| Data and ordering information | |
| REF | 931 227 |
| Type | photometric test kit |
| Range | 0.1 – 2.0 mg/l F– |
| Sufficient for | 150 determinati*** |
| Shelf life | at least 1.5 years |
| Sea water suitability | yes, after distillation |
| Detectable with PF-12 | yes |
| 德国MN氟化物测***Fluoride/931227 | |
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The test is delivered without color scale and can be evaluated only with the photometers PF-12! Normally, the content of fluoride in surface and ground water is lower than 1 mg/l. Permanent c***umption of water containing more than 2 mg/l fluoride can cause a drinking water fluorese (a stained discolouration of the tooth enamel). On the other hand a content of fluoride lower than 0.5 mg/l could lead to an increasing risk of caries. The optimal content of fluoride in drinking water is about 1 mg/l. To ***oid problems with caries in some countries the content of fluoride in drinking water is artificially increased. However, WHO and EC drinking water regulati*** recommend a threshold value of 1.5 mg/l F–. In some European countries, the threshold value for mineral water is also 1.5 mg/l F–. For the suitability of water for the preparation of baby food a threshold value of 0.7 mg/l F– is recommended. Natural mineral waters with a fluoride content of more than 5 mg/l must be labelled with a warning. |