
IV-5
Calibration
Thermo Scientific Orion 2111LL Sodium Monitor User Guide
ROSS and the COIL tradedress are trademarks of Thermo Fisher Scientific Inc. US Patent 6,793,787
Maximum .system .accuracy .is .ensured .through .a .fast, .easy, .and .accurate .
calibration .performed .in .the .expected .sample .range . . .This .calibration .
procedure .uses .equipment .supplied .in .calibration .kit .(Cat . .No . .181148) . .
• . Perform .monthly .maintenance .procedure .including .conditioning .of .
electrode . .
• . Wait .at .least .one .hour .after .changing .reagent .or .etching .electrode . .
Calibration .must .be .initiated .within .2-3 .hours .of .electrode .etching .to .
ensure .faster .response . .
• . Check .that .present .sample .concentration .is .equal .or .less .than .standard .
1 .(10 .ppb); .if .not, .calibration .can .still .be .performed .with .a .loss .in .
accuracy .as .long .as .background .concentration .is .not .significantly .
larger . . .Accuracy .can .be .attained .if .alternate .standards .are .employed .but .
standard .1 .should .not .be .less .than .10 .ppb .
• . Proper .pipette .technique .is .crucial .to .calibration . . .If .operator .is .not .
familiar .with .pipette .equipment .or .technique, .refer .to .
Appendix A-11,
Pipette Operation
.
• . Do .not .touch .pipette .tip .with .bare .fingers . . .Risk .of .sodium .
contamination .is .possible . . .Use .powder .free .gloves .to .prevent .
contamination . .
• . When .using .pipette .to .inject .standards .during .calibration, .use .fresh .
pipette .tip .for .each .standard .concentration .and .each .injection .
• . With .a .fresh .tip .installed, .rinse .the .tip .with .the .same .concentration .as .
the .intended .injection . .
• . Fill .the .tip .and .dispense .the .tip .with .the .standard .1-3 .times . . .
Be sure to
discard the standard in the drain, between the rinses.
• . Wipe .any .excess .liquid .from .the .outside .of .the .tip .with .out .touching .
the .opening .
• . Insert .pipette .tip .into .calibration .port .on .flow .cell .cap . . .
• . Be .sure .to .hold .pipette .completely .vertical .while .dispensing . . .Do .not .
inject .standard .on .side .of .flow .cell, .as .a .film .may .be .retained .on .the .
inside .of .the .wall .resulting .in .errors .in .precision .of .calibration . . .Refer .to .
Figure IV-5
.
Before Performing
DKA Calibration
Figure IV-5
Pipette Dispensing
Recommendations
上海肯强贸易有限公司
http://www.kq17.com.cn