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Spectrophotometer


Atomic Absorption Spectrophotometer AAS-009

    Features:

     •Dual light source and dual atomizers, a unique integrated structure design with a high degree of user friendliness.
    • Parallel flame and graphite furnace atomizer, without mechanical movements and changeover, ensuring long time stability and reliability.
    • Adopting constant magnetic field, transverse Zeeman background correction device for both flame and graphite furnace analysis, with super powerful dual atomizer high background correction capability over the whole wavelength range.
    • Multiple shielding technology successfully decreases magnetic interference.
    • Automatic 8 x 2 lamp turrets, automatic adjustment of lamp current and optimize of light beam position.
    • Automatic wavelength scanning and peak picking.
    • Automatic spectral bandwidth changing.
    • Automatic changeover between flame and graphite furnace operation, automatic ignition and automatic gas flow setting.
    • Newly designed graphite furnace and its power supply system with ultra-rapid heating, super long time stability and • super high power efficiency.
    • Intelligent fully automated sampler, with automatic working curve generation, automatic tracing and correction of liquid surface height in the sample vessel, automatic long term memorizing of the sampling probe position.
    • Convenient, friendly and reliable AAS software under Windows XP operation system.
    • Quick setting, automatic adjustment and automatic optimization of instrument parameters.
    • User selectable analytical report formats.

 

Technical Specification:

Model No:  AAS-009

Atomic  Absorption Spectrophotometer LAAS-810

Main Specification

Wavelength Range

190-900nm

 

Wavelength Accuracy

±0.5nm

 

Resolution

Better than 0.3nm

 

Baseline Stability

0.005A/30min

 

Light Source System

Lamp Turret

Automatic 8×2-lamp turrets (Two high performance hollow cathode lamps can
be mounted on each turret );

 

Lamp Current

0~15mA

 

Lamp Power Supply Mode

200Hz square wave pulse

 

Optical System

Monochomator

Czerny-Turner type Double Beam

 

Grating

1800 l/mm

 

Focal Length

430mm

 

Blazed Wavelength

250nm

 

Spectral Bandwidth

Fame mode: 0.2, 0.4, 0.8, 1.6mm
Graphite furnace mode: 0.2, 0.4, 1.2mm

 

Atomizer

Flame Atomizer

Burner: 10cm single slot all-titanium burner
Spray chamber: directly formed and made of corrosion resistant material.
Nebulizer: High efficiency glass nebulizer with metal sleeve.
Position adjustment: flame height is adjustable.

 

 

 

Graphite Furnace Atomizer

Temperature range: room temperature~3000°C
Heating rate: 3000°C/s
Graphite tube dimensions: 30mm(L) X 7mm (OD)

 

Graphite Furnace

Sample Tray Capacity

55 sample vessels and 5 reagent vessels

 

Autosampler

Vessel Material

Polypropylene

 

 

Vessel Volume

2ml for sample vessel, 20ml for reagent vessel

 

Minimum Sampling Volume

1µl

 

Repeatable Sampling Times

1~99 times

 

Sampling System

Accurate dual pump system, with 100?l and 1ml injectors.

 

Detection and Data

Detector

R955 Photomultiplier with high sensitivity and wide spectral range

 

Processing System

Software

Professional AAS software under Windows XP operating system

 

 

Analytical Method

Working curve auto-fitting; standard addition method automatic sensitivity
correction; automatic calculation of concentration and content.

 

Repeat times

1~99 times, automatic calculation of mean value, standard deviation and
relative standard deviation.

 

Multi-task Functions

Sequential determination of multi-elements in the same sample

 

Condition Reading

With model function

 

Result Printing

Measurement data and final analytical report print out, editing with Excel.

 

Communication

Standard RS-232 serial port; supporting USB port communication

 

Background correction System

Flame constant magnetic field Zeeman

 

 

background correction

Magnetic flux density: 1.0T

 

Graphite furnace constant magnetic field

 

 

Zeeman background correction

Magnetic flux density: 1.0T

 

Dimensions (LxWxH) mm3

Main unit:

1160 × 630 x 570

 

Auto-sampler:

320 x 270 x 260

 

Weights

Main unit:

160Kg

Auto-sampler:

15Kg