ASTM_E_1948_-_98_2014.pdf

Designation:E194898(Reapproved 2014)Standard Guide forAnalytical Data Interchange Protocol for ChromatographicData1This standard is issued under the fixed designation E1948;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This guide covers the implementation of the Chromato-graphic Data Protocol in analytical software applications.Implementation of this protocol requires:1.1.1 Specification E1947,which contains the full set ofdata definitions.The chromatographic data protocol is notbased upon any specific implementation;it is designed to beindependent of any particular implementation,so that imple-mentations can change as technology evolves.The protocol isimplemented in stages,to speed its acceptance through actualuse.1.1.2 Specification E1947 contains a full description of thecontents of the data communications protocol,including theanalytical information categories with data elements and theirattributes for most aspects of chromatographic tests.1.2 The Analytical Information Categories are a practicalconvenience for breaking down the standardization processinto smaller,more manageable pieces.It is easier for develop-ers to build consensus and produce working systems based onsmaller information sets,without the burden and complexity ofthe hundreds of data elements contained in all the categories.The categories also assist vendors and end users in using theguide in their computing environments.1.3 The NetCDF Data Interchange System is the containerused to communicate data between applications in a way thatis independent of both computer architectures and end-userapplications.In essence,it is a special type of applicationdesigned for data interchange.1.4 The Common Data Language(CDL)Template forChromatography is a language specification of the chromatog-raphy dataset being interchanged.With the use of the NetCDFutilities,this human-readable template can be used to generatean equivalent binary file and the software subroutine callsneeded for input and output of data in analytical applications.2.Referenced Documents2.1 ASTM Standards:2E1947 Specification for Analytical Data Interchange Proto-col for Chromatographic Data2.2 Other Standard:NetCDF Users Guide33.Features of the Chromatographic Data InterchangeImplementation Guide3.1 The chromatographic data protocol consists of:(1)thedata contents(what is being transferred),and(2)the datacontainer(how it is being transferred).3.2 Analytical Information CategoriesTo make the stan-dardization process more manageable,fiveAnalytical Informa-tion Categories were defined:1.Raw Data2.Final Results3.Full Data Processing Method4.Full Chemical Method5.Good Laboratory Practices Information3.2.1 This guide covers implementation of Raw Data(Cat-egory 1)and Final Results(Category 2).The developmentcommittee has completed implementation and testing of infor-mation in these categories.3.3 Chromatography Data ElementsEach data elementspecifies a piece of information that is to be stored ortransferred to another system.A data element has a name,adefinition,and may have some default attributes,such as itsdatatype,the analytical information category to which itbelongs,and whether it is mandatory or recommended.A dataelement may also reference other data elements.3.4 NetCDF Data Interchange SystemNetCDF is a datainterchange system designed specifically for the requirementsof scientific data.It was developed to meet the requirements ofhigh-performance,large dataset interchange over networks,in1This guide is under the jurisdiction of ASTM Committee E13 on MolecularSpectroscopy and Separation Science and is the direct responsibility of Subcom-mittee E13.15 on Analytical Data.Current edition approved Aug.1,2014.Published August 2014.Originallyapproved in 1998.Last previous edition approved in 2009 as E1948 98(2009).DOI:10.1520/E1948-98R14.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3Available from Russell K.Rew,Unidata Program Center,University Corpora-tion for Atomospheric Research,P.O.Box 3000,Boulder,CO 80307-3000,http:/www2.ucar.edu.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 a machine-and network-independent way.NetCDF is imple-mented in the portable C programming language,and is madeto be available on all popular scientific computers and operat-ing systems.It achieves platform-independence through theuse of the XDR protocol for byte-stream encoding.XDR(eXternal Data Representation)was developed by Sun Micro-systems as part of the Network File System(NFS)and is nowin the public doma