HyperQuan, Inc. has introduced a true double-beam variable
wavelength HPLC/CE detector using a prism-based monochromator.
This was done to eliminate second-order effects and to provide
greater photon throughput. The monochromator itself is a
fairly massive device designed to exhibit the absolute minimum
in drift characteristics. The usable range is 200 to 830 nm
with a + 3nm bandpass at 250 nm. Control can be either through
the front panel or through a bi-directional RS232 port.