Chemistry: physical processes – Physical processes – Crystallization
Patent
1979-01-30
1981-03-03
Serwin, R. E.
Chemistry: physical processes
Physical processes
Crystallization
23928, 261 82, 261122, 422 50, 422 99, G01N 3396, G01N 3350
Patent
active
042538459
ABSTRACT:
Standards solutions and test samples are necessary for blood gas analyzers. Production of such standards and test samples has only been possible with relatively expensive apparatus. Such standards and test samples are provided herein by apparatus 10 which equilibrates a liquid 12 with a gas 14. The apparatus 10 includes a barrel 16 open at a first end 18 and at a second end 20. A piston 22 fits matingly reciprocally within the barrel 16. A flow control 26 allows the gas 14 to flow into the second end 20 of the barrel 16 and prevents the liquid 12 from flowing out of the second end 20 of the barrel 16. The gas 14 is allowed to flow out of the barrel 16 above a liquid level 44 therein. A method utilizing the apparatus 10 to prepare standard and test sample solutions is also set out.
REFERENCES:
patent: 3973915 (1976-08-01), Raffaele et al.
patent: 4057499 (1977-11-01), Buono
Noonan et al, Clinical Chemistry, vol. 20, No. 6, 1974 pp. 660-665.
Analytical Products, Inc.
Serwin R. E.
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