Oral syringe with safety-stops. Accurate dose every time with color-coded dial. Easy view calibrations. Color-coded dial dose is in teaspoons (tsp); please note the following for conversion to milliliters (mL): Blue: 0.5 tsp = 2.5 mL. Orange: 1 tsp = 5 mL. Green: 1.5 tsp = 7.5 mL. Purple: 2 tsp = 10 mL.