Dismounted operations make it difficult for Warriors to drink and eat enough. The Nutrient Delivery System (NDS) is an add-on to collapsible bladder with drink tube personal hydration systems, and is intended to facilitate fluid and on-the-move nutrient intake. Tests were performed using an artificial sipping system and carbohydrate-beverage concentrates (CHO) to characterize NDS performance attributes. A variety of CHO formulations were also studied to define the ideal beverage concentrate for maximizing system efficiency. The NDS performed optimally with concentrate bag oriented spout down with the top of bag positioned 6-inches below the bite valve. Sip to sip coefficient of variation as measured by sip-to-sip changes in % solids was 2 [1.5]%. At faster sipping rates (13-14 ml/sec) the blended drink was 4 % more concentrated compared to a lower sip rate (7-9 ml/sec). A concentrate viscosity of 0.022 Pa.S. created the desired dynamic range (0 to 7% CHO) and efficiency ( 1 Liter of mixed drink from 100 ml concentrate). The NOS is a valid and reproducible system for mixing drinks with a PHS.