Viscotek 270max - specifications

The Viscotek 270max is a complete, advanced, multidetector GPC/SEC system suitable for all macromolecular applications.

OmniSEC

Acquisition

6 channels, 5Hz, unlimited acquisition time

Calculation modules

Conventional, Universal, Light Scattering, Triple, Copolymer, Protein specific, FIPA

Results output

M_n, M_w, M_z, M_p, M_w/M_n, IV [η], R_h, R_g, Branching Number, Branching Frequency, Number of Arms, Weight Fraction, Concentration, MH-a, MH-k, dn/dc, dA/dc. A₂

Minimum PC specification

Windows XP or higher, 100 GB HD, 2GB RAM, 1.8 GHz processor,
Graphics 1024x768, 16-bit colour depth

270 Dual detector

Detector configuration

Light scattering and viscometer detectors in series

Interface

6 channel digital interface to OmniSEC software, 2 analog inputs, RI and UV/LS

Dimensions

20cm x 25cm x 47cm (W x H x D); 9.8Kg

Light scattering detector

Measuring principle

RALS, 90º angle; LALS, 7º angle, with high efficiency optics

Light Source

Temperature controlled laser diode, 3mW, 670nm

Cell

Ultra low volume 18μL

Data rate

5Hz directly to OmniSEC

Refractive index detector

Measuring principle

Deflection

Light Source

Tungsten lamp

Cell

45° quartz glass, 9μL volume

Purging

3 modes, Manual, Automatic and Programmable

Data rate

5Hz to OmniSEC via 270 (2Hz direct to OmniSEC in stand-alone mode)

Temperature control

Normal environment, 35 to 55ºC in 1ºC steps.
Cold environment, 10 to 30ºC in 1ºC steps.

Dimensions

22cm x 16cm x 35cm (W x H xD); 12kg

Column Oven

Temperature control

10ºC above ambient to 100ºC

Capacity

Up to five 8mm x 30cm GPC columns

Internal dimensions

41cm x 7cm x 4cm (W x H xD)

Viscometer detector

Measuring principle

Inert, 4 capillary differential Wheatstone bridge configuration

Transducers

Analog, magnetic reluctance

Measuring volume

18μL

Purging

Manual via front ports

Data rate

5Hz directly to OmniSEC

UV detector

Wavelength

190 to 740nm

Light Source

Deuterium; Tungsten halogen is optional

Cell volume

10μL

Data rate

Analog collection of single wavelength (programmable), A-to-D with 5Hz to OmniSEC

Dimensions

23cm x 14cm x 39cm (W x H xD); 6.0kg

UV-PDA detector

Wavelength/resolution

190 to 500nm or 430 to 710nm on 256 diode array

Light Source

Deuterium (190-500nm) or Tungsten (430-710nm)

Cell volume

10μL

Data rate

256 channels at 1Hz direct to OmniSEC

Dimensions

23cm x 14cm x 39cm (W x H xD); 6.0kg

GPCmax

Operation and Control

By OmniSEC software or from front panel

Dimensions

55cm x 38cm x 53cm (W x H x D); 37kg

Degasser

Channels/volume

Two channels, 8ml per channel

PerformanceM

<0.5 ppm oxygen at 0.5 mL/min

Eluent Sensor

User selectable, stops GPC pump when eluent runs out

Pump

Flow rate range

0.01 to 9.99 mL/min

Pulsation

Less than 1% (measured with viscometer)

Pressure Reading

MPa or PSI

Soft start/stop

User programmable in mL/min/min

Autosampler

Capacity (Standard)

120 vials, freely programmable position sequence

Range

Variable injection volume, between 20 and 150μL

Reproducibility

Better than 0.5 %

Carryover

Less than 0.1%, depending on wash program

Cooling option

4°C to 40°C

Capacity (with cooling option)

60 vials cooled, freely programmable position sequence

Heated tray option

65°C fixed in one tray

Capacity (with heating option)

60 vials heated, 60 unheated, freely programmable position sequence