The Purity Tester consists of a caustic reservoir (upper bulb) and a calibrated absorption buret (lower bulb) mounted to a PVC frame. The reservoir and buret are held to the frame with two neoprene covered mounting bands that are adjustable from the rear side of the frame. The standard buret is graduated in tenths of one percent, the total being one percent of the volume of the buret. The caustic reservoir has a line indicating the level to which caustic solution should be added, and which volume is slightly in excess of the capacity of the absorption buret. Furnished with protective metal case.
