3. Vials has a unique batch number for easy tracking. 4. All vials made by brosilicate type 1 glass. 5. All vials are produced in 100,000 class grade clean rooms to avoid any contamination. 6. Ultra-clean vials for HPLC- MS/GC-MS/MS-MS analysis. 7. With ISO9001, SGS, BV, COA, COC Certificates. 8. Short lead time with enough stock. 4. OEM&ODM