| 摘要 |
A sealed flexible plastic package contains ampuls of chemicals which are broken to release the contents and pass them through canals to a mixing pocket which contains a substance to be tested. The chemicals create a mixture having a certain characteristic color in the presence of an ingredient for which the test is conducted. For more accurate detection a small quantity of the mixture is passed into a smaller pocket preferably having a light colored bottom surface, and a color patch is placed near the smaller pocket for visual comparison with the color of the mixture.
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