Title: Spectrophotometric measurement in a chemical testing apparatus

Abstract: In a spectrophotometric measuring apparatus sample liquid is pumped into a substantially cylindrical cuvette having an internal dimension such that a meniscus of a leading edge of a liquid sample pumped therethrough is maintained. Radiant energy directed through the sample liquid is directed across the path of fluid flow rather than along the length thereof. Consequently, spectrophotometric measurement is performed using a significantly reduced optical pathlength.

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Inventors: Lee, Lap Y. (Houston, TX, US)

Application Number: 920863
Filing Date: 1978-06-30
Publication_date: 1980-10-21
Assignee: Hycel, Inc. (Houston, TX)
Primary Class(es): 436/43 356/246, 422/81, 422/82, 436/164
Other Classes:
US Patent Ref:

3286583	Nov, 1966	Ferrari	422/104.
3342019	Sep, 1967	Smythe	422/82.
3418053	Dec, 1968	Pelavin	422/82.
3422667	Jan, 1969	Hrdina	422/82.
3480369	Nov, 1969	Smythe et al.	422/82.
3529896	Sep, 1970	Padawer	422/82.
3584964	Jun, 1971	Najam, Jr.	422/104.

Other Refs:
Primary Examiner: Serwin, R. E.
Assistant Examiner:
Attorney: