3
Measurement
Sodium (Na
+
) sensor Ion-selective, flow-through, glass capillary
electrode
Potassium (K
+
) sensor Ion-selective, flow-through, liquid membrane
electrode
Chloride (Cl
-
) sensor Ion-selective, flow-through, liquid membrane
electrode
Calcium (Ca
++
) sensor Ion-selective, flow-through, liquid membrane
electrode
Lithium (Li
+
) sensor Ion-selective, flow-through, liquid membrane
electrode
Reference System Open liquid junction, flow-through electrode
Calibration Fully automatic
1 point with each sample
2 point every 3 hours (9180/9181 every 4 hrs.)
Standby Mode suspends calibrations
Warm-up time 1 minute
Temperature Room temperature, 15 - 32° C, 60 - 90° F
Humidity maximum 85% relative humidity,
non-condensing
Data management Quality Control memory storage, 3 levels,
35 values; calculation of mean, standard
deviation, and coefficient of variation (CV)
Diagnostic Programs user-controlled diagnostics,
YES/NO operation via the display
Electronics Microprocessor-controlled
Display LCD dot-matrix, 2 line, 16 characters per line
Printer Integral thermal printer, 16 character width
Autosampler (9181 only) Integral turntable - 18 positions,
2 mL or 0.25 mL sample cups
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