Micro-Inserts for Crimp Neck Vials ND11 with wide opening 31 x 5mm, clear glass,. Vials - SepaChrom. RA0548, 0.1ml Micro-Insert,31 x 6mm,clear glass,15mm top (silanized) Conf 100pz. RA0547, 0.9ml Crimp Neck Micro-Vial,32 x 10mm,clear glass,concial Conf GC Autosampler Vials. several configurations to assist in maintaining sample 0.35 mL Glass insert, shell style, 6 x 31 mm ... Selecting Vials, Inserts, and Caps.