5mL Vial and Cap without Filter for Dionex® IC, 250pk: K4270: 0.5mL Vial and Filter Cap for Dionex® AS40, 250pk: K4280: 0.5mL Vial and Cap W/out Filter for Dionex® AS40, 250p: K4300: 7mL Vial with Pierce Cap for Dionex® AS50, 250pk: K4350: 1.5mL Vial and Cap for Dionex® AS50, 100pk: K4350-C: 1.5mL Caps Only for AS50, 100pk