7.7
Section 7
TroubleshooTing
Pinnacle Operators Manual
Pickering Laboratories Inc.
APPLICATION SPECIFIC TROUBLESHOOTING
OBSERVED PROBLEM COMMON CAUSE ACTION TO TAKE NOTES
AMINO ACID
Peak areas diminish Old heated reactor Replace heated reactor Replace heated reactor every 2 years
Poor Aspartic Acid Shape Wrong pH or buffer for sample
Threonine/Serine Resolution decreases Dirty guard
Worn Column
Reverse guard column and flush with
100% regenerant
Repack or replace guard/analytical
column
Hydrindantin Deposits in Reactor Caused by out-of-date Trione Clean entire system with ethanaol.
Replace reagent filter.
CARBAMATES
Grease deposits in the heated reactor Fatty samples used in carbamate
analysis.
Follow the procedure on Page 7.11
GLYPHOSATE
Glyphosate peak is a doublet Improperly buffered samples Add 1-2 drops of Glyphosate RESTORE
to the sample
RESTORE Cat. No. 1700-0140
Glyphosate and AMPA peaks are late
and broad
Iron contamination of Column
Extremely large ID injection loop
Follow the procedure for pumping
RESTORE through the column
Replace the large ID loop with a
smaller ID.
Glyphosate peak too small or gone, but
AMPA present
Oxidizing reagent too weak, too old,
NaOCl stock solution too old
Reactor at wrong temperature
AMPA peak disappears, but
Glyphosate present
Oxidizing reagent too strong Make fresh Oxidizing reagent
To Next Page
Loading...