Agilent Technologies 8453 Operator's Manual page 119

Table 2
Type
Photometric noise
Photometric stability
Baseline flatness
Typical scan time
Shortest scan time
Time until next scan
*
EP stands for European Pharmacopoeia
**
Apparent absorbance is strongly affected by dissolved oxygen. According to ASTM, bubble pure nitrogen through liquid for several minutes
immediately before use. Use only recently distilled water (not demineralized water).
Specifications
Performance Specifications
Performance Specifications, continued
Specification Comments
< 0.0002 AU rms Sixty consecutive scans on air with 0.5 s integration time at 0 AU, 500
nm; 11-point moving average: using equation:
Noise(rms)=SQRT((SUM(X-x)^2)/n) where x are measured values, X is
a 11-point moving average, n is the number of points
< 0.001 AU/h Scan on air at 0 AU, 340 nm, after 1-hour warm up, measured over 1
hour, every 60 s, integration time 5 s; difference between maximum
and minimum values are compared to specification; at constant
ambient temperature
< 0.001 AU rms Scan on air at 0 AU, 340 nm, 0.5 s integration time
1.5 s Full range
0.1 s Full range
0.1 s Full range, 0.1 s scan, at least 150 consecutive scans
13