Potassium expiration?

[Big E]

I have some Brightwell potassium............bottle was opened and is 3-4 yeras old. Is this still ok to use?

Guaranteed Analysis
Potassium (min) 2,366 mg/oz. (80,000 ppm)

Ingredients
Purified water, Potassium sulfate, Potassium chloride.

http://brightwellaquatics.com/products/potassiont.php

 

[BCSreef]

I have some Brightwell potassium............bottle was opened and is 3-4 yeras old. Is this still ok to use?

Guaranteed Analysis
Potassium (min) 2,366 mg/oz. (80,000 ppm)

Ingredients
Purified water, Potassium sulfate, Potassium chloride.

http://brightwellaquatics.com/products/potassiont.php

It should be fine.

 

[Randy Holmes-Farley Verified Community Expert]

I agree that it will last forever, aside from possible evaporation that will make it possibly more concentrated.

 

[Big E]

Ok thanks!