| Pyridaben 583 |
Page 95:
Under Internal standard solution, change "
laurophenone
(about 300 mg)." to: "
laurophenone (about 3000
mg)." |
MT 75.3
Determination
of pH Values |
Page 131:
(i): Line 7: Change the last two phrases as follow:
... Immerse the electrode into the liquid and immediately start
the stopwatch (Note 7). Record the pH values after 1 and 2 minutes,
without stirring during the measurement. If the two pH values
differ by more than 0.1 pH units, record and report the pH value
10 minutes after immersing the electrode.
Page 132:
Note 7: When using an automatic pH meter, where the measurement
stops automatically as soon as the pH changes are less than
a pre-set drift value of 0.1 pH units/min, a measurement period
of less than 10 min is acceptable and the resulting pH value
should be reported.
|