A control test in the presence of boric acid enables spurious fluorescence to be determined (by the formation of a boric acid/dehydroascorbic acid complex) and the fluorimetric determination to be deducedjw2019 jw2019
This requires reciprocal economic relations, i.e. secure investment conditions for foreign capital in the EU, and, conversely, secure conditions for EU investments in supplier countriesjw2019 jw2019