Sewa Medicals Limited supplies Loss of Resistance Syringes. Sewa Medicals Limited offers various types of Glass Prefillable Syringe Components. The Loss of Resistance Syringes is available in Luer Tip & Luer Lock Tip and is useful for anaesthetic and other applications. The syringes are washed in demineralised water and packed in clean rooms. The barrel is frosted and the plunger fits snugly to give resistance free movement. The barrels as well as the plungers are ground to precision fit. The Loss of Resistance Syringes in 5ml and 10 ml capacities.