1. Optical system

1.1 Overall description

1.1.1 Dual beam system with background correction and flame emission functions

*1.1.2 Asymmetric modulation technique is used to reduce noise by making the passage time ratio of the sample beam to the reference beam 2:1

1.1.3 Total Reflection Mirror System with Quartz Coating

1.1.4 Fully enclosed optical system, dust-proof and steam proof



1.2 Monochromator

1.2.1 Overall design: Ebert Fastie design, focal length 333 mm

*1.2.2 Wavelength Range 175-900 nm

*1.2.3 Grating: 1800 lines/mm line density, dual brilliant wavelength, 1.6 reciprocal dispersion coefficient

1.2.4 Wavelength selection: automatic wavelength selection and automatic peak searching

1.2.5 Slit Adjustment

*1.2.5.1 Continuous adjustment, spectral bandwidth range of 0.1-2 nm, adjustment step size of 0.1 nm

*1.2.5.2 For graphite furnace operation, the reduced slit height applies to all slit widths

1.2.5.3 Automatic setting of slit width and height

1.2.6 Wavelength scanning: with automatic scanning function



1.3 Detector: Wide range photomultiplier tube



2. Element lights

2.1 Hollow cathode lamp

*2.1.1 8-lamp holder with automatic light selection function

2.1.2 Automatic optimization on two planes to improve luminous flux

2.1.3 Automatic multi-element operation with automatic preheating function for the next lamp

2.1.4 Available standard hollow cathode lamps



2.2 Super light: optional.



3. Background correction

*3.1 Use superpulse background correction technology to correct background peaks at a reading frequency of 200 times per second (50 Hz) or 240 times per second (60 Hz)

*3.2 There is only a time interval of about 1 ms between pulses and insertion measurements, which ensures the highest possible measurement accuracy

3.3 High precision deuterium lamp provides a calibration range of 175-425 nm, which can be calibrated up to 2.5 Abs



4. Flame control

4.1 Overall Description

4.1.1 Automatically set flame type and gas flow rate from stored method conditions

4.1.2 Programmable ignition and shutdown sequence

4.1.3 Automatically change flame state during automatic multi-element operation

4.1.4 Programmable settings for automatic shutdown after completion of analysis

4.2 Safety interlock device

4.2.1 Pressure of air, acetylene, and N2O gases, presence of combustion head, type of combustion head, liquid seal level, presence of atomizer and pressure relief plug, flow rate of oxidizing gas, flame state, and main power supply

4.2.2 Any malfunction that occurs will result in the inability to ignite or turn off the flame

4.2.3 Screen display of safety interlock status



5. Flame Atomization System

5.1 Combustion Head

5.1.1 Design of all titanium combustion head

5.1.2 Combustion head length: 10 cm

*5.1.3 The position of the combustion head can be automatically adjusted through software

*5.1.4 Optional Combustion Head Rotation Function



5.2 Nebulizer

5.2.1 Pre mixing Design with Inert Solid Polymer Mixing Chamber

5.2.2 The atomizer adopts Pt Ir alloy capillary tube and inert Venturi tube to improve its ability to resist acid shock

5.2.3 Using a locking mechanism to achieve adjustable sample lifting rate

5.2.4 Inert Impact Ball

5.2.5 Nebulizer bolts and pressure relief bolts with safety interlock devices

5.2.6 Integrated liquid seal with liquid level interlock function



5.3 Quick disassembly and assembly of graphite furnace

*5.3.1 It has the function of quick disassembly and assembly of graphite furnace to switch between flame analysis and graphite furnace analysis



6. Ensure performance indicators

*6.1 Sensitivity and Accuracy: Using a 5 mg/L Cu solution, in the same measurement, a sensitivity of>0.8 abs and an accuracy of RSD<0.45% can be obtained simultaneously

*6.2 Typical detection limit: The detection limit for Cu is 0.001 ppm



7. Graphite furnace system

7.1 Background deduction method: Deuterium lamp deduction background

*7.2 Heating method for graphite tube: longitudinal heating

7.3 Graphite Furnace Components

7.3.1 Graphite tube and platform, installed in a closed space with quartz windows, permanently connected to the power supply through a plug rope with an air path, cooling water pipe, and wires

7.3.2 Equipped with 2 channels of inert protective gas

7.3.3 Temperature range: Room temperature~3000 ℃

7.3.4 Maximum temperature rise rate controlled by computer: 2000 ℃/s

*7.3.5 Temperature programming without step limit, each step including heating and insulation, gas selection, and reading options

*7.3.6 Temperature controller monitors current and voltage, providing precise control through energy feedback throughout the entire temperature range, during heating and insulation stages

7.3.7 Equipped with safety interlock devices for inert gas pressure and cooling water pressure

7.3.8 Correction of Temperature Changes in Cooling Water

7.3.9 Inert gas: Ar or N2, pressure 70-200 kPa (10-30 psi)

7.3.10 Cooling water: flow rate 1-2 L/mim, pressure 100-200 kPa (15-30 psi)



7.4 Automatic Sample Injector

*7.4.1 Can accommodate 40 samples and 10 pre mixed standard samples (or 1 automatic mixing solvent for up to 10 standard samples)

7.4.2 Sample volume: 2 ml (for standard and sample), 5 ml (for automatic mixing of standard), 10 ml (for blank solution and chemical improver)

7.4.3 Injection volume: 1-100 μ l, programmed in increments of 1 μ l

7.4.4 Capillary tube made entirely of PTFE material

7.4.5 1-liter cleaning solution tank

7.4.6 Set the position of the probe controlled by the computer based on the stored coordinate values

7.4.7 Program options include: standard automatic mixing, standard addition automatic mixing, chemical regulator automatic injection, multiple sample injection, automatic recalibration and complete recalibration, calibration sample and addition recovery



8. Hydrogen Generator

8.1 Overall Description

8.1.1 Continuous flow hydride and cold steam generation system for analysis of As, Sb, Se, Te, Bi, Ge, Sn&Pb at ppb levels

8.1.2 Hg that can be used simultaneously for analyzing ppb levels using cold steam method

*8.1.3 Produced by the atomic absorption supplier's original factory and controlled through atomic absorption operation software



8.2 Performance Analysis

*8.2.1 Sample yield: 60 pieces/hour

*8.2.2 Accuracy RSD<1% at ppb level



9. Software

9.1 Overall Description

9.1.1 Software Platform Based on Windows 7

9.1.2 You can choose between English or Chinese versions

9.1.3 Can control all instruments and accessories of the same brand



9.2 Data Processing System

9.2.1 Provide analysis results of atomic absorption or emission

9.2.2 Absorption range up to 3.0 Abs

9.2.3 Measurement methods: integration, measurement average, peak height or peak area

*9.2.4 Average and RSD of up to 50 repeated readings

9.2.5 Calibration curves for up to 10 standard samples

9.2.6 Linear Least Squares Curve Correction

9.2.7 Linear Least Squares Curve Zero Crossing Correction

9.2.8 Accurate Curve Fitting Correction

9.2.9 Polynomial Curve Correction

9.2.10 Standard addition or internal standard

9.2.11 It is possible to program and control when to perform single standard sample slope calculation or complete recalibration based on the cumulative time or number of samples taken

9.2.12 Password protected analysis results allow for the removal of unwanted readings of standards or samples

9.2.13 Weight or diluent correction

9.2.14 All edits can be analyzed during and after the process



9.3 Graphic Display

9.3.1 High resolution color display: atomic absorption signal, background signal, graphite furnace temperature program, calibration curve, peak measurement, and wavelength scanning

9.3.2 Multiple graphic display modes, including overlapping discontinuous peaks

9.3.3 Optional Tracking Absorption Scale

9.3.4 Graphic cursor can be used to obtain digital information from graphic tracking

9.3.5 Window enlargement function can expand the display of graphic trajectories



9.4 Digital Storage

9.4.1 All data can be stored, including linking graphical trajectories and analysis results

9.4.2 can also store: analysis method, sample label, sample sequence, method sequence, weight and diluent, analysis report header and footer, calibration and analysis results



9.5 Report Generation

9.5.1 Reports can be printed from all stored analysis results, whether they are single element analysis results or a list of multi-element analysis results obtained by combining different tests and using different techniques

9.5.2 All operating parameters, calibration graphics, header and footer, method statements, sample labels, result statistics, weight, and dilution factors can be printed out

9.5.3 Software supports multiple types of printers



9.6 Quality Control Agreement

9.6.1 All quality control functions are available, including verifying samples, adding and recycling, quality control upper and lower limits, calibration and correction