We have recently constructed a 10‐mm, light path quartz cuvet which will accept a Clark oxygen electrode; it is temperature controlled and is suitable for use in a Unicam (Cambridge, England) SP 800 recording spectrophotometer. Several enquiries have prompted this publication, although such an apparatus was mentioned much earlier by Chance and Williams, 1 and has been used extensively. Figure 1 a , b , c , and d and their legends provide sufficient detail for the construction of the cuvet and provision of the commercially available electrode, quartz faces, stirring motor and disk magnet. Circuit diagrams for temperature control (range 22–38°C., ± 0.2°C.) and stirrer speed control are shown in Figure 2 a and b . The cuvet is shown situated in the spectrophotometer cell housing in Figure 3, and the cuvet with its associated equipment is shown in Figure 4.
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Ribbons et al. (1968) studied this question.