Embodiments of the invention provide a partition plate capable of efficiently cleaning a medicine remaining in a V-measure. The partition plate comprises: a slide member (8) which is installed so as to be capable of reciprocating along side plates and has a guide reception part (11); and a partition member (9) which has a guide part (18) removably guided by the guide reception part (11) of the slide member (8) and reciprocates together with the slide member (8) while maintaining such a state so as to be parallel with an end plate (5).