The four protocols, by price
Cold rinse ($4/tote). Single cold-water flood and drain. Removes loose residue. Appropriate when the prior contents were already water-soluble and the next use is non-contact.
Industrial wash ($9/tote). Two-stage caustic + potable rinse at 140°F / 160°F with mechanical agitation. Grade B equivalent — first-fill for industrial chemistries.
Food-grade four-stage ($22/tote). Cold soak, 145°F caustic flush, two 165°F potable rinses, 36-hour air dry, final pH test. Grade A equivalent.
Custom protocols. Available for specific chemistries (heavy oils, glycerin, honey decrystallization, urea solutions). Quoted case by case.