PocketChem BA is a palm size meter with the separate printer unit, and whole blood sample is available with easy operation. You can measure blood ammonia anytime, anywhere and by anyone without any care about increasing ammonia level. Needs 20?l of whole blood Only 124(W) x 85(D) x 38(H)mm, and 150g weight 2 x AA-sized dry battery for mobility and/or AC adapter Uses exclusive reagent strips without any pretreatment