Nickel has long been known for its superior inertness relative to even 316 stainless steel. Through years of development, Entech has created a pure Nickel ferrule that improves overall performance when compared to any other ferrule currently used for whole air sampling and analysis. The unique properties of Nickel create the best combination of inertness, low carryover, and replaceability, so you never have to throw away a fitting, flow controller, (or worse) a 6L canister because your ferrule or ¼” Swagelok style nut failed you. With Entech’s new Nickel Ferrule Technology (NiFTY), you can have the durable and non-absorptive performance of stainless steel ferrules, with the ability to remove and replace ferrules should a problem develop with the compression nut or fitting. The patent pending design creates a semi-permanent ferrule connection, so the ferrule will never fall off unintentionally. NiFTY ferrules can be pulled off for easy replacement with a special tool developed by Entech. Since pure Nickel is softer than 316 stainless steel, NiFTY ferrules can be removed without damaging the underlying stainless tubing, ensuring that your investment will go right on working for you long into the future.