Overview

OMNISEC REVEAL can be used to relate a polymer’s molecular properties to its bulk characteristics in a wide range of applications, from the packaging and paint industries to the manufacturing of food additives and pharmaceuticals. Its protein characterization capabilities can be used to study the effects of oligomerization, aggregation and conjugation on activity and efficacy in academic research and biopharmaceutical development.

The ultimate in advanced detection for GPC/SEC and UPLC/UHPLC

  • OMNISEC REVEAL is compatible with a wide range of different separation formats. Whether you want to perform HPLC-SEC, UPLC-SEC or both there is a REVEAL which can perform for you
  • Complete flexibility in detector configuration. Only purchase the detectors which add value to you now, with the security that any detector you require in the future can be installed onsite


Multi-detection SEC offers unparalleled information on the characterization of polymers, polysaccharides and proteins

  • Measuring absolute molecular weight, intrinsic viscosity, hydrodynamic radius, Mark-Houwink parameters, radius of gyration, composition, conformation and more
  • Rely on OMNISEC to help you understand, control and optimize your product performance
  • Detection and quantification of protein aggregation to drive faster sample characterization and development


Fully integrated temperature-controlled detector module for improved detector stability and sample characterization

  • Improve separations and result accuracy with the column oven and temperature-controlled integrated detector compartment – all installed as standard! 
  • Minimized inter-detector tubing, maintained at the same temperature as the detector, reduces band broadening effects to further increase signal quality


More reliable measurements with market leading light scattering sensitivity

Measure low concentration samples with a highly sensitive and stable refractive index detector

  • Measure molecular weight of polymers as low as 200 g/mol!
  • Injection masses as low as 100 ng for characterization of samples which were previously unmeasurable using advanced detection
  • Make sure you don’t miss low molecular weight and low concentration contaminants or protein fragments 


Improved structural comparisons enabled with the unique mechanical auto balance of the differential viscometer

  • Boost lab productivity and reduce service costs with a novel self-balancing viscometer design with user exchangeable capillaries


See the full range of your samples UV absorbance with the UV-PDA

  • Distinguish chemical changes by measuring absorbance across the full UV/Vis spectrum (190-900nm) using the photodiode array
  • All UV channels are recorded giving you the flexibility to choose what wavelength to use in post-processing


All systems can be fully serviced and supported onsite

  • No need to worry about shipping systems for service or support, all units can be fully serviced onsite to ensure minimum downtime

How it works

GPC/SEC is a two-step analytical process that involves separating a sample on the basis of its size and then analyzing the resulting fractions. The technique delivers molecular weight, molecular size and structural information, all of which define the performance of many industrially important materials.  Coupling the efficient sample separation of OMNISEC RESOLVE with the fully optimized, multi-detector, information-rich analysis delivered by OMNISEC REVEAL, Malvern has produced a market-leading solution for researchers and formulators developing novel natural and synthetic polymers, pharmaceutical and biopharmaceutical products and foods.

The RI and UV detectors give information about the concentration of the components in the sample. The light scattering detectors respond to the intensity of light scattered by the sample which is related to molecular weight and also allows Rg of large molecules to be calculated. The viscometer measures the changing solution viscosity to calculate the intrinsic viscosity of the sample which is a measure of structure. By combining the molecular weight and intrinsic viscosity data, the hydrodynamic diameter of the sample can also be calculated along with structural information via the Mark-Houwink plot.

Specification

System

Dimensions (W, D, H):
420, 640, 600 mm
Weight:
40 kg
Detector temperature range:
20 - 65 °C
Software:
OMNISEC software v10 (or later)
Data acquisition rate:
100 Hz
Patents:

US20140060162A1 & EP2619543B1 "Modular capillary bridge viscometer"

US20140144214A1 & EP2619544A1 "Automatically balanced capillary bridge viscometer"

Detector 1

Detector:
Light scattering
Measurement principle:
RALS 90° angle, LALS 7° angle
Light source:
50 mW, 640 nm laser
Cell volume:
18 µL
Dynamic range:
2500 mV
Baseline noise:
<0.1 mV
Baseline drift:
<0.2 mV/hr

Detector 2

Detector:
Differential refractive index
Measurement principle:
Deflection
Cell volume:
12 µL
Dynamic range:
±2.5 x 10-4 RIU
Baseline noise:
<10-7 RIU
Baseline drift:
<3 x 10-7 RIU/hr

Detector 3

Detector:
Viscometer
Measurement principle:
4-capillary Wheatstone bridge with self-balancing mechanism and user-exchangeable capillaries
Detector volume:
17 µL/capillary
Differential pressure dynamic range:
±2500 Pa
Differential pressure baseline noise:
0.3 Pa
Inlet pressure dynamic range:
100 kPa
Inlet pressure baseline noise:
0.01 kPa
Baseline drift:
<0.2 kPa/hr

Detector 4

Detector:
Diode-array-based UV/Vis spectrometer
Wavelength:
190 - 900 nm
Number of wavelengths:
1024
Wavelength accuracy:
<1 nm
Wavelength resolution:
0.6 nm
Cell volume:
7.5 µL
Path length:
10 mm
Baseline noise:
2 x 10-5 AU
Baseline drift:
5 x 10-4 AU/hr

Measurement type 1

Measurement type:
Absolute molecular weight
Measurement range:
200 - >107 g/mol
Minimum quantifiable mass:
Using HPLC-SEC:
100 ng of 100 kDa molecular weight polystyrene in THF
100 ng of BSA in PBS
Measurement principle:
Light scattering (LALS or RALS)

Measurement type 2

Measurement type:
Intrinsic viscosity
Minimum quantifiable mass:
1 µg of 100 kDa molecular weight polystyrene in THF
Measurement principle:
4-capillary Wheatstone bridge

Measurement type 3

Measurement type:
Concentration
Minimum quantifiable mass:
Using HPLC-SEC:
100 ng of 100 kDa molecular weight polystyrene in THF
100 ng of BSA in PBS
Measurement principle:
Differential refractive index detection

Operating environment

Temperature:
15 °C - 30 °C

Software

Minimum computer specification:
Windows 7 Professional 64 bit, 4th Gen Intel(R) Core I7 Processor (Quad Core HT, 3.4 GHz Turbo, w/ HD Graphics), 8 GB 1600 MHz DDR3 memory, 500 GB 3.5 inch SATA (7200 RPM) HDD, Full-HD monitor