KIMAX Babcock bottle used for testing butter fat content. Calibrated for a 9 gram sample, to 50%. Etched vertical line used to anchor calipers is centered in a contrasting darkened band which makes visualization easier. Scale is permanent brown stain. Marked "Sealed 3" for use in states requiring this special marking. Designed for use in APHA 15.8 or AOAC 920.111 test procedures.