The Collaborative International Dictionary of English v.0.48:

Blanchimeter \Blanch*im"e*ter\ (bl[.a]nch*[i^]m"[-e]*t[~e]r), n.
   [1st blanch + -meter.]
   An instrument for measuring the bleaching power of chloride
   of lime and potash; a chlorometer. --Ure.
   [1913 Webster]