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I'm currently setting up a brewery and have been sorting through the equipment that was purchased for this brew pub before I came on-board. In doing so, I've only identified a single-vessel CIP system (with 80L tank & skid-mounted pump) for cleaning, rather than a double-vessel CIP system, which is what I've always used (one for acid rinsing & one for caustic cleaning solutions). To my knowledge, caustic solutions are more beneficial at 70?. That being said, what's most optimal for this type of setup? Is using a cold caustic solution acceptable and, if so, should I increase both the time and concentration of the caustic for this process? Alternatively, should I purchase an additional tank equipped with temperature control (including a heating element) for caustic use only?

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Optimal caustic performance is typically around 55-60?, so if possible, heat your caustic solution above this temperature. Never use chlorinated caustic at temperatures higher than 65? and always check with your chemical manufacturer to ensure you're using the correct temperatures during this process. Be sure to thoroughly rinse all chlorinated substances from the CIP system before using an acid, and if you choose to add a heating element, be sure to avoid copper and only use ones that are either stainless-clad or have nickel-alloy element(s). 
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