The HSW Norm-Ject syringe is a unique 2-part syringe that is latex-free and uses no rubber or silicone lubricant. These syringes are the choice for any situation requiring an inert hypoallergenic syringe. Particularly suited to IVF, embryo transfer, AI, chromatography and other sensitive procedures. ISO 9000 registered, CE mark, FDA registered. Air-Tite