Chapter 6: Maintenance and Adjustments
SPD-M20A Service Manual
66
・ If the error (E) is -4% or less, widen the light measurement wavelength bandwidth
setting to 16 to 20 nm, and repeat the linearity correction procedure.
6.8 Refractive Index Effect Measurement >
Measure the size of the baseline shift using the system shown in the following figure and
the accompanying measurement conditions. Confirm that the criteria are met.
Flow Line Diagram
Measurement Conditions
STR-ODS Ⅱ 4.6 mm ID 15 cm
As shown in the figure, about 2 minutes after the injection, solvent shock occurs.
Judgment
Confirm that the size of the solvent shock is less than 2 mAU.
6.9 Sample Injection, Variance Test >
Using the system shown in the following figure, inject 1 mg/ mL of benzene/ isopropanol
into a 20 L loop (about 50 L minimum to fill the loop), and measure the peak widening
on a recorder.
Perform the measurement twice, and confirm there is no difference in results.
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