Zbigniew Dłubak Archival work Cellulose-Acetate Negatives Organised Cellulose-Acetate Negatives Organised Cellulose-acetate negatives are housed in archival polyester pockets or in greaseproof paper attested and dedicated for archival purposes. The negative sheets are housed in archival photo boxes. Negatywy octanocelulozowe w pierwotnym opakowaniu Przepakowywanie negatywów octanocelulozowych