Encara no tenim significats per a "chemical impurity".
1In June, Roche said it had identified a chemical impurity in the product, leading to the recall in Europe and some other regions.
2Roche said it had identified a chemical impurity in the product, leading to the recall in Europe and "some other world regions".
3A delicious substitute for meat, guaranteed to be free from all chemical impurities.
4They proved to be free of dangerous chemical impurities.
5Al2O3 changes from transparent to a range of intense colours depending on the chemical impurities present.
6PMID: 23632734 Al2O3 changes from transparent to a range of intense colours depending on the chemical impurities present.
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