The CWT TITRETS test provides a safe and easy method for determining cooling water treatment levels. Each Titret ampoule contains premeasured, vacuum-sealed liquid titrant. A flexible valve assembly containing red indicator fits over the tapered tip of the ampoule. Sample is drawn into the ampoule until a color change from green to bright orange signals that the titration is complete. The liquid level in the ampoule corresponds to scale units marked on the ampoule’s outer surface. The scale units correspond to ppm cooling water treatment level.