The BACTIVATOR®Ⓓ LS is used for automatic continuous pre activation, growth, and addition of beneficial bacteria cultures, Bacta-Pur® XLG. The improved design of BACTIVATOR®Ⓓ LS, Series 4 features the user friendly bag-in-box Bacta-Pur® XLG-KIT that could be quickly and easily connected to the BACTIVATOR®Ⓓ to serve as products supply reservoir. The bag-in-box packaging preserve product quality for long periods before and after opening.