7800 Atomic Absorption Spectrophotometer

Item No.: 7800
AAS 7800  is fully PC controlled. It can be flexibly equipped with optional graphite furnace, auto sampler, and hydride generator. Unique optical mechanical design, safe and convenient flame system, optional background correction technologies, as well as
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Description
7800 Atomic Absorption Spectrophotometer 

The multi-media graphite furnace visual system can monitor the sample’s dynamic evolution during drying, ashing and residue burning process in the graphite tube. It enables convenient observation of the auto sampler’s capillary injection needle reaching the best position and depth in the tube, as well as the position of the platform placed in the graphite tube. It ensures analysis precision and graphite tube’s lifetime. 

Sensitive and Reliable
Electronic control of flame gas flow
Closed & isolated optical system
Suspension type of optical platform design
Power control of graphite furnace temperature programming
 
Flexible Configuration
Flame only, graphite furnace only, and combined flame & graphite furnace are available according to demand.
One instrument has multifunctional configuration of flame, graphite furnace and hydride generator.
6-lamp turret meets the requirement of multi-elements analysis.
Complete optional accessories support the instrument’s upgrade and extension.
 
Compact and Easy to Use
Stack design of combined flame and graphite furnace makes the system compact, 10 seconds to complete flame/graphite furnace switch
High-performance auto sampler conveniently and reliably improves laboratory efficiency
Intelligent EZPectrumTM workstation provides simple and easy-to-use user experience and laboratory standard requirements
 
Convenient Operation
National initiative visual system of atomization in graphite furnace
Dynamically monitor drying, ashing and atomization process
Intuitively control the depth and position of sampling
Perfectly demonstrate graphite furnace sampling 

7800 Flame Atomic Absorption Spectrophotometer

7800 Atomic Absorption Spectrophotometer is fully PC controlled. It can be flexibly equipped with optional graphite furnace, auto sampler, and hydride generator. Unique optical mechanical design, safe and convenient flame system, optional background correction technologies, as well as convenient functions provided by the workstation, suit your pursuit of automatic and precise test results.
 
Main Features
 Compact and delicate appearance
 Convenient options of background correction method
 Unique optical design
 Perfect automation control is easily realized by using the software workstation
 Safe, reliable and convenient flame system
 Multi-functional software workstation
 
Specifications
6-lamp turret:
 Wavelength range: 190-900nm
 Wavelength indication error: ≤±0.3nm
 Wavelength repeatability: ≤0.15nm
 Photometric range: -0.1-2.5 (A)
 Spectral bandwidth: 0.1, 0.2, 0.4, 0.7, 1.0, 2.0nm
 Static baseline drift: ≤0.002ABS/30min(Cu)
 D2 background correction capability: ≥50 times when background signal =1A
 Self reversal background correction
 Power supply: AC220V±22V 50Hz±1Hz
 
Flame System
 Air/Acetylene burner head: 100mm
 Nitrous oxide /Acetylene burner head: 50mm
 Spray chamber: polypropylene coating
 Ignition dynamic baseline stability: ≤0.004ABS/30min(Cu)
 Characteristic concentration: ≤0.02μg / ml / 1%
 Repeatability : Cu≤0.5%(Absorbance>0.8Abs)
 Detection limit: Cu≤0.004ug/ml
 Safety system: automatically cut off gas in case of low pressure, power failure, flame out, or burner mismatched.
 
7800 Graphite Furnace Atomic Absorption Spectrophotometer

It achieves perfect combination of graphite furnace and automation technology. Integrate graphite furnace and auto sampler into one module, and solve the problems of auto sampler adjustment and optical path calibration during switching process. Checked by hundreds of laboratories, this graphite furnace system is extremely cost effective.
 
It can be used with flame atomic absorption spectrophotometer. From high concentration ppm level to trace ppt level can all be analyzed. The atomizer needs no switching, which greatly simplifies operation.
 
Main Features
 6-lamp turret, multi-lamps can be preheated simultaneously
 85 position auto sampler
Max. heating speed: 3000℃/s; Working temperature of graphite furnace: room temperature-3000℃
 Compact design, fully automatic process control
 Self reversal and D2 background correction
 
Gas Control
 Separate control of in-tube gas and external gas. During the analysis, keep the gas flowing outside the tube, cut off the gas in the tube at atomization stage, effectively protect graphite tube, maximize the tube’s lifetime, and gain high analysis sensitivity.
 
Visual System of Graphite Furnace 
 The multi-media graphite furnace visual system can monitor the sample’s dynamic evolution during drying, ashing and residue burning process in the graphite tube. It enables convenient observation of the auto sampler’s capillary injection needle reaching the best position and depth in the tube, as well as the position of the platform placed in the graphite tube. It ensures analysis precision and graphite tube’s lifetime. Meanwhile, it is a a perfect training tool.
 
Specifications
 Max. heating speed: 3000℃/s;
 Working temperature of graphite furnace: room temperature-3000℃
 Characteristic value: Cd≤1pgCu≤10pg
 Precision RSD: Cd≤3%Cu≤3%
 Weight: 80kg
 Dimension: 700*550*440mm
 Safety: over current protection, alarm when the pressure of protection gas is low, automatically stop heating when over temperature  
 Power supply: 220VAC
 Power: 6000W (instantaneous maximum power)
 
7800 Multi-elements Fast Analysis Atomic Absorption Spectrophotometer
 
The outstanding feature of this product is that multi-elements can be analyzed simultaneously. It is very suitable for analyzing multiple components in one sample. It uses similar analysis mode to that of ICP, but has the price of atomic absorption spectrophotometer. It can greatly increase analysis efficiency and save sample volume. Besides, this model, according to user’s demand, can also analyze one single component, working in the same mode as a flame atomic absorption spectrophotometer.
 
Main Features:
 Simultaneously analyze 4-6 elements within one minute (similar speed to ICP)
AAS price while enjoy ICP function (multi-elements analysis simultaneously)
 Fast analysis, similar to the speed of ICP, test result of multiple components come out simultaneously by one sampling
 Freely combine the multiple elements according to the requires of analysis
 Save sample volume for multiple components analysis
 Rapid change of gas flow, grating rotation, slit and hollow cathode lamps
 Unique optical design greatly increases the sensitivity in visible range
 Excellent mechanical and optical system plus outstanding software ensure the measurement accuracy
 
Specifications
 Wavelength range: 190-900nm
 6-lamp turret: 1 lamp working, and 3 lamps preheating
 Wavelength repeatability: ±0.1nm
 Wavelength accuracy: ±0.2nm whole range
 Photometric range: 0-2.5Abs
 Resolution: spectral bandwidth = 0.2nm, can separate Mn two lines(279.5nm and 279.8nm), valley/peak energy ratio<20%
 Spectral bandwidth: 0.1, 0.2, 0.4, 0.7, 1.0, 2.0nm
 Static baseline drift: ≤0.002ABS/30min(Cu)
 Weight: 80kg
 Dimension: 500*450*430mm
 Grating: 1800lines/mm
 D2 background correction: background signal =1Abs, correction capability ≥50 times self reversal background correction.
 
Accessories

Graphite Furnace
 Graphite furnace atomization device is an electrothermal atomizer that increases the sensitivity of most metal elements from mg/L to μg /L
 Advanced optical controlled temperature programming system, realize automatic full power heating at atomization stage.
 Heating condition setup: drying, ashing, atomization and two heating modes.
 Temperature range: ambient-3000℃
 Temperature control mode: voltage feedback mode for drying and ashing, voltage or optical control feedback for atomization
 Characteristic concentration: Cu<1.0×10-10g, Cd<1.0×10-12g
 
Auto Sampler
 Automatic curving function: do not need manual set of calibration curves. Prepare a standard solution, then the sampler will automatically set the calibration curve and measure.  
 Intelligent residual removal function: do not need artificial judgement and operation. It will automatically tell whether there are residuals and remove residuals to eliminate cross- contamination
 Intelligent dilution function: fully automatic dilution. According to sample concentration, the instrument will automatically give dilution ratio, match to the best measurement area, and automatically finish dilution and measurement. The whole process needs no manual intervention
 In-tube visual system: monitor injection and drying process. All tiny subtleties of drying come into your view, enabling fast and accurate setup of ashing temperature
 Quality control: intelligent analysis quality control technology, calibrate blank and quality control sample at regular intervals and monitor the precision of test results
 
Hydride Generator
 Essential analytical equipment for environmental monitoring, food hygiene, quality inspection, commodity inspection, and drinking water monitoring
 Highly automated: only one start key. Sampling, generating, measuring and cleaning will all be done by pressing the button.
 Unique electrothermal quartz absorption tube: Small and exquisite device, heated quickly, convenient to install, with stabled temperature, more than 10 times lifetime than flame, free of gas consumption, analytical method can be rapidly changed once it is cooled down.
 Adopt advanced flow injection technology. Sample reaction is more uniform. The stability is improved. RSD<2%
 Measurement rate: 100times/hour
 Single sampling volume: <2mL
 
Flame System
Item 5800 7800
Wavelenth Range 190-900nm 190-900nm
Grating 1800lines/nm 1800lines/nm
Wavelength Repeatability ±0.1nm ±0.1nm
Wavelength Indication Error Whole range ±0.2nm Whole range ±0.2nm
Optical System Czerny-Turner system, integrated optical platform, fully sealed optical system Czerny-Turner system, integrated optical platform, fully sealed optical system
Resolution Spectral bandwidth =0.2nm can separate Mn two lines (279.5nm and 279.8nm, valley/peak energy ratio <30% Spectral bandwidth =0.2nm can separate Mn two lines (279.5nm and 279.8nm, valley/peak energy ratio <20%
Spectral Bandwidth 0.1nm, 0.2nm, 0.4nm, 1.0nm 0.1nm, 0.2nm, 0.4nm, 0.7nm, 1.0nm, 2.0nm
Static Baseline Drift ≤0.004ABS/30min(Cu) ≤0.002ABS/30min(Cu)
Background Calibration Technology D2 (background signal =1Abs, background correction capability ≥50 times D2 (background signal =1Abs, background correction capability ≥50 times
Instrument Design Integrating structure of suspended internal and external optical path Integrating structure of suspended internal and external optical path
Lamp Turret 4-lamp turret ( 4 lamps can be preheated simultaneously 6-lamp turret ( 6 lamps can be preheated simultaneously
Burner Head Air-acetylene burner head (100mm, optional 50mm nitrous oxide-acetylene is available) Air-acetylene burner head (100mm)
Nebulizer High-efficiency glass nebulizer High-efficiency glass nebulizer
Ignition Dynamic Baseline Drift ≤0.004ABS/30min(Cu) ≤0.004ABS/30min(Cu)
Characteristic Concentration (Cu) ≤0.025μg/ml/1%(Absorbance>0.8ABS) ≤0.02μg/ml/1%(Absorbance>0.8ABS)
Detection Limit Cu≤0.008ug/ml Cu≤0.004ug/ml
Repeatability (Cu) ≤0.5% ≤0.5%
Gas Flow Control Manual Auto
Ignition Method via buttons on the control panel PC control
Safety Protection Automatically cut off gas in case of low pressure, power failure, flame out, or burner mismatched
 
Automatically cut off gas in case of low pressure, power failure, flame out, or burner mismatched
 
Background Correction Method SR and D2, correct 1A background. When background signal =1Abs, correction capability ≥50 times SR and D2, correct 1A background. When background signal =1Abs, correction capability ≥50 times
Dimension 700*550*530mm 700*550*530mm
 
Graphite Furnace System
Item Specification
Graphite Furnace Visual System Must be configured with graphite furnace visual system, to intuitively monitor the sample’s dynamic evolution during drying, ashing and residue burning process in the graphite tube, conveniently observe the auto sampler’s capillary injection needle reaching the best position and depth in the tube, as well as the position of the platform placed in the graphite tube. It ensures analysis precision and graphite tube’s lifetime. Meanwhile, it is a perfect training tool.
 
Graphite Furnace Protection Instantly stop heating and alarm in case of graphite furnace accidentally broken
Heating Method Longitudinally
Internal Gas Flow Automatic adjustment
Working Temperature Ambient - 3000℃
Max. Heating Rate ≥3000℃/s
Characteristic Value Cd≤1pgCu≤10pg
Measurement Repeatability Cd≤3%Cu≤3%
Temperature Control Method Power control for drying and ashing, optical control max. Power heating for atomization
Operation Software Windows operation software
Extended Function Hydride generator
Dimension 280*550*450mm