Fish is considered a key nutrient for a balanced diet for the growing population  around the world..fish is also superior because it is the highest natural source of omega 3 fatty acids. These fishery products are susceptible to quality degradation, therefore many use formalin as a fish preservative. The purpose of this study was to determine the level of formalin in some fresh fish. The method used is a quantitative test of formalin levels with a formalin test kit and descriptively. The sample used 5 types of fresh fish from 10 respondents. And the results of this study were that the five fresh fish samples contained formalin because the five fish were “one the fishing†fish. The most formalin content found in snapper was 3.42 g/ml.
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