The vials are preferentially used on instruments of the following manufactures:Beckman, CTC, Gilson, Knauer,Shimadzu, Spark,Varian,VWR (Merck®)/Hitachi, etc. (Please have a look at the autosampler compatibility chart to confirm the models. 1.Short Thread Vials ND9 9mm Vial Caps and Septa why cooperate with us ?