Sample (Toothpaste)

Concentration of Fluoride (mg/L) by direct Measurement

Concentration of Fluoride (mg/L) by standard addition method

T1

0.75

0.73

T2

0.65

0.64

T3

0.35

0.32

T4

0.16

0.15

T5

0.14

0.13

T6

0.05

0.05

T7

0.02

0.03