HPLC Columns And Peek Union. Established as a Sole Proprietorship firm in the year 2017, we “Ryan Lab Enterprises” are a leading Manufacturer of a wide range of HPLC Columns, HPLC Column End Plugs, Peek Ferrule, Peek Union, Vial Inserts, Glass Vials, Glass Vial Caps, Peek Tubing, etc. We Offer: