1940-1949, 1940s Peach Evening Gown and Jacket, acetate fiber

Source: Ohio State University Historic Costume & Textiles Collection, http://fashion2fiber.osu.edu/items/show/1806 Note: in some cases, identification of fiber content is not achievable by a single image alone. It may be necessary to look at the accumulation of evidence provided by a series of images , each employing different microscopic techniques. The following set of images were indicative of acetate fiber but this was confirmed by a microsolubility test; a fiber specimen dissolved in acetone.

001.2001.20.1b.8-08-2014.BF.200X,MM.unk.dressweft

Source manufactured Accession Number HCT.2001.20.1 Title acetate fiber, bright field, 200X Image Identification information 001.2001.20.1b.8-08-2014.BF.200X,MM.unk.dressweft Image capture digital Date of image capture 08/08/14 Microscopist K. Jakes Microscope Zeiss Axioplan Mounting agent and RI Meltmount RI 1.539 Microscopic technique Brightfield Striations no striations apparent delustrant apparent comments confirmation as acetate not possible from single image

002.2001.20.1b.8-08-2014.POL.200X,MM.unk.dressweft

Source manufactured Accession Number HCT.2001.20.1 Title acetate fiber, polarized light, 200X Image Identification information 002.2001.20.1b.8-08-2014.POL.200X,MM.unk.dressweft Image capture digital Date of image capture 08/08/14 Microscopist K. Jakes Microscope Zeiss Axioplan Mounting agent and RI Meltmount RI 1.539 Microscopic technique Polarized light Striations no striations apparent delustrant apparent comments low polarization color

003.2001.20.1b.8-09-2014.BF.200X,MM.unk.dressweft

Source manufactured Accession Number HCT.2001.20.1 Title acetate fiber, bright field, 200X Image Identification information 003.2001.20.1b.8-09-2014.BF.200X,MM.unk.dressweft Image capture digital Date of image capture 08/09/14 Microscopist K. Jakes Microscope Zeiss Axioplan Mounting agent and RI Meltmount RI 1.539 Microscopic technique Brightfield Striations no striations apparent delustrant apparent comments confirmation as acetate not possible from single image

004.2001.20.1b.8-09-2014.DIC.200X,MM.unk.dressweft

Source manufactured Accession Number HCT.2001.20.1 Title acetate fiber, differential interference contrast, 200X Image Identification information 004.2001.20.1b.8-09-2014.DIC.200X,MM.unk.dressweft Image capture digital Date of image capture 08/09/14 Microscopist K. Jakes Microscope Zeiss Axioplan Mounting agent and RI Meltmount RI 1.539 Microscopic technique differential interference contrast Striations some striations apparent delustrant apparent comments low polarization color

004.2001.20.1b.8-09-2014.POL.200X,MM.unk.dressweft

Source manufactured Accession Number HCT.2001.20.1 Title acetate fiber, polarized light, 200X Image Identification information 004.2001.20.1b.8-09-2014.POL.200X,MM.unk.dressweft Image capture digital Date of image capture 08/09/14 Microscopist K. Jakes Microscope Zeiss Axioplan Mounting agent and RI Meltmount RI 1.539 Microscopic technique Polarized light Striations some striations apparent delustrant apparent comments low polarization color

005.2001.20.1b.8-09-2014.POLFOR.200X,MM.unknegative.dressweft

Source manufactured Accession Number HCT.2001.20.1 Title acetate fiber, polarized light, first order red plate added, 200X Image Identification information 005.2001.20.1b.8-09-2014.POLFOR.200X,MM.unknegative.dressweft Image capture digital Date of image capture 08/09/14 Microscopist K. Jakes Microscope Zeiss Axioplan Mounting agent and RI Meltmount RI 1.539 Microscopic technique Polarized light, first order red plate added Striations no striations apparent delustrant apparent sign of elongation subtraction color perpendicular to long axis of first order red plate, positive sign of elongation sign of elongation addition color parallel to long axis of first order red plate, positive sign of elongation

006.2001.20.1b.8-09-2014.DIC.200X,MM.unknegative.dressweft

Source manufactured Accession Number HCT.2001.20.1 Title acetate fiber, differential interference contrast, 200X Image Identification information 006.2001.20.1b.8-09-2014.DIC.200X,MM.unknegative.dressweft Image capture digital Date of image capture 08/09/14 Microscopist K. Jakes Microscope Zeiss Axioplan Mounting agent and RI Meltmount RI 1.539 Microscopic technique differential interference contrast Striations some striations apparent delustrant apparent comments low polarization color

001.2001.20.1b.8-09-2014.BF.200X,MM.unk.dresswarp

Source manufactured Accession Number HCT.2001.20.1 Title acetate fiber, bright field, 200X Image Identification information 001.2001.20.1b.8-09-2014.BF.200X,MM.unk.dresswarp Image capture digital Date of image capture 08/09/14 Microscopist K. Jakes Microscope Zeiss Axioplan Mounting agent and RI Meltmount RI 1.539 Microscopic technique Brightfield Striations some striations apparent delustrant apparent comments confirmation as acetate not possible from single image

001.2002.20.1b.8-09-2014.POL.200X,MM.unk.dresswarp

Source manufactured Accession Number HCT.2001.20.1 Title acetate fiber, polarized light, 200X Image Identification information 001.2002.20.1b.8-09-2014.POL.200X,MM.unk.dresswarp Image capture digital Date of image capture 08/09/14 Microscopist K. Jakes Microscope Zeiss Axioplan Mounting agent and RI Meltmount RI 1.539 Microscopic technique Polarized light Striations some striations apparent delustrant apparent comments low polarization color

003.2002.20.1b.8-09-2014.POLFOR.200X,MM.unknegative.dresswarp

Source manufactured Accession Number HCT.2001.20.1 Title acetate fiber, polarized light, first order red plate added, 200X Image Identification information 003.2002.20.1b.8-09-2014.POLFOR.200X,MM.unknegative.dresswarp Image capture digital Date of image capture 08/09/14 Microscopist K. Jakes Microscope Zeiss Axioplan Mounting agent and RI Meltmount RI 1.539 Microscopic technique Polarized light, first order red plate added Striations no striations apparent delustrant apparent sign of elongation addition color parallel to long axis of first order red plate, positive