| Initial concentration (I.C.) of sample to be adjusted | Adjusted concentration |
| Less than or equal to concentration a of the low level | Multiplication of the I.C. and the low level adjustment factor |
| Between concentrationsa of the low and high levels | Multiplication of the I.C. and a factor proportionally calculated |
| Greater than or equal to concentrationa of the high level | Multiplication of the I.C. and the high level adjustment factor |