Hamilton 80901 1705 LT Series 50μL Gastight Syringe with Luer Tip is the Gastight version of the original 700 series syringes.They are available in volumes from 10µl through 500µl. These syringes have precision-machined PTFE plunger tip that creates a leak-free seal. The plungers are replaceable. The 1705 LT Series Gastight syringes handle smaller volumes and are suitable to most applications requiring the handling of corrosive fluid transfers, pipetting, standards make-up, and dilutions. Needles must be purchased separately.