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Permanent-record paper

In connection with a program at the National Bureau of Standards, sponsored by National Archives and Records Service (33), on the development of specifications for permanent record papers, some handsheets were made from a pulp in which the carboxyls were covered with aluminum. Just before the sheet was formed, some calcium carbonate was added to the headbox. Thus, the cellulose had aluminum on the carboxyls, a characteristic of instability, and the paper had a calcium carbonate filler, a characteristic of stability. [Pg.91]

Definitions are urgently needed. For example, what is permanence An answer to this question for paper records is given in each of the four ASTM specifications for permanent-record papers. [Pg.291]

Standards Organizations of Special Interest to Archivists. Three standards organizations are of interest to archivists ASTM, ANSI, and ISO. ASTM stands first in importance for the following reasons (1) The wide range of technical expertise in many materials and product areas should cover most areas of interest to archivists. (2) The organizational structure of ASTM provides for the development of almost any kind of standard. (3) If ASTM standards are determined to be of national interest, they can become ANSI standards because ASTM follows a full consensus procedure in the development of standards. (4) Four specifications for permanent-record papers already have been developed through ASTM Committee D-6, Paper and Paper Products (20). [Pg.296]

ASTM Specifications. Four specifications for permanent-record paper (20) were developed at NBS through research sponsored by the National Archives and Records Service (NARS), other U.S. government agencies, and SAA. These also are ANSI specifications. [Pg.306]

JCP Specifications. The U.S. Congressional JCP has published six government paper-specification standards for permanent-record paper (32). These specifications were written in the tradition of cotton or linen fiber, high folding endurance, and high cellulose purity as indicated by high a-cellulose content and low copper number. [Pg.307]

Specifications for Permanent Record Papers, ASTM, D 3208 Manifold Papers, D 3290 Bond and Ledger Paper, D 3301 File Folders for Storage, D 3458 Copies from Office Copying Machines Annual Book of ASTM Standards, Vol. 15.09,1985. [Pg.309]

There are many industrial applications in which permanent records (extending over long periods of time) of the instrument readings are required. Chart recorders of various forms are available for this purpose. The most common general-purpose unit is the digital strip chart recorder, in which the input signal is used to drive the movement of a recording arm that passes over a paper chart in the y-direction. At the same time, the chart is... [Pg.245]

Stop the reaction by pouring off and discarding the staining solution, and rinse the membrane briefly m two changes of distilled water. The membrane can then be dried between filter paper and, once diy, can be photographed for a permanent record. The image will remain on the blot if it is stored in the dark, but otherwise will fade with time... [Pg.213]

The output from the spectrometer is the number of counts for each velocity increment of the spectrum. For graphical display and analysis, these data are then recorded on an X-Y recorder (X, velocity Y, counts) either directly in digital form or after conversion to analog form. In addition, a permanent record of the data is provided by transfer to a teletypewriter, a serial printer, a paper tape, and/or a magnetic tape recorder. [Pg.168]

The other piece of mandatory equipment that has changed recently is the data acquisition computer. Previously, every inexpensive HPLC had to have a strip chart recorder. The price differential between a computer-generated annotated chromatogram and a strip chart has dropped to the point that it doesn t make sense not to have that capability in the lab. You may only integrate 1 run out of 10, but when you need it, the capability will be there. Try and avoid a computer system using a thermal or inkjet printer. The paper does not store well for a permanent record. Often, it will be necessary to photocopy the keeper chromatograms for further reference and archival storage. [Pg.17]

A century has passed since the field of chemical engineering became formalized as an academic discipline. To mark this occasion, the Department of Chemical Engineering at the Massachusetts Institute of Technology sponsored a celebration on October 5-9, 1988 consisting of a Centennial Symposium of Chemical Engineering and an Alumni Convocation. This volume is a permanent record of all of the presentations and discussions at the symposium together with several papers presented at the convocation. [Pg.616]

T he permanence of paper is important in applications which require the retention of significant use properties over an extended period. Legal and administrative records, historical documents, books of permanent value, art works, and archival materials must retain their integrity and utility for many decades or centuries. The extent of permanence sought is variously stated to be from 100 to 500 years although numerical values of this kind are very imprecise. [Pg.276]

SAA Specification for Carbon Copies. The Paper Research Committee of SAA has developed a specification for permanent-durable paper for carbon copies (manifold paper) (34). This specification is patterned after Type I of ASTM D 3208, Specification for Manifold Paper for Permanent Records. The requirements are much tighter, however, and an accelerated-aging test has been added. [Pg.307]

Next, factually describe the events as you know them. This ties into the listening skills previously described. Leave no detail out. Ask whether the other party has anything to add or clarify. If the situation is serious enough, such as in a case of a medicafion error, take notes. You do not need to ask the person for permission fo do this. Simply take out a pen and paper and write down pertinent facts. This way, you have a permanent record of the events in case they need to be specifically recalled lafer. It also prevents the problem of he said/she said fhaf can occur in unpleasant situations. [Pg.130]

Keep a clear and concise record of the laboratory work. The notes should be written as soon as the experiment has been per-forned, and care should be taken to have the original record, made during the course of the experiment, of such a character that it serves as the permanent record of the work. Notes should not be taken on loose pieces of paper and afterward written out in the notebook they should be written carefully in good English, and should state briefly what was done and what was observed. It is necessary for the student to recognize what the experiment is to teach—why he was asked to do it. If the... [Pg.1]

In order to place on permanent record the precise contribution to this book (and it is, of course, the major one) made by the late Professor Coulson, copies of the actual recordings will be deposited with the Coulson papers in the Contemporary Scientific Archives Collection of the Bodleian Library, University of Oxford, and it is hoped that the transcripts will also be available, either in the above Collection or via Mrs Coulson s personal archives. [Pg.104]

Two-dimensional paper chromatography of standard mixtures produces chromatography maps that may be kept as permanent records. Normal biological samples, e.g., urine, are run, and the maps are retained so that patterns of certain important compounds, such as amino acids, are available for reference. In this way, abnormal spots can be identified easily when they occur. [Pg.402]

An engineer s notebook is usually a bound book with graph paper and lined paper with numbered pages and a place to write important information such as the name, date, and title of the sketch. This information should be written with an ink pen freehand technical sketches should be drawn in pencil. This book becomes a permanent record of the engineer s concepts and ideas (see Figure 4-16). [Pg.101]

Remove excess liquid by placing the membrane onto Whatman paper and place the stained membrane between transparent polythene sheets. Photocopy the membrane to obtain a permanent record of the staining pattern. [Pg.276]

Berlet, H. H. (1966). Permanent records of thin layer chromatograms on transparent paper. J. Chromatogr. 21 484-487. [Pg.190]


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