Requirements for the evaluation process, Chemistry

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Q. Requirements for the evaluation process?

Some of the requirements to be kept in mind for the evaluation of the products are listed herewith:

• People in a sensory test are often placed in individual test booths so that the judgments they give are their own and do not reflect the opinions of those around them.

• Samples are labeled with random numbers so that the people they do not form judgments based on the labels but rather on their sensory experiences.

• Products may be given in different orders to each participant to help measure and counterbalance for the sequential effects of seeing one product after another.

• Standard procedures may be established for sample temperature, volume and spacing in time, as needed to control unwanted variation and improve test precision.

• Clear instructions should be provided to the panelists before the evaluation process as enumerated in Table 6.2. These instructions should be pretested by having someone unfamiliar with sensory testing. Instructions regarding the filling of the evaluation sheet should also be provided to the panelists.


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