Clear glass or polypropylene inserts for 8mm HPLC and GC autosampler vials are available in a variety of configurations with usable volumes from 125μL to 200μL. Pricing and Availability. aijiren Tech™ SUN-SRi™ Sun1 Vial Inserts 100 per pk. SUN-Sri Inserts are available in a variety of configurations to accommodate small sample size.