For this study 20 different packs of balloons have been purchased at different retailers. The result was that there was no measurable release of heavy metal, but all the balloons gave off nitrosamines in concentrations higher than allowed for soothers and bottle teats. Holland has limits for the content of nitrosamines and nitrosatables and Germany has migration limits for nitrosamines and nitrosatable substances from balloons. The four tested balloons migrated nitrosamines in concentrations below the German limit, but the release of nitrosatable substances was generally in very high concentrations and in three of the four balloons, the migration was higher than the German limit.
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