title: Simple sample-cell positioner for reducing the imprecision due to placement of test-tube type sample cells.
abstract: The construction and evaluation of a sample-cell positioner for test-tube type cells in simple single-beam spectrophotometers are described. Use of the sample-cell positioner reduces the uncertainty due to cell-positioning, by about an order of magnitude.
authors.affiliation: Department of Chemistry, Oregon State University, Corvallis, Oregon 97331, U.S.A.
authors.forename: J D
authors.initials: JD
authors.lastname: Ingle