chromometric

The chromometric method, or, as the authors name it, the nephelometric method, cosists essentially in burning the carbon as above, but the carbonic is conducted into a standard solution of basic acetate of lead (2 per cent), and estimating the turbidity produced, as compared with that produced by the carbonic acid evolved under similar circumstances by a known and nearly equal quantity of carbon (sugar), the difference between the two being estimated by a Mills's colorimeter.

1879 January 24, The Chemical News and Journal of Physical Science, page 39

The quantity of hemoglobin in blood as determined by chemic, chromometric, and spectro-photometric methods amounts to about 14 per cent. in man and 13 per cent. in woman.

1904, Albert Philson Brubaker, A Text-book of Human Physiology, page 246