Manufacturer:             Dionex

Model:                         DX 500

The following illustrations and descriptions refer to the instrument model and are drawn from brochures. They do not represent the scope of delivery. Please refer to the text of the offer for the exact scope of delivery.

Specifications

Signals

Up to nine, each defined by a sample wavelength and bandwidth.

Noise

< ±25 }SAU, 250 nm 4-nm bandwidth

Drift

< 1 mAU/hr, 250 nm, empty cell

Wavelength Range 195 – 600 nm

Wavelength Accuracy ± 1 nm

Resolution

1 nm Digital

Spectral Acquisition

Selectable, 240, 320, 640, 1280, 2000 ms

Light Source

Deuterium; 1000 hrs

Flow Cells

Stainless Steel: 8-µL volume, 10-mm path, 5 MPa (750 psi) max

Titanium (optional): 8-µL volume, 10-mm path, 5 MPa (750 psi) max

Prep (optional): variable volume and path, 2 MPa (300 psi) max: 0.8-µL volume, 0.1-mm path 1.6-µL volume, 0.2-mm path 4.0-µL volume, 0.5-mm path

High pressure (optional): 3-µL volume, 6-mm path, 40 MPa (6000 psi)

Diode Array Thermostat

3-stage temperature control:

Off, Low (37 °C), High (47 °C) Important for dark-current control

Operating Temperature Range

10–35°C

Dimensions (h x w x d)

20 cm (7.9 in.) x 26 cm (10.2 in.) x 52 cm (20.5 in.)

Weight

18 kg (401b)

Power Requirements

120 V ac, 2 A, 60 Hz;

or 220 V ac, 1 A, 50 Hz;

or 240 V ac, 1A, 50 Hz

Autosampler AS 40

Specifications

Sample Delivery Method:

Displacement

Capacity:

11 cassettes of either six 5-mL or eight 0.5-mL PolyVials

Vial Size:

Nominal volume of 0.5 or 5 mL

Filter Pore Size:

20 µm

Minimum Volume Delivered:

0.17 mL from 0.5-mL vials; 1.7 mL from 5-mL vials

External Control:

Relay closure

Injections Per Vial:

1, 2 or 3 samples may be delivered from each vial

Type of Loading:

Loop: Delivers sample rapidly to sample loop

Concentrator: Delivers sample against back pressure of up to 100 psi (690 kPa) at approximately 0.4 mL/min (0.5-mL vials) or 1 mL/min (5-mL vials)

Mode of Sampling:

Proportional: delivers volume inversely proportional to number of injections per vial

Constant: Delivers fixed volume independent of the the number of injections per vial

Bleed:

On: Displaces excess sample and

any trapped air through bypass valve before sampling

Off: Delivers sample and any trapped air directly to injection valve

Dimension, (H x W x D):

11.3 x 14.3 x 17.5 in.

(28.7 x 36.3 x 44.5 cm)

Amperometry Electronics

Noise: 1 pA (DC amperometry); 20 pC (integrated amperometry)

Potential Ranges: ±2.00 V in 0.01-V increments.

Control Modes: Local or remote via relay closures, TTL, or by PeakNet Software via DX LAN.

Amperometry Flow Cell

Electrodes:

Interchangeable working electrode­gold, platinum, silver, or glassy carbon. Counter electrode—titanium.

Reference electrode—pH-Ag/AgCI com­bination.

Wetted Materials: PEEK, Titanium, Kel-F, polyetherimide, EPR, glass, high density polyethylene (HDPE), and working elec­trode material (gold, platinum, silver, and glassy carbon).

Cell Volume at Working Electrode:

Maximum Operating Pressure: 0.7 MPa (100 psi).

Output Control

Filter: 0 to 10 s response time.

Full-Scale Analog Output Ranges: Conductivity-0.01 gS to 3000 gS Integrated amperometry—50 pC to 200 gC. DC amperometry—50 pA to 300 p.A.

Offset: To full-scale for each range.

Analog Signal Output Voltage: 0.01, 0.1, or 1 V.

Gruppo prodotti: Cromatografia Ionica