Operation TD-550/560 Oil in Water Analyzer
12 TD-550/560 Oil in Water Analyzer
Operation Manual
PN 106737
REV H
2.4 CALIBRATION OVERVIEW
Before the TD-550/560 can be used to analyze a sample, you must calibrate it with a blank and a
calibration standard containing your target hydrocarbon. If you are following a solvent-extraction
method, use the pure extraction solvent for the blank. Prepare the calibration standard by dissolving a
known amount of hydrocarbon in a known volume of extraction solvent. The standard solution will then
have a known concentration. You should also check the linearity and sensitivity as discussed in Section
6.1 Low Fluorescence During Calibration and Section 6.2 Linearity and Linearity Checking. Calibrations
are saved to a list on the Calibration screen. Each calibration includes a name, date, cuvette type, and
extraction ratio. On the Calibration screen, you can also associate a saved calibration with a location.
For fastHEX
TM
method calibration details, see Section 5 No-Solvent Analysis Method.
For No-Solvent method calibration details, see Section 5.2 Calibrating the Analyzer for 0-100 ppm
Range.
NOTE: Make sure that you use the same size cuvette for blank, calibration solution, and sample
analysis. For example, if you use the 8 mm cuvettes for blank and calibration solution, then you must
use 8 mm cuvettes for sample analysis also. Using different size cuvettes for calibration and sample
analysis will result in incorrect readings.
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