What is the concentration in ppm of Gel or Foam 1.23% Acidulated Phosphate Fluoride?

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Multiple Choice

What is the concentration in ppm of Gel or Foam 1.23% Acidulated Phosphate Fluoride?

Explanation:
The key idea is converting percent fluoride to parts per million. In dilute solutions, 1% equals 10,000 mg/L, which is 10,000 ppm. So 1.23% fluoride translates to 1.23 × 10,000 mg/L = 12,300 mg/L, i.e., 12,300 ppm. Since APF gel is described as 1.23% fluoride ion, its concentration is about 12,300 ppm. That’s why 12,300 ppm is the correct choice.

The key idea is converting percent fluoride to parts per million. In dilute solutions, 1% equals 10,000 mg/L, which is 10,000 ppm. So 1.23% fluoride translates to 1.23 × 10,000 mg/L = 12,300 mg/L, i.e., 12,300 ppm. Since APF gel is described as 1.23% fluoride ion, its concentration is about 12,300 ppm. That’s why 12,300 ppm is the correct choice.

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