Toothpaste and mouthwash contain many ingredients to enhance the quality and health benefits. Fluorine is added in typical amounts of 1000 to 1500 ppm to prevent cavities by strengthening tooth enamel. Active ingredients are often sodium fluoride (NaF), stannous fluoride (SnF2), or sodium monofluorophosphate (Na2PO3F). In addition to fluoride, other ingredients can be included to achieve whitening effects (peroxide) or abrasiveness (silica).

The fluorine amount has to be accurately controlled. A minimum level of 1000 ppm is needed to provide the desired benefit of strengthening tooth enamel, but exceedingly high fluorine amounts can possibly lead to health risks (dental fluorosis).

With Time Domain Nuclear Magnetic Resonance (TD-NMR), the fluorine content can be accurately measured irrespective of the fluorine compound and the toothpaste matrix.

The simplicity and the speed of the analysis make TD-NMR the method of choice for production, product development and quality control.

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Minispec Mq Series

The magnet NMR minispec mq series offers the most comprehensive range of measurement frequencies known today, ranging from 7.5 MHz for samples with large diameters, via 10 MHz, 20 MHz and 40 MHz, to the unparalleled mq60 with 60 MHz operating frequency.

While the minispec mq-one series features the best possible performance-to-footprint ratio for common QC applications, the minispec mq series offers multi-application support and a wide range of upgrade features, like tool-free exchangeable probes, variable temperature NMR probes and pulsed field gradient systems.

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