Buy 1L GBL – Premium-Quality GBL Solvent for Professional and Industrial Applications Buy 1L GBL Purified for dependable use in authorized industrial, automotor, manufacturing and research applications. Our compact one-litre package is suitable for customers who require a manageable quantity for controlled production, product evaluation, formulation development or routine professional cleaning operations. Gamma-butirolactona, commonly known as GBL, is a versatile …