31/7/2020 · Aijiren's 8-425 HPLC Vials can only be used for Micro-inserts with an outer diameter of 5mm and a capacity of 150/250uL. Aijiren produces 9mm, 10mm and 11mm HPLC Vials with micro Insert with an outer diameter of 6-7mm.If you need to purchase Micro-insert, please leave a message on our website or contact our online customer service and we will