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ชุดทดสอบฟลูออไรด์ในน้ำ (0.1 – 2.0 ppm.)


Photometric determination of fluoride

Photometric determination of fluoride with 1,8-dihydroxy-2-(4-sulfophenylazo)naphthalene-3,6-disulfonic acid (SPADNS) with the photometer PF-11. (Reaction principle is analogous to APHA 4500-F D 

Data and ordering information
Cat. No. 931 227
Type photometric test kit

0.1 – 2.0 mg/l F

Sufficient for 150 determinations
Shelf life at least 18 months
Sea water suitability

yes, after distillation

Detectable with PF-11 yes

The test is delivered without color scale and can be evaluated only with the photometers PF-11!

Normally, the content of fluoride in surface and ground water is lower than 1 mg/l. Permanent consumption 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 avoid problems with caries in some countries the content of fluoride in drinking water is artificially increased. However, WHO and EC drinking water regulations 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.


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    โทร. 081-847-6768, 02-191-3928 แฟ็กซ์. 02-191-3929 

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    E-mail : , IDline: @alltestkit


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