a. Sample bottles. glass-stoppered or with teflon-lined closures, to hold the original samples.
b. Constant temperature bathะ A water bath or electric hot place capable of temperature control of ± 1 C for odor tests at elevated temperatures. The temperature bath must not contribute any odor to the odor flasks.
c. Odor flasks; Glass-stoppered, 500 ml (T 32) erlenmeyer flasks, to hold sample dilutions during testing.
d. Pipets