Chemistry: analytical and immunological testing – Composition for standardization – calibration – simulation,... – Preservative – buffer – anticoagulant or diluent
Patent
1989-01-06
1990-06-19
Lee, Mary C.
Chemistry: analytical and immunological testing
Composition for standardization, calibration, simulation,...
Preservative, buffer, anticoagulant or diluent
2524081, 436 19, G01N 2756, C09K 300
Patent
active
049353730
ABSTRACT:
A reference liquid for calibration or quality control of instruments which determine ionized calcium and pH. The reference liquid contains both a particular calcium ion activity and a pH-buffer and can therefore be used for calibration of both the calcium-sensitive electrode and the pH-electrode in the instruments. The pH-buffer is a nitrogen-containing organic sulphonic acid and the salt of this acid, the acid having a pK in the range of 6.6-7.6. The reference liquid has an ionic strength of 0.15-0.17, a buffer capacity .beta. in the range of 0.04-0.10 and is packed in glass ampoules.
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Lee Mary C.
Radiometer A/S
Scalzo Catherine S. K.
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