| After-sales Service: | on Line Service |
|---|---|
| Application: | Laboratory Apparatus |
| Warranty: | > 1Year |
| Detection Method: | Spectroscopic |
| Advantage: | High Sensitive |
| Principle: | New Spectrometer |
| Customization: |
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Introduction
NB-7090 - The new standard for high performance Zeeman GF analysis available in a flame tandem configuration
NB-7090 atomic absorption spectrometer is a fully automated instrument with three main configurations: NB-7090F
flame analyzer, NB-7090G Zeeman graphite furnace analyzer, and NB-7090 flame and Zeeman graphite furnace
tandem analyzer. Key features include:
1)Transverse graphite furnace heating technology improves sample atomization efficiency and uniformity.
2)Two background correction methods are available: longitudinal Zeeman effect correction and lamp correction.
The operator can select the most suitable mode based on the sample.
3)Unique adjustable magnetic field strength (0.6 - 1.1 Tesla, in 0.1 Tesla increments) allows for element specific optimization
to achieve high sensitivity and precision.
4)8-lamp automated lamp turret with auto-alignment for quick element switching and lamp position optimization
5)Code lamp recognition technology, compatible with both hollow cathode lamps and super lamps
6)High efficiency super lamp power supply, newly designed for higher sensitivity while consuming less power and generating less heat
Unique functional design, easy to operate
Automated burner head height control
The burner head hight can be automatically adjusted using a software-controlled motor. This feature is used to ensure that the burner
head can be accurately and reproducibly positioned on the optical path to optimize the performance of the instrument.
The position of the burner head is stored with the analysis method parameters of each element in a multi-element flame analysis. During a
sample run, each element will be analyzed at the optimal height without operator intervention. The following figure shows the sensitivity
obtained when the burner head height of each element is separately optimized (purple) compared to the sensitivity obtained when the burner
head height is optimized for only a singel element, copper (cyan).
Super lamp power supply
Super lamps are specially designed ultra-high intensity hollow cathode lamp that provide more optical energy. For certain elements, such as As, Se,
Cd, Ni and Pb, super lamps can significantly improve the limit of detection, sensitivity and linearity. NB-7090 atomic absrption spectrometer can be
equipped with up to four super lamp power supplies.
Coded lamp recognition
By simply inserting the element lamp into the lamp holder, the software will automatically identify the element and position of the lamp. This feature
completely eliminates the possibility of operator error when inputting lamp information into the element lamp list.
Graphite Furnace Viewing System
The Graphite Furnace Viewing System uses a camera to view the flame or graphite furnace. This feature is indispensable for the development of
graphite furnace methods. The operator can observe the entire analysis process from injection to atomization in real time. Using visual information,
the desolvation, drying and ashing parameters can be set correctly to produce reproducible and accurate results.
Graphite furnace gas saving mode
The intelligent control of the protection gas switch maximizes the effective use of protection gas and reduces waste when the gas is not needed, cutting
down on the cost of operation.
Excellent performance, accurate results guaranteed
Cutting edge transverse heating, lonitudinal Zeeman effect graphite furnace technology
Compared with transverse Zeeman effect graphite furnace designs, the longitudinal Zeeman effect graphite furnace has the advantage of not needing a
polarizer located along the optical path. This results in a two-fold increase in the amount of energy reaching the detector , which provides higher sensitivity
and better correction linearity. Transverse graphite furnace heating has the advantage of higher temperature and greater temperature distribution uniformity,
which promotes atomization of the sample with high efficiency and uniformity.
Efficient graphite furnace design and precise temperature control provides the user with a reliable and precisely controlled analysis environment. This allows
the NB-7090 to perform automated multi-element, multi-sample analysis with excellent stability and repeatability. Additionally, a 2500°C/Sec maximum heating
rate guarantees optimal atomization conditions for all elements.
Unique Variable Magnetic Field Strenth
A constant magnetic field strength for all elements leads to severe limitations in analytical performance for many sample types. The NB-7090 achieves optimal
background correction and sensitivity by allowing optimization of the magnetic filed strength for each element/matric combination. The applied magnetic field can
be varied from a low of 0.6 to a high of 1.1 Tesla in increments of 0.1 Tesla. This allows the operator to set the optimum field strength for each element, maximizing
the Zeeman Effect as measured through the magnetic sensitivity ratio (MSR). Variable background correction allows the field strength to be adjusted to maximize
both precision and sensitivity. This produces accurate results every time.
Unique double gas route
The AA-7090 features a unique double gas route design, with an inner gas route and an auxiliary gas route. Auxiliary gas is controlled through software. The addition
of auxiliary gas promotes sample ashing and protects the graphite tube, allowing for more firings before replacement.
Two background correction modes
The operator can select between Zeeman effect, and lamp background correction modes based on the requirements of a particular sample matrix.
Accessories
NB-7090 works with Nanbei's furnace autosampler AS-500, and flame/furnace autosampler AS-600. Also it can be used with Nanbei's hydride generator and other accessories.
parameters
Technical Specifications of NB-7050
| Optics | |
| Wavelength Range | 190 nm ~ 900 nm |
| Bandwidth | 0.1, 0.2, 0.4, 1.0 and 2.0 nm, automatic switch |
| Czerny-Turner Grating Mono-chromator Wavelength Accuracy / Indication Error | ±0.1 nm |
| Wavelength Repeatability | ≤ 0.05 nm |
| Grating | 1800 lines / mm |
| Blaze Wavelength | 250 nm |
| Baseline Stability | Static baseline stability ≤ 0.002 A / 30 min |
| dynamic baseline stability ≤ 0.003 A / 30 min | |
| Resolution | Better than 0.1 nm |
| Graphite Furnace System | |
| Characteristic Concentration of Cd | ≤ 0.5×10-12 g |
| Detection Limit | ≤ 1×10-12 g RSD ≤ 3.0% |
| Temperature Control | Max 20 step temperature |
| program. 3 modes of temperature rise | step, slope and flat. |
| Heating Mode | power heating |
| Heating Rate | ≥ 2500ºC / s |
| Flame System | |
| Characteristic Concentration of Cu | ≤ 0.02 μg / mL / 1% |
| Detection Limit | ≤ 0.003 μg / ml RSD ≤ 0.45% |
| Burner Head | Switchable 50 mm and 100 mm titanium burner head, titanium nebulizer and high performance glass nebulizer |
| Position Control | Optimization of height and angle, flame and hydride switch within one min |
Background Correction
Background correction is available for both flame and graphite furnace methods. lamp for flame. lamp or Zeeman for graphite furnace.
Correction Mode: lamp, Zeeman Correction Capability:
a) lamp: When background absorption approaches 1.0 Abs, the instrument is capable of a background correction of 60 times or more.
b)Zeeman: When background absorption approaches 2.0 Abs, the instrument is capable of a background correction of 100 times or more.
| Data Processing | |
| Measurement Methods | Flame absorption, flame emission, graphite furnace, and hydride method. |
| Analysis Method | Linear fitting, nonlinear fitting, standard addition method. |
| Printing Output | Calibration curve, spectrum, analysis conditions, analysis parameters, and analysis results can be automatically stored and printed. |
| Dimensions | 1000 mm (L) x 610 mm (W) x 510 mm (H), 150 kg |
| Power | 220V / 50Hz, instrument 200W, graphite furnace 4 KW |
1. How can I choose the suitable one?
Dear customer, please tell us your detailed requirements by mail or online, we will recommend the suitable one as your request.
2. Does your price is competitive?
Dear customer, we make sure to offer you the best quality with competitive price.
3. How can I pay?
Dear customer, we accept many payment term, such as T/T, Western Union…
4. When I receive it after pay?
Dear customer, normal models can be delivered with 5-7days, please contact us to check transport time to your address.
5. How to deliver?
Dear customer, we can send by Express, by Sea and by Air.
6. Is will be broken during transport?
Dear customer, please do not worry, we do standard export package.
7. What should I do if I do not know how to use?
Dear customer, please do not worry, manual user will be sent together, you can also contact us with more technological support.
8. What should I do if some parts broken?
Dear customer, please do not worry, we have 12months warranty except wear parts. You can also buy parts from us after 12months.
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