EVACUATED AMPOULES CONTAINING CHEMICAL REAGENTS FOR USE IN COLORIMETRIC ANALYSIS

APPARATUS FOR FLUID ANALYSIS, NAMELY EVACUATED AMPOULES, ELECTRONIC PHOTOMETERS, COLORIMETRIC COMPARATORS, AND ANCILLARY EQUIPMENT FOR USE WITH EVACUATED AMPOULES, NAMELY AMPOULE TIP SNAPPERS, TITRATION CONTROLLERS AND MIXING VIALS; AND INSTRUCTION MANUALS THEREFOR