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Spectrophotometer

Atomic Absorption

EAA-515

Model: EAA-515

Features:

A flame emission burner head can be installed to perform flame emission analysis to akali metais as K, Na etc.
Adopting FUZZY-PID and dual curve mode light-controlled temperature control technique, temperature auto-correction technique, ensures fast heating, good temperature reproducibility and high analytical sensitivity. The temperature control accuracy is (2)
Adopting large-scale programmable logic array and Inter I2C bus technology (3)
Alarm and automatic protection to fuel gas leakage, abnormal flow, insufficient air pressure and abnormal flame extinction in flame system (3)
Alarm and protection function to insufficient carrier gas and protective gas pressure, insufficient cooling wate supply and over-heating in graphite furnace system (2)
asy-to-use AAS analysis software is made under Windows operating system, realizing fast parameter setting and optimization
Auotmatic calculation of sample concentration (content), mean value, standard deviation and relative standard deviation calculation
Automatic 6-lamp turret, automatic adjustment of lamp current and optimization of light beam position
Automatic changeover between flame and graphite furnace operation, automatic optimization of position parameters, automatic ignition and automatic gas flow setting
Automatic sample dilution, automatic curve fitting, automatic sensitivity correction (2)
Automatic spectral bandwidth changing (4)
Automatic wavelength scanning and peak picking (4)
Automatically controlled changeover of the integrated flame and graphite furnace atomizer featuring easy operation and time saving eliminates human labor (2)
European type sockets and AMP adapters with high reliability to ensure long term reliability of the whole electronic system (2)
Graphite furnace with pneumatic control and pressure lock ensures constant pressure and reliable contact (2)
Measured data and final results can be printed out and edited in Excel format
Multi-function autosampler features automatic standard sample preparation, automatic correction of sampling probe depth, automatic tracing and correction of liquid surface height in the sample vessel, with the sampling accuracy of 1% and reproducibility of 0.3%, realizing fully automation of graphite furnace analysis
Mutil-elements determination in sequence to the same sample
The patented flame analysis technique adopting rich oxygen air-acetylene flame as the substitution for nitrous oxide-acetylene flame for high temperature element analyses, such as Ca, Al, Ba, W, Mo, Ti, V, etc. Flame temeperature is continuously adju (3)

Specifications:

Background correction:

The D2 lamp background correction capability at 1A is better than 30 times

The S-H background correction capability at 1.8A is better than 30 times.

Lamp turret:

Motorized 6-lamp turret ( Two high performance HCLs can be mounted on the turret to increase the sensitivity in flame analysis.);

Lamp current adjustment:

Wide pulse current: 0~25mA

Narrow pulse current: 0~10mA

Lamp power supply mode:

400Hz square wave pulse; 100Hz narrow square wave pulse+400Hz wide square wave pulse

Air-C2H2 flame Oxygen-rich Air-C2H2 flame:

Cu: Characteristic concentration≤0.025mg/L

Detection limit≤0.006mg/L;Ba: Characteristic concentration ≤ 0.22mg/L

Al: Characteristic concentration ≤ 0.4mg/L

Function Expansion:

Hydride vapor generator can be connected for hydride analysis

Main Specification:

Wave length range:

190-900nm

Wave length accuracy:

Better than ±0.25nm

Resolution:

Two spectral lines of Mn at 279.5nm and 279.8nm can be separated with the spectral bandwidth of 0.2n

Baseline stability:

0.004A/30min

Optical System:

Monochromator:

Single beam, Czerny-Turner design grating monochromator

Grating:

1800 l/mm

Focal length:

277mm

Spectral Bandwidth:

0.1nm, 0.2nm, 0.4nm, 1.2nm, auto-switch over

Flame Atomizer:

Burner:

10cm single slot all-titanium burner

Spray chamber:

Corrosion resistant all-plastic spray chamber

Nebulizer:

High efficiency glass nebulizer with metal sleeve, sucking up rate:6-7ml/min

Graphite Furnace:

Temperature range:

Room temperature~3000ºC

Heating rate:

2000℃/s

Graphite tube dimensions:

28mm(L)×8mm(OD)

Characteristic mass:

Cd≤0.5 ×10-12g, Cu≤5 ×10-12g, Mo≤1×10-11g

Precision:

Cd≤3%, Cu≤3%, Mo≤4%

Detection and Data Processing System:

Detector:

R928 Photomultiplier with high sensitivity and wide spectral range.

Software:

Under Windows operating system

Analytical method:

Working curve auto-fitting; standard addition method; automatic sensitivity correction, automatic ca

Repeat times:

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

Multi-task Functions:

Sequential measurement for multi-element determination to the same sample

Condition reading:

With model function

Result printing:

Measurement data and final analytical report printout, editing with Excel

Communication:

Standard RS-232 serial port

Dimensions and weight:

Main unit:

107×49×58cm, 140kg

Graphite furnace:

42×42×46cm, 65kg

Autosampler:

40×29×29cm, 15kg

Graphite Furnace Autosample:

Sample tray capacity:

55 sample vessels and 5 reagent vessels

Vessel materia:

Polypropylene

Vessel volume:

3ml for sample vessel, 20ml for reagent vessel

Minimum sampling volume:

1μl

Repeatable sampling times:

1 -99 times

Sampling system:

Accurate dual pump system, with 100μl and 1ml injiectors

Other Models of Spectrophotometer :

EAA-505

EAA-510

EAA-520

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