System Design

Optical System

High light throughput Single Beam

Monochromator

Czerny-Turner type with 2 focal lengths at 355.8 and 345.6 mm. Automated wavelength and slit
selection.

Wavelength Range

185-900 nm

Grating

Holographic grating with 1800 lines/mm

Slits

Automated slit selection 0.1; 0.2; 0.7 and 1.4 nm

Detector

Wide range UV sensitive photo multiplier tube

Lamp

Automated 8-lamp turret with independent lamp power supply for each lamp. Two additional heating
circuits for preheating lamps.

Background Correction

Deuterium (D2) Background Correction and Smith-Hieftje (Self-absorption) Background Correction.

Graphite Furnace System

Graphite Furnace

Integrated computer-controlled Longitudinal Heated Graphite Furnace.

Furnace Programs

Analytical furnace programs can be set with up to 20 steps.

Temperature

Programmable temperature up to 3000 °C in 1 °C increments.

Heating Rate

Maximum linear heating rate is 3000 °C/s

Ramp Time

1 to 255 s in step of 1 sec

Holding Time

1 to 255 s in step of 1 sec

Graphite Furnace Opening
and Closing

Pneumatic opening and closing of graphite frunace by software controlled.

Gas Flow

Choice of two inert gases with computer-controlled flows. Separate control of inert gas stream is Argon for
internal and external gas flows. The external gas flow is 1 L/min and internal gas flow in the graphite tube is
0 mL/min (gas stop), 100mL/min (low flow), 200 mL/min (medium flow), 300 mL/min (maximum flow).

Cooling System

A closed circuit cooling system is optimized to save time, water and provides stable furnace condition. Water
temperature during operation is approx. 38 °C.

Autosampler

Injection volumes from 1-50 μL in increments of 1 μL are user selectable. Automatic dilutions and additions
of three different modifiers are available. Corrosion resistant sample tray holds 87 positions.
The system provides automatic calibration up to 20 points from one or two stock standard solutions and
dilution by volume reduction or intelligent dilution, which is fully automatic by software controlled.

Safety Functions

Safety interlocks will shut down the furnace if the cooling water fails, the gas flow is too low, the furnace
temperature is too high, or the graphite tube breaks.

Hydride System (option)

The Hydride system is a continuous flow system for the determination of As, Se, Sb, Sn, Te, Bi and Hg at
low and sub microgram per liter (ppb) levels using a electrically heated quartz cell. For the determination of
Hg, the cold vapor technique is used. Gas flow and the two peristaltic pumps for the supply of reagent, acid
and samples solution are controlled by the software.

Other information

Software

SPWin-AA Software Package

Weight

120kg

Dimensions (W x D x H)

800 mm x 800 mm x 575mm

Environmental Requirements

10 °C up to 35 °C Rel. humidity max. 85 %

Power Requirements

110 / 220V±10%, 50/60Hz, 5000W (Max.)