https://calc.injectionshop.com/ Injectionshop.com online photo doesn't look like the real Hospira BAC but has been confirmed many times by members of this forum to be the real deal and their price is competitive and service has always been best-in-class as are their shipping fees. This link is to their calculator which is my favorite cause it's the simplest I've found which is something I need... YMMVHas bateriostaic solution been pulled from Amazon? Where is a good source now?