BWT - Bestmax - Filter Cartridge - Size XL Subtype- Gift Voucher • Programmable Doses - allowingHARD WATER AREAS FILTRATION ONLY. Description BWT Bestmax is a simple, practical, all round filtration solution developed for the diverse requirements of the food service sector. It provides superb quality water for a full coffee taste, is also ideally suited for use in vending equipment and produces perfect, pure steam for ovens and combi steamers. The new High Efficiency Technology (HET) provides even more effective water optimisation, resulting in