Viscotek RImax

Overview

The RImax is a modular system consisting of the GPCmax integrated solvent and sample delivery module, refractive index detector, column oven, plus the same powerful OmniSEC software used in the TDAmax research system.

• Relative molecular weight measurement and molecular weight distribution of polymers and proteins
• Autosampler incorporated to increase throughput and improve repeatability
• In line degasser and automatic eluent sensor for out of solvent warning
• Column oven to give repeatable elution profiles
• Comprehensive functionality software featuring ‘two clicks from data to results’
• Upgradable to add light scattering (RALS and LALS) intrinsic viscosity and UV detectors, to provide absolute molecular weight, molecular size, structure and composition of proteins and polymers
• 21 CFR part 11 compliant

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How it works

Gel Permeation Chromatography (GPC), also known as Size Exclusion Chromatography (SEC)

This is a chromatographic technique that employs specialized columns to separate natural and synthetic polymers, biopolymers, proteins on the basis of size.

As the sample is separated and elutes from the column, it can be characterized by a single concentration detector, using ‘Conventional calibration’, to give a relative molecular weight.

The RImax includes an integrated autosampler and pump, a Refractive Index detector and column oven.

A Viscometer, Light scattering and single or multiple wavelength UV detector can be added to provide absolute molecular weight, compositional analysis for copolymer analysis and peak identification.

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Specification

A complete GPC/SEC system to provide a conventional, calibration system for relative molecular weight measurement.

Output of Mn, Mw, Mz, Mp, Mw/Mn, dn/dc, Weight Fraction (IV [η], Rh, Rg, Branching Number, Branching Frequency, Concentration, MH-a, MH-k, A2, dA/dc all optional)

System

GPCmax:

Pump flow rate:

0.01 to 9.99 mL/min, programmable soft start

Pulsation:

Less than 1%, measured with viscometer

Degasser:

Two channels, < 0.5ppm oxygen at 0.5mL/min, eluent
sensor to stop pump when eluent runs out

Dimensions:

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

Weight:

37kg

Autosampler

Capacity:

120 vials, programmable sequence

Injection volume:

Variable 20 to 150µL

Reproducibility:

Better than 0.5%

Carryover:

Less than 0.1%, depending on wash program

Cooling option:

4°C to 40°C, limited to 60 vials

Heated tray option

Up to 65°C limited to 60 vials heated, 60 vials unheated

Refractive index Detector

Measurement principle:

Deflection

Light source:

Tungsten lamp

Cell volume:

9µL

Purging:

Manual, Automatic and programmable

Data rate:

2Hz to OmniSEC

Temperature control:

35º - 55ºC in 1ºC steps – normal environment
10º - 30ºC in 1ºC steps – cold room environment

Dimensions

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

Column Oven

Temperature control:

10°C above ambient to 100°C

Capacity:

Up to five 8mm x 30cm GPC columns

Internal dimensions:

7cm x 4cm x 41cm, (W x H x D)

Detector 2 (option)

UV, Single wavelength programmable

Wavelength:

190 to 740nm

Light source:

Deuterium, Tungsten halogen optional

Cell volume:

10µL

Data rate:

Analog, A-to-D with 5Hz to OmniSEC

Dimensions:

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

Detector 3 (option)

UV-PDA

Wavelength:

190 to 500nm or 710nm on 256 diode array

Light source:

Deuterium (190 – 500nm), Tungsten halogen (430 – 710nm)

Cell volume:

10µL

Data rate:

256channels with 1Hz to OmniSEC

Software:

OmniSEC, 6 channels at 5Hz, unlimited acquisition time

Laser safety:

Class 1

Operating environment:

Temperature:

15°C – 40°C

Humidity:

35% - 80% non-condensing

Software:

OmniSEC, 6 channels at 5Hz, unlimited acquisition time

Minimum computer specification:

100 GB HD, 2GB RAM, 1.8 GHz processor,
Graphics 1024x768, 16-bit color depth

Operating platforms:

Windows XP or higher

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Accessories

Malvern - Viscotek accessories include all the components to meet the requirements of your application

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Support

When you purchase a Malvern product we understand that this is just the first stage of a working relationship that will last for the lifetime of the instrument. Some customers just need to ask an occasional question or to download a software upgrade, whilst others require a comprehensive support contract with priority call out and fixed cost of ownership. Whatever your situation Malvern will provide the right support for you.

Help Desk

• Telephone and email support.
• Operators who take responsibility for your call and ensure your query is answered.

Training

• On Site training courses

• Classroom training
• e-formation

Resource Centre

• Application notes
• Technical notes
• On demand presentations
• Live webinars

Téléchargement de logiciel

• A simple mechanism for receiving updates and new features

Platinum and Gold Service Contracts:

• Protection from the cost of downtime
• No time lost in obtaining help when you need it
• Fixed cost of ownership

Bronze Service Agreements:

• Protect the value of your investment
• Reduce the risk of downtime
• Protect the validity of your data

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