Chace Air Indicator Kit is used for quick estimations of air content in fresh concrete. Method is ideal for rapid field tests or to supplement air meter tests. A sample is placed in the measuring cup, and then inserted into the glass tube, the tube is filled with isopropyl alcohol. Percent air is determined by number of lines the alcohol drops in the stem of the vial after agitation. Kit includes Vial, Rubber Stopper, Cup measuring 6-1/4in length x 1-1/8in diameter (159x29mm), cleaning Brush, alcohol Squeeze Bottle, instructions and plastic case.