the weight you tare is inclusive, for 100 grams is a physical limit. putting more weight than the scale can handle on it, can potentially damage (the precision of) your scale, so be careful with that. know the amount you tare. i have the i101 and i'm satisfied with it, only downside is the 100 grams limit, with a bottle on the scale that limit is reached all too soon. i sometimes take off the aluminium plate, it's weight is on top of the 100 grams limit, so taking it off will give me just a little more room, about 23.5 grams.