Question

In the sampling unit, when it is in its earlier form consisted of a circular turntable carrying around its rim 40 disposable __________ of 2 ml capacity.

(a) Polyvinyl cups

(b) Polythene cups

(c) Polyester cups

(d) Polystyrene cups

The question was posed to me in a national level competition.

The above asked question is from Skin Reflectance Oximeters topic in division Oximeters of Biomedical Instrumentation

Answer 1

The correct choice is (d) Polystyrene cups

For explanation: The unit in its earlier form consisted of a circular turntable carrying around its rim 40 disposable polystyrene cups of 2 ml capacity. The sample plate carrying these cups rotates at a predetermined speed. The movement of the turntable is synchronized with the movements of a sampling crook.