the pH meter probe. Once you use your pH meter for the first time, the tip of the probe should be immersed in a solution of potassium chloride during long periods that you don't use the meter

are these solutions NIST traceable ?

Not even close. They were off by 0.3 units. Completely worthless...

Is the electrode glass? If the electrode solution is low can you add solution to it? If so what is the electode solution?

I don't believe so, it looks plastic but I don't want to tap on it or touch it as your not supposed to. By electrode fluid are your referring to the small jar of neutral? if so yes you can add more to the protective cap and store it upright. the key is to not to let it dry out

What is the shelf life for these solutions?

There is a two year shelf life for the solutions in this set.

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🧪 Calibrate like a pro, measure like a boss!

SAFETY FIRST - Comes with detailed instructions and MSDS for safe handling and compliance in professional labs.
GENEROUS VOLUME - Each 500ml bottle ensures long-lasting supply, minimizing downtime and frequent reorders.
COMPLETE CARE KIT - Includes a dedicated pH electrode storage solution to prolong sensor life and maintain peak performance.
TRIPLE POINT ACCURACY - Calibrate your pH meter with industry-standard buffers at 4.00, 7.00, and 10.00 for flawless precision.
READY FOR PROFESSIONALS - Ideal for lab managers and quality control experts who demand reliable, repeatable results every time.

The ALDON Innovating Science pH Calibration Solution Kit offers precise buffer solutions at pH 4.00, 7.00, and 10.00, plus a specialized electrode storage solution, all in convenient 500ml bottles. Designed for professional-grade accuracy and sensor longevity, this kit includes safety documentation to ensure proper handling in any lab or industrial setting.

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