Molecular Weight Sensitive Detectors: Light scattering detector Capillary viscometer

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SECcurity on-line multi angle light scattering detector Part number: 403-0001 Software for batch MALLS: Part number: 403-0004 The SECcurity MwA- MALLS is a 7-angle static light scattering detector for the measurement of absolute molecular weight, size, and conformation of macromolecules in solution. It is manufactured by Brookhaven Instruments The revolutionary design with a cylindrical, self-cleaning, and index-matching cell avoids common pitfalls in GPC/SEC-light scattering detection. Modern ultra-sensitive CCD detection results in high sensitivity, even at low concentration and molar masses. A small footprint allows integration into any GPC/SEC or FFF system. The Molecular Weight Analyzer can be used in batch mode (off-line) without modifications. Specifications    Number of angles:  7 plus additional reference, simultaneous detection Detection angles/scattering angles:  35, 50, 75, 90 105, 130, 145; no difference detection angle/scattering angle due to index-matching cell Cell:  PEEK Cell volume:  100 µL nominal Scattering volume:  20 nL nominal Cell cleaning option:  self cleaning cell with vertical flow path Light source:    35 mW, 635 nm, vertically polarized, temperature stabilized with precision power control Detector   fibre optics with low numerical aperture, integral to cell; CCD with ultra-high sensitivity and spatial uniformity Control    Integrated, dedicated, powerful microcontroller Input:  4 analog ins with 16 and 24 bit resolution for any concentration detector or viscometer; autosampler/manual injector digital inject in Options:  temperature control P/N 403-0005 other cell material on request IR laser or different laser wavelength on request 15 additional analog channels on request Software for static light scattering measurements in batch mode P/N 403-0004 GLP/Compliance:  fan on/off with built-in temperature control

SECcurity on-line viscometer ETA2010 Part number: 402-0001 The SECcurity eta2010 viscometer four capillary viscometer lowers the detection limit with an asymmetric bridge design. While other viscometers dilute 50% of the sample in the solvent path, the eta2010 dilutes only 20% of the sample in the solvent path.  80% of the sample run through the sample path leading to an unparalleled signal/noise ratio without any digital signal processing. Low-noise electronics combined with high-sensitivity pressure transducers results in excellent peak shapes and high signal linearity. The eta2010 can be used with any GPC/SEC system. The use of reservoirs in the bridge eliminate viscometer modifations when the column setup changes and reduces the analysis time to 50% compared with other viscometers. The SECcurity eta2010 can be integrated into any GPC/SEC or FFF system. Specifications Detection type:  4 capillary on-line viscometer Signals: simultaneous measurement delta pressure and inlet pressure ll Noise level:   0,2 Pa, diff. pressure channel, 25° CK Cell:  asysmmetric bridge with 80/20 split Pressure transducers:  fast-responding Hastelloy pressure transducers without hysteresis Temperature range:  ambient to 80° C, high temperature model to 150° C Temperature stability:   > 0.01° C Temperature accuracy:  ± 0.5° C Maximum flow ratel    1.2 mL Analog in:  2 analog ins for any concentration detector; Start, Error, Flush, Zero Analog output:  10.0 Volt/10 kPa FSD Differential Pressure 10.0 Volt/100 kPa FSD Inlet Pressure GLP/Compliance:    Internal error logbook, electronic pressure transducer protection with error code