2 checking the distillate amount – BUCHI KjelSampler K-377 User Manual
Page 126
7 Maintenance
126
K-375/376/377 Operation Manual, Version B
The value shown for “Calibration volume” is updated.
NOTE
Repeat this procedure until the entered and the dosed volume correspond. An acceptable difference
at 50 mL is ±5 mL.
H
2
O and NaOH can be dosed into the sample tube and then poured into a graduated cylinder for
measurement.
The H
3
BO
3
can be dosed directly into the receiving vessel and then poured into a graduated cylinder.
7 .3 .2
Checking the distillate amount
• Carry out preheating (three times) so that the system is warm before performing this test.
• Create a new method using the following parameters:
H
2
O volume:
0 mL
NaOH volume:
0 mL
Reaction time:
0 s
Distillation mode:
Fixed time
Distillation time:
300 s
Stirrer speed distillation:
5
Steam output:
100 %
Titration type:
None
Aspiration sample tube:
Yes
Aspiration receiving vessel:
No
• Run the method with an empty sample tube and empty receiving vessel.
• Measure the distilled quantity in the receiving vessel using a graduated cylinder.
NOTE
The distillate amount with above parameters must be
≥ 130 mL.