Clinical Chemistry AACC Online Job Center
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

Clinical Chemistry 20: 1341-1343, 1974;
This Article
Right arrow Full Text (PDF)
Right arrow Submit an electronic Letter to
the Editor about this paper
Right arrow Alert me when this article is cited
Right arrow Alert me when eLetters are posted
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Ladenson, J. H.
Right arrow Articles by Davis, J. E.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Ladenson, J. H.
Right arrow Articles by Davis, J. E.

Clinical Chemistry, Vol 20, 1341-1343, Copyright © 1974 by the American Association for Clinical Chemistry

Systematic Bias between Blood-pH Instruments

Jack H. Ladenson 1, Carl H. Smith 2, David N. Dietzler 2, and J. E. Davis 1

1 Division of Laboratory Medicine, Washington University School of Medicine and Barnes Hospital, St. Louis, Mo. 63110.
2 Department of Pediatrics, Washington University School of Medicine and St. Louis Children's Hospital, St. Louis, Mo. 63110.

Measurement of tris(hydroxymethyl)aminomethane buffers and blood samples was used to compare the following commercial pH instruments: Corning Models 160 and 165, Instrumentation Laboratory, Inc. Model 313, and Radiometer Models E5021 and BMS 3MK2. These comparisons uncovered a systematic bias of 0.02 pH units in Instrumentation Laboratory, Inc. electrodes manufactured before April 1973. Other factors found to affect analytical results were the temperature of the saturated KCl salt bridge and reference electrode, the design of the temperature-control system, and the buffer used to standardize the instruments.

Submitted on December 28, 1973
Accepted on August 2, 1974






HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 1974 by the American Association for Clinical Chemistry.