Both can be tared to the full range and have an auto shut-off to conserve the battery life.
2
If the substance to be weighed changes in composition on strong heating, it is necessary to employ a tared filter, i.e.
3
In the case of a tared filter it is weighed repeatedly until the weight suffers no change; then knowing the weight of the filter paper, the weight of the precipitate is obtained by subtraction.