Agilent Technologies 8453 Operator's Manual page 118

Table 2
Type
Wavelength range
Slit width
Resolution
Stray light
Wavelength accuracy
Wavelength reproducibility
Photometric accuracy
Photometric accuracy
Specifications
Performance Specifications
Performance Specifications
Performance specifications are measured after a minimum 1 hour from cold
start or from lamp turn-on, with no cell or filter unless specified, see Table 2.
Cold start in this context means that the spectrophotometer had been stored
for some hours at room temperature.
Performance Specifications
Specification Comments
190–1100 nm
1 nm
> 1.6 Toluene in hexane, ratio of absorbances at 269 and 266 nm
< 1.0 % At 200 nm, solution of 1.2% KCl, blank scan on air, 5 s integration
time; (EP
< 0.05 % At 220 nm, solution of 10 g/l NaI, blank scan on air, 5 s integration
time; (ASTM method)
< 0.03 % At 340 nm, solution of 50 g/l NaNO
time; (ASTM method)
< ± 0.5 nm NIST 2034 standard, using transmittance peak minima; wavelength in
NIST certificate are interpolated for 1.5 nm bandwidth from the
values given for 2 nm and 1 nm bandwidth; uncertainty of standard
from NIST certificate (typically ±0.1 nm) is added to the specification;
99-point spline function is used; 0.5 s integration time
< ± 0.02 nm Ten consecutive scans with NIST 2034 standard; 0.5 s integration
time
< ± 0.005 AU NIST 930e standard at 1 AU, at 440.0, 465.0, 546.1, 590.0, and 635.0
nm, the expanded uncertainty from NIST certificate is added to the
specification; 0.5 s integration time
< ± 0.01 AU Potassium dichromate in 0.01 N H
blank scan on 0.01 N H
12
* **
method)
SO ; 0.5 s integration time (EP method)
4
2
, blank scan on air, 5 s integration
2
SO at 235, 257, 313, 350 nm;
4
2