A complete kit designed for on-site study of fresh water environments, ponds, lakes, streams and marshes. Ideal for all educational levels. Carbon dioxide (0–50ppm), dissolved oxygen (0–10ppm) and hardness (0–200ppm) are measured by direct reading titrator tests. Nitrate and phosphate (0.2–1.0ppm), pH (3.0–10pH), and silica (0.5–10ppm) are measured by color comparison tests. Capable of fifty tests each within specified ranges. Includes water sampling bottles, 1.0ml calibrated titration mechanism, color comparators, test result report forms, reagents, three handbooks and aluminum-framed polyethylene carrying case.