The Hamilton® TLC Syringe manufactured by Hamilton Co. come with needle coated from the point for 3/4" with a PTFE-coating which reduces the surface tension between the needle and the liquid making it ideal for reproducible sample spotting.
Specification
Autoclavable: Yes Temp. range: 10-115°C (50-239℉) Pressure: 2000 psig I.D. × O.D.: 0.343 mm × 6.60 mm Volume: 5 μL