1 daily maintenance, 1 before sample determination, Daily maintenance – BUCHI KjelSampler K-377 User Manual
Page 120: 7 .1 daily maintenance
7 Maintenance
120
K-375/376/377 Operation Manual, Version B
7 .1
Daily maintenance
7 .1 .1
Before sample determination
• Remove the electrode from the storage cap (the cap can fixed to the electrode holder on the front
side of the housing) and place it into the receiving vessel.
• Rinse the titration hoses (Path: System Preparation Buret functions Buret function “Dose”).
• Calibrate the pH electrode with fresh buffer solution, see also chapter “6.6.1 System Preparation”.
• Prime the system (Path: System Preparation Priming), see also chapter “6.6.1 System Prepara-
tion”.
• Submerge the pH electrode into the measuring medium at least up to the diaphragm.
NOTE
All glass parts must be warm before the analysis begins. Therefore a preheating of the system is
necessary if more than 15 minutes pass between two determinations (Path: Operator, System prepa-
ration, Preheating).
Cleaning between samples is not necessary, unless sample deposits are found in the splash
protector. (Path: System Preparation Cleaning).