Up Easy Lift Cushion (200-340 lbs.) Blood Drawing Chairs Accepted by leading authorities as Ships From:FL, USA Wall Transformers 9811 Guaiac impregnated paper allows

Up Easy Lift Cushion (200 340 lbs.) Blood Drawing Chairs Accepted by leading authorities as Ships From:FL, USA Wall Transformers 9811 Guaiac impregnated paper allows Accepted by leading authorities as a simple and accurate method for discovering congenital 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 with red and green * Color plates encased in specially designed album type books for ease of handling * Detailed instructions included The EasyPulse POC 3 is the smallest unit on the market