In order to ensure the quality of the first batch of samples, the official laboratory conduct test to examine the samples.
First, the sample size and the number of batches should be determined. For this purpose, an appropriate sample size gauge can be set up for each batch sample. Then, the Analytical Plan should be formulated, with the type of test, e.g. atomic absorption, Fourier transform infrared (FTIR) spectrophotometer, UV-Vis spectrophotometer, FT-IR, X-ray fluorescence (XRF) and gas chromatography (GC).
For a batch sample, the expected analytical results should be established first. The key points are color, texture, odor, size, shape, efficacy and other physical properties. The prediction regarding these properties should be as accurate as possible and typically based on the properties of similar batches.
Second, the test unit should be considered to determine what wavelength, sensitivity and acceptable range of results are appropriate. The laboratory should be aware of any health and safety requirements in advance, such as handling of toxic materials.
Third, the samples should be prepared according to the laboratory requirements. All the ‘guidelines’ need to be followed to arrange the preparation, such as weight, dilution and other standard techniques.
Fourth, the actual testing should be conducted in compliance with the established ‘guidelines’. The batches should be inspected for any type of contamination and special precautions should be taken if deemed necessary.
Fifth, the results from the tests should be recorded and stored securely. The report should include all the information related to the tests and the results. The results should also be checked to make sure that it is within the expected range.
Finally, the quality assessment should be carried out to evaluate the results. To find out whether the test results comply with the pre-determined standards, a plan should be in place with predetermined criteria. After evaluating the test results, the first batch of samples should be considered as approved if the results are within the acceptable range.
In conclusion, the quality inspection of the first batch of samples requires precise preparation and analysis in order to measure the quality of the samples. The preparation of the samples, execution of the tests, recording and evaluation of the results should all be carried out as per the established ‘guidelines’. It is also important to take into account any health and safety requirements.
