Rock Hill, S.C.-based Industrial Test Systems Inc., manufacturer of the first USEPA-recommended free chlorine test strip, announces the release of WaterWorks Salt Water Check. Design-ed to be a rapid, accurate alternative to conductivity meters and wet chemical tests, it offers the user an easy dip-and-read test alternative for determining concentrations of salt in water. Detection levels are 0 percent, 25 percent, 50 percent, 75 percent, 100 percent, 125 percent and 150 percent, or conductivity levels of 8 (x 104:S/cm).