Viper RT500G Nickel Safe Ice Machine CleanersViper RT500G Until now, ice machine cleaners were nothing more than low tech phosphoric acid. Our Viper Ice Machine cleaner is formulated with an advanced blend of organic acids that will remove more scale faster than any other product of its kind. It is a stronger acidic cleaner and is lower in toxicity, non fuming, less corrosive and environmentally preferred over phosphate based chemicals. Features : Approved for Nickel Plated Evaporators Removes