caa a22 4500 378886428 CHVBK 20180305123443.0 cr unu---uuuuu 161128e200406 xx s 000 0 eng 10.1515/REST.2004.94 doi (NATIONALLICENCE)gruyter-10.1515/REST.2004.94 Evaluating the Effects of Treatments on Iron Gall Ink Corroded Documents. A new analytical methodology [Elektronische Daten] [Jana Kolar, Matija Strlič] Evaluation d'une méthode visant à stabiliser les documents corrodés par la rouille: une nouvelle approche méthodologique The development of a suitable conservation treatment for ink corrosion requires a thorough evaluation of a large number of model papers and inks as well as originals. While the currently used bursting strength evaluation gives an estimate of failure of documents along the corroded ink lines, in real-life situations, its repeatability is low and numerous measurements need to be performed to obtain a reasonably reliable value. It is suggested that model iron gall ink corroded papers may also be studied using viscometry, which is a simple, reliable method requiring only a small amount of sample. For original documents, where sampling for accelerated ageing is very restricted, scanning device assisted brightness determination of the verso of the writing is proposed for the evaluation of the effects of conservation treatment on paper during accelerated ageing. However, several parameters influencing colour formation and evaluation on the verso, including the rate of migration, paper density, surface furnish etc., prevent the method from being used to compare different papers before these effects are fully assessed. © 2004 K. G. Saur Verlag GmbH, Ortlerstr. 8, D-81373 München Kolar Jana National and University Library, Turjaška 1, SI-1000 Ljubljana, Slovenia, Tel: +386 1 2001114, Fax: +386 1 2513052. E-mail: jana.kolar@nuk.uni-lj.si aut Strlič Matija University of Ljubljana, Faculty of Chemistry and Chemical Technology, Aškerčeva 5, SI-1000 Ljubljana, Slovenia, Tel. +386 1 2419174, Fax: +386 1 2419220. E-mail: matija.strlic@uni-lj.si aut Restaurator Walter de Gruyter GmbH & Co. KG 25/2(2004-06), 94-103 0034-5806 25:2<94 2004 25 REST https://doi.org/10.1515/REST.2004.94 text/html Onlinezugriff via DOI 1 research article jats NATIONALLICENCE 856 40 https://doi.org/10.1515/REST.2004.94 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Kolar Jana National and University Library, Turjaška 1, SI-1000 Ljubljana, Slovenia, Tel: +386 1 2001114, Fax: +386 1 2513052. E-mail: jana.kolar@nuk.uni-lj.si aut NATIONALLICENCE 700 1- Strlič Matija University of Ljubljana, Faculty of Chemistry and Chemical Technology, Aškerčeva 5, SI-1000 Ljubljana, Slovenia, Tel. +386 1 2419174, Fax: +386 1 2419220. E-mail: matija.strlic@uni-lj.si aut NATIONALLICENCE 773 0- Restaurator Walter de Gruyter GmbH & Co. KG 25/2(2004-06), 94-103 0034-5806 25:2<94 2004 25 REST CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-gruyter