SEC-MALS 20 or 9,specification,price,image-Bio-Equip in China

The Viscotek SEC-MALS 20 is a multi angle light scattering detector that can be used to measure the absolute molecular weight of proteins, synthetic and natural polymers, as well as molecular size expressed as the radius of gyration, Rg.

Multi angle light scattering detector to measure absolute molecular weight and molecular size.
Increased confidence of measured data due to the vertical flow cell with radial optics – reduces noise at low angles, increasing data quality!
Vertical flow cell eliminates the need to regularly clean the system.
Use as the sole light scattering source on OMNISEC, or add as a powerful additional detector that compliments the RALS/LALS.

Overview

The Viscotek SEC-MALS 20 is a modular multi angle light scattering detector that can easily be used with any existing SEC system, adding the power of light scattering detection for molecular weight and molecular size measurements. It can also be purchased as part of a complete system package. The signals from the SEC-MALS and other detectors connected to the system are analyzed by the most advanced GPC software available, OmniSEC.

The SEC-MALS 20 can be used to measure the absolute molecular weight and oligomeric state of proteins, independent of retention time. It can also be used to analyze natural and synthetic polymers, including the measurement of molecular size over the widest possible range.

Up to 20 angles for more accurate results
Measure absolute molecular weight and Rg
Can be combined with any existing SEC system
A single powerful software package to control the system and analyze data - OmniSEC
Vertical flow cell with advanced radial optics for improved performance
Stable and sensitive low angle detectors improve accuracy
Small footprint

How it works

The SEC-MALS 20 multi angle light scattering detector is connected to the output of any SEC or GPC system, such as the OMNISEC. Signals generated from the sample passing through all detectors are analyzed by OmniSEC software.

The SEC-MALS system consists of 20 detectors arranged around a vertical flow cell to detect scattered light at a wide range of angles.

The angular intensity and concentration information is combined to construct a plot, which is used in two ways. Firstly to extrapolate the data to determine the scattered light intensity at zero angle, from which the absolute molecular weight is calculated. Secondly to determine the initial slope of the plot which is related to the radius of gyration of the molecule (Rg).

If the system configuration includes a viscometer, the combination of molecular weight and intrinsic viscosity data can be used to calculate the hydrodynamic diameter of the sample along with information on branching.

Specification
Detectors 1

etector	SEC-MALS 20
Measurement principle	Multi-Angle Light Scattering
Light source	660nm, 120 mW laser
Number of angles	20
Cell volume	63 µL
Detector type	Custom photodiodes
Data acquisition rate	5 Hz

Measurement Type 1

Measurement type	Molecular Weight
Measurement range	<1000 – >10⁷ g/mol
Molecular weight accuracy	±2% for NIST standard SRM 1478
Measurement principle	Multi-Angle Light Scattering (MALS)
Data models	Zimm, Berry, Debye
Minimum sample required	1 µg 105 kDa Polystyrene, 2 µg BSA

Measurement Type 2

Measurement type	Radius of Gyration (Rg)
Measurement range	10 – 150 nm
Measurement principle	Multi-Angle Light Scattering (MALS)
Data models	Zimm, Berry, Debye

General

Temperature range	Ambient to 60°C
Analogue signals accepted	4 x ±10 V 24 bit
Laser safety	Class 1
Power	90-250V, 50/60 Hz
Power consumption	60W
Dimensions (W, D, H)	26cm, 46cm, 16cm
Weight	16.5kg
Temperature	15°C – 30°C
Humidity	35% - 80% non-condensing
Software	OmniSEC 5.0 or higher