Spoke with the folks at American Marine (Selcon Mfg)today and asked about the life span of their product. Once opened, he estimated a 9-12 month life span (based on this, I will probably toss out the bottle 9-12 months after purchase). Though refrigeration will not harm the product, he recommended against it as the ingredients may not go back into solution when shaken. They suggested a cool, dry ambient location for storage. When you notice black spots throughout the bottle, it has gone bad and should be tossed.
Hope this info is of use!
Loren
Hope this info is of use!
Loren