Polystyrene ESR tubes.
نویسندگان
چکیده
منابع مشابه
Polystyrene tubes in clinical chemistry with special reference to iron.
Some manufacturers claim that polystyrene test tubes which are intended to be used once only, have the additional advantage of being chemically clean. Marks (1967), in a memorandum to the British Standards Institute made on behalf of the Association of Clinical Biochemists, proposed that sodium (or potassium) might be used as an indicator of contamination: ion-free water left to stand in the co...
متن کاملSegmental Rotational Diffusion of Spin-Labeled Polystyrene in Dilute Toluene Solution by 9 and 250 GHz ESR
A copolymer of styrene containing less than 5 mol % of chain units spin-labeled by attachment of the nitroxide via a short tether has been synthesized. ESR spectra of dilute toluene solution of the copolymer have been obtained using 9 and 250 GHz ESR. Parameters characterizing polystyrene segmental rotational diffusion in toluene solution over a broad temperature range have been determined from...
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ABSTRACT Background and Objective: Prostate specific antigen (PSA) is considered as one of the most reliable biomarkers of cancer and other known prostate diseases. In the present study, solid phase sandwich immunoradiometric assay was used to measure the amount of PSA. In this type of measurement, a pair of anti-PSA antibodies on the solid phase and la...
متن کاملRadioimmunological determination of total thyroxin by antibodies immobilized on polystyrene tubes coated with styrene-maleic anhydride copolymers.
In this new technique for preparing activated polystyrene tubes for assay of human thyroxin (T4) we coated plastic with styrene-maleic anhydride copolymers. The quantity of antibodies immobilized on these tubes was considerably greater than on non-activated polystyrene tubes, and the time required for immobilization was shortened. Calibration curves were plotted, and determination of total T4 i...
متن کاملDual fluorometric/colorimetric detection system for an automated random-access instrument utilizing standard polystyrene test tubes as precision cuvettes.
To attain the optical precision necessary to precisely quantify fluorescent or colorimetric signals, analytical systems have typically included quality-controlled cuvettes, flow cells, or dual-beam reference systems. We describe a system where a fluorescence or transmittance signal is quantified in single, standard, 12-mm-diameter polystyrene test tubes. Tube-to-tube variation is minimized by r...
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ژورنال
عنوان ژورنال: Journal of Clinical Pathology
سال: 1978
ISSN: 0021-9746
DOI: 10.1136/jcp.31.3.295