Orange Total Dose: A low dead space 25G, 25mm (1 inch) detachable hypodermic needle.
Low dead space needles have significantly less dead space than both standard detachable needle and syringe combinations, and standard needle / reduced dead space syringe combinations.
Total Dose Yellow 25 G 25mm (1 inch) needles were designed for the Unifix range and total dose compatible syringes. They also fit some other 2ml (and larger) syringes for detachable needles.