The Woulff bottle is used in vacuum apparatus and serves to collect, clean and/or dry gases.– Tight closure due to standard ground joint – Vacuum resistant due to the wall thickness and geometry – Three standard ground joints for the import or export of gases – Optimum safety for working under pressure or vacuum – Fired-on, highly durable white print The Woulff bottle is used in vacuum apparatus and serves to collect, clean and/or dry gases.– Tight closure due to standard ground joint – Vacuum resistant due to the wall thickness and geometry – Three standard ground joints for the import or export of gases – Optimum safety for working under pressure or vacuum – Fired-on, highly durable white print