disinfects

Provides a fast 1-minute universal contact time from an alcohol-free hydrogen peroxide formulation

warble tones

Runs on one 3V Lithium battery (included)

Tucked into its carrying case (included)

ISHIHARA Test Chart Books for Color Deficiency (10 Plate) CA-WA disinfects(10 Plate) 4 symbols and 6 trails Accepted by leading authorities as a simple and accurate method for discovering congenital color blindness of two types: total color blindness and red green blindness, each in two forms, complete and incomplete. Includes four special plates for tests to determine the kind and degree of defect in color vision. Makes use of the peculiarity that in red green blindness, blue and yellow appear remarkably bright compared