GRD-3202 graphite furnace system is a system specially used for the quantitative analysis of trace elements in substances by graphite furnace atomic absorption method. It is an important optional accessory for the SP-IAA320 atomic absorption spectrophotometer.

Features:
• Heating steps: 9 steps
• Temperature range (nominal Temperature): 20℃~3000℃
• Slope heating time: 0~999s
• Heating holding time: 1s~999s (the sum of both times should be less than 999 seconds)
• Inert gas needed: argon, the pressure of entry larger than 0.3Mpa
• Cooling water: tap water or cycling water, flow rate no less than 2L/min

SP-IAA1800H atomic absorption spectrometer is widely used in scientific research, quality inspection, disease control, environmental protection, metallurgy, agriculture, forestry, chemical industry, and other industries, innovative software and hardware design to ensure the accuracy of the sample analysis, safety, ease of use, simple and convenient instrument maintenance.

Features:
• High precision fully automatic optical system: Large area grate with 1800 lines/mm dispersion rate, novel self-collimating monochromator, all lense is Shi Ying coated, wide detection range and optical stability ensure that accuracy of analysis. Automatic 6 lamp holder equipped with 6 independent lamp power supply, can respectively preheating.
• Polymer atomizing chamber: High-molecular material anti-corrosion atomization chamber, acid and alkali resistant, including hydrofluoric acid, whether organic or inorganic solution can get better sensitivity and stability.
• Titanium burner: Titanium burner, optional 50mm and 100mm burner, air cooling pre-mixed type, corrosion resistance, high salt resistance, greatly improve the efficiency of the flame and flame analysis accuracy.
• Fully automated analysis: It can automatically complete safe ignition, extinguishing, and switching, with a reliable structure and low failure rate, thus ensuring the sensitivity and repeatability of the flame method; The light source system automatically switches the six-lamp-position platform, can directly use the high-performance hollow cathode lamp, improves the sensitivity of flame analysis, automatically adjusts the power supply parameters and the beam position, and fully automatically scans and searches for the wave crest.
• Graphite furnace temperature control: Double temperature control of internal and external air, 20-order linear or nonlinear temperature rise, to ensure that the elements to be tested have good sensitivity; Enrichment and concentration were carried out 20 times in the furnace. The inner wall temperature of the graphite tube was monitored by longitudinal light control, and the maximum temperature could be increased to 3000 C/s.
• High technology index: The element test sensitivity of SP-IAA1800H atomic absorption spectrometer reaches the advanced level in the industry, with a sensitivity ≤0.015 µ g/mL/1%; Baseline drift less than 0.003Abs/30m with better stability than 0.005Abs/4h.
• Background correction system: The deuterium hollow cathode lamp and the self-absorption button background are adopted for background correction so that the interference of molecular absorption in the determination of low content is eliminated, the emission noise of the deuterium lamp is reduced, the service life is prolonged, and the deuterium hollow cathode lamp has good stability. When the background signal of the deuterium lamp is 1A, the background subtraction ability is > 50 times.
• Intelligent analysis: Intelligence is very strong, humanized design, flame, and graphite furnace atomization device automatic switching, graphite furnace atomization device automatic optimization, automatic setting to adjust the flame height, automatic ignition, automatic optimization of horizontal position, the system automatically set the gas flow. In case of power outage, misoperation, acetylene leakage, etc., the system will automatically start the safety protection function;
• Automatic sampler: Integrated with a graphite furnace, a high-precision injector was used, and the minimum volume of a sample could be 0.5 µL. The intelligent online dilution and concentration function was realized.

Features:
• Build-in computer data processing and LCD display: stable and reliable with the functions of integral holding, peak height and area, auto zero adjusting, deuterium lamp background correction, multi-linear and nonlinear curves fitting, various parameters and working curves displayed in screen and report printing, etc. It is equipped with an interface for externally linking PCs.
• Stability: Double-beam system can automatically compensate for the light source drift and wavelength drift caused by the variation of temperature (with the function of eliminating the affection of wavelength drift on the baseline stability) and electronic circuit drift so as to reach a good basic line stability.
• Quickly: The cathode lamp needs not to be pre-heated for a long time and the sample can be analyzed immediately. It is the preferable instrument chosen by users to conduct analysis of multiple kinds of elements and fast analysis of samples.
• High precision of measurement: The gas path system is equipped with precision pressure stabilizing and current stabilizing devices to reach stable flame and low noise. A specially designed fine light beam passes through the flame to ensure a high-precision analytical test and low characteristic concentration.
• High energy optical path: A total reflection system is adopted to eliminate color differences in full range. By means of chemical conversion, a round light spot of the light source becomes a long light spot, which enters into the slit. Therefore the light flux of the double beam is enhanced.
• Long-life and anti-corrosive atomization system: The burner is made of new type titanium alloys, anti-corrosive and fast thermal equilibrium. It meets the requirement of measurement sensitivity without water-cooling.
• Multi-functional analysis mode: for methods of flame absorption, flame emission, graphite furnace atomic absorption, and hydride generation.
• Safe and reliable gas path system: Special devices for quick gas conversion and safety protection can be used to analyze air-acetylene flame.
• Complete set of accessories: to be supplied with the instrument and ready for use after they are purchased.

The atomic absorption spectrophotometer is completely controlled and operated by a PC, with a unique optical and mechanical design, a safe and convenient flame system, advanced graphite furnace temperature control technology, and various convenient functions provided by the workstation.

Features:
• Completely controlled by PC.
• Integrated floated optical platform design can obviously improve the optical system shock resistance and keep it stable through the use of the optical signal for the long term.
• Eight light stands can be changed automatically and preheat the eight lights meantime as well as optimize the working condition of the hollow cathode lamp.
• Position adjusting: the best height of the flame burner and can automatically set the front and rear positions.
• Fully automated wavelength scanning and peak searching.
• Complete safety chains protection equipment: the function of warning and automatic safety protection against the wrong burner, leakage of the gas, under voltage of air, and abnormal flame.
• Deuterium lamp and self-absorption background regulation.
• Data processing: super strong database, possesses more than 500 data self-storage and cut-off storage functions, can store the analyzed result in the form of EXCEL and the testing method and the result can be randomly called.
• Measuring method: flame absorption method and emission method.
• Result printing: parameter printing, data result printing, and diagram printing.

Complete Automatic Controlling System
With the help of the software, the following can be easily achieved:
• Selection of the element lamp
• Up-down-front-rear adjustment of the lifter
• Adjustment of the optical energy
• Selection of the slit
• Determination of wavelength scanning and peak searching
• Selection of the atomizer
• Setting of the background deduction method
• Controlling the gas flow
• Automatic flaming and flaming out
• Setting of the graphite furnace testing method