Aginsky v n some new ideas for dating ballpoint inks

02 Aug

Losses of up to 75% of solvents were observed after a few seconds.

This work presents a wide picture of the ink dating field, warns about potential shortcomings and also proposes some solutions to avoid reporting errors in court.

Humecki // Proceedings of the International Symposium on Questioned Documents, FBI Academy, Quantico, VA, 1985.

The high-performance thin layer chromatography (HPTLC).

Standard guide for test methods for forensic writing ink comparison.

Review of ink dating methods: Is it possible to determine the age of a document through ink analysis? , - , , , : : - ( -) , - [3, 4]; : , [3 ( 5]; : , [5]. Liquid extraction followed by splitless gas chromatography/mass spectrometry in the selected ion mode was used to measure the quantitative decrease of solvents from ink entries made with a blue Parker ballpoint pen.Quantities of ethoxyethoxyethanol, dipropylene glycol, phenoxyethanol and phenoxyethoxyethanol were studied in ink entries up to 1.5 years old, thus allowing to calculate aging curves for this particular pen. (1D) "A Guide to Interviews," by Nancy Bell, Judith Chantry, and Candy Kuhl. It gives nine "interview tips," ten typical questions that the applicant may be asked, and tells what to do if rejected--or accepted. Published by and available from the Institute of Paper Conservation, Leigh Lodge, Leigh, Worcester, WR6 5LB, England, for £10. This article compares the performance of one of the starch-based hot-melts with that of EVA hot-melt adhesive, and illustrates for us how recycling has given the concept of reversibility a place in the paper industry. The book contains nearly 5,000 names and 50,000 addresses of 19th century artisans and craftspeople, with occupations, firm names, and so on, to help in dating undated books and identifying the people associated with them. Issued by Biblioteca Nacional de Venezuela, Centro Nacional de Conservación Documental, Caracas. The four essays are: "La Estructura de la Encuadernación en el Códice: Reseña de Tipos Históricos." This is a translation, printed with permission but without attribution, of Frost's "Codex Format Bookbinding Structures: A Survey of Historical Types," from the . Most of the essays are about the history of the book trade, book collectors, cover decoration and other matters of interest to historical bibliographers. Published in a limited edition by Francis Wakeman, Kidlington, Oxford, England, together with Oak Knoll Books, New Castle, DE, 1993. This paper is hard to understand and evaluate, because it sometimes omits from the tables or does not clearly identify such information as the aging conditions and the placement and identity of the samples for which test results are reported. The best single predictor of color change was found to be dew point. (3B1.9) "A Closer Look at Iron Gall Ink Burn," by Robien van Gulik and N. (3B2.12) "Polarized Light Microscopy in Conservation: A Personal Perspective," by Walter Mc Crone. The polarized light microscope (PLM) permits complete characterization and identification of a greater variety of substances than any other microscope. This article is a fairly detailed guide to assembling a portfolio, writing an inquiry letter and application form, giving references and a resume, finding out what the employer really wants, and more. (2H2) "Ageless Oxygen Absorber: Chemical and Physical Properties," by David W. They are probably trying to introduce it on the market now. 32), does not give date of publication, but does say that it is 299 pages long, clothbound. Contact the Bibliographic Society of America, Box 397, Grand Central Station, New York, NY 10163. Contributors include Nicolas Barker, Giles Barber, Mirjam Foot, and Jan Storm Van Leeuwen. Unbuffered tissue did not have a significant effect under any conditions. The color change of paper aged under various conditions of temperature and relative humidity is studied, and the effectiveness of washing for removing colored degradation products is assessed. Contact Luis Nadeau, Box 7, Site 4, Fredericton, NB, Canada E3B 4X5 (Internet: [email protected] ca; fax 506/450-2718; Hamcall VE9LN). Further research is being done at the Central Research Laboratory in Amsterdam.The aim of this work was to study the drying process of ballpoint ink, characterised by the disappearance of volatile solvents from the ink entry.Phenoxyethanol is of particularly high interest as it is found in more than 80% of the blue ballpoint pens at different concentrations.