Introduction
SPECORD PLUS Edition 03/2013 5
1 Introduction
1.1 Use of the SPECORD PLUS
The spectrophotometers of the SPECORD PLUS family have been designed for measuring
the transmission, extinction, reflectance and energy of liquid and solid samples. They per-
form measurements in the spectral range of 190 to 1100 nm.
The individual devices have different optical properties/concepts and implement different
spectral resolutions:
1.4 nm, split beam with internal reference channel
1.4 nm, double-beam spectrophotometer
0.5; 1; 2 and 4 nm, double-beam spectrophotometer
SPECORD 250 PLUS 0.5; 1; 2 and 4 nm, double-beam spectrophotometer with up-
stream monochromator
The optical system of the SPECORD PLUS without electromechanical modulator guarantees
a true realtime operation allowing even for the compensation of changing absorptions of the
reference samples during the measurement.
An internal wavelength calibration with holmium oxide filter ensures a very good wavelength
accuracy and reproducibility.
The SPECORD PLUS meets the regulations of DAB (German pharmacopoeia) as well as
international regulations, such as PhEur., BP, USP or JPXIII.
Together with the powerful software WinASPECT PLUS the SPECORD PLUS ist especially
suited for use in routine labs with high sample throughput, but with its versatile accessories
also provides solutions for special applications.
1.2 Notes on the manual
This manual contains the description of the SPECORD PLUS product family
SPECORD 50 PLUS
SPECORD 200 PLUS
SPECORD 210 PLUS
SPECORD 250 PLUS
If the descriptions relate equally to all three device types, only the general term SPECORD
PLUS is used. If the properties of an individual device type are to be singled out, the full de-
vice names are mentioned.
Instructions for action which occur in chronological order are numbered and combined into
action units and furnished with the corresponding results.
Lists which are not in chronological order are shown as itemized lists, sub-listings as bullet
points.