Some sizes available as gas tight or suitable for use with the Merlin Microseal. All needles are 42 mm long (except 8929V27, which is 56 mm) with a cone tip style designed specifically for use with Agilent (HP) autosamplers. SuperfleX Titanium-Nickel plungers will bend rather than break. Accuracy and reproducibility ±1%. Supplied with a certificate of traceability to international standards through NIST.