Agilent, G4513-60561, ALS syringe, Blue Line, 500 µL, fixed needle, 23/42/cone, PTFE-tip plunger

The Blue Line 500 µL autosampler syringe is a gas-tight liquid-handling component for automated GC and GC/MS sample preparation and injection. It combines a fixed 23-gauge straight needle with a 42 mm length, cone-style tip and PTFE-tipped plunger. The syringe accommodates controlled liquid handling in the recommended 50–400 µL injection range and is intended for use with the enhanced sample handling syringe carriage. A PTFE plunger tip improves the seal inside the barrel, supporting repeatable aspiration and delivery when the syringe is properly maintained. This format is useful for larger-volume sample transfers, dilution procedures and internal-standard addition within validated autosampler workflows. Check the syringe carriage before installation; it is not a direct replacement for every standard autosampler syringe. Flush the barrel and needle with a compatible solvent between samples to reduce carryover, and inspect plunger movement for binding or wear. Do not bend the fixed needle or force the plunger through dried residues.