Introduction：
BK-AA3618 is a dedicated flame atomic absorption spectrophotometer, BK-AA3638 and BK-AA3668 are integrated systems combining both flame and graphite furnace atomization technologies. These instruments are widely utilized in environmental monitoring, food safety testing and metallurgical analysis for the accurate determination of trace and major elements.
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Atomic Absorption Spectrophotometer BK-AA3618 BK-AA3638 BK-AA3668
Features:
1. Total reflection optical system ensures excellent signal-to-noise ratio of the instrument.
2. Eight-lamp position with 360° rotation design.
3. Workstation software under MS Windows system, featuring concise, professional, automatic and full operation.
4. QA/QC functions: For each test, the SD and RSD of absorbance are submitted, while the SD and RSD of calculated concentration are provided; the working curve for standard samples automatically checks the correlation coefficient.
5. Full information measurement: Each measurement saves results from different data processing methods (average, peak height, peak area, and statistical results) for user analysis.
6. One-click database quickly completes settings such as wavelength, spectral bandwidth, lamp current, negative high voltage, and energy balance.
7. Graphite Furnace Heating Method: Longitudinal heating of the graphite furnace (ensures uniform gas-phase temperature inside the graphite tube, allowing the sample to reach atomization temperature simultaneously and instantaneously, thereby improving atomization efficiency and measurement accuracy, ensuring more reliable analytical results, reducing performance requirements for the furnace body, and extending its service life)(Only for BK-AA3638 & BK-AA3668).
Technical Parameters:
Model
BK-AA3618
BK-AA3638
BK-AA3668
Instrument Type
Flame system
Flame & GFAA integrated system
Optical System
Beam Type
Double-beam
Diffraction Grating
Groove 1800lines/mm, blaze wavelength 250nm
Wavelength Range
185~900nm
Spectral Bandwidth
0.1, 0.2, 0.4, 0.7, 1.4, 2.0nm
Wavelength Accuracy
±0.15nm
±0.2nm
±0.15nm
Wavelength Repeatability
≤0.05nm
≤0.1nm
≤0.05nm
Spectral Bandwidth Deviation
±0.02nm
Lamp Stand
8(Support simultaneous preheating of 1~4 lights)
Photometric Performance
Reading Modes
Transmittance, absorbance, concentration
Photometric Range
0~125%T, -0.1~3.00Abs
Baseline Stability
Drift ±0.002Abs(Steady 30min)
Drift ±0.004Abs(Dynamic 15min)
Drift ±0.003Abs(Steady 30min)
Drift ±0.005Abs(Dynamic 15min)
Drift ±0.002Abs(Steady 30min)
Drift ±0.004Abs(Dynamic 15min)
Background Correction Ability
Deuterium lamp: ≥40 fold(at 1Abs)
Self-reversal: ≥80 fold(at 1Abs)
Deuterium lamp: ≥40 fold(at 1Abs)
Deuterium lamp: ≥40 fold(at 1Abs)
Self-reversal: ≥80 fold(at 1Abs)
Flame Analysis
Characteristic Concentration
Flame method for Cu: ≤0.02μg/mL
Flame method for Cu: ≤0.035μg/mL
Flame method for Cu: ≤0.02μg/mL
Detection Limit
Flame method for Cu: ≤0.004μg/mL
Flame method for Cu: ≤0.006μg/mL
Flame method for Cu: ≤0.004μg/mL
Repeatability
Flame method for Cu: ≤0.5%
Flame method for Cu: ≤0.6%
Flame method for Cu: ≤0.5%
Burner
Titanium burner head
Nebulizer
High-efficiency glass nebulizer
Safety Features
Flame gas & auxiliary gas abnormal pressure protection
Graphite Furnace Analysis
Characteristic Mass
/
Cd ≤0.6pg
Cu ≤20pg
Cd ≤0.5pg
Cu ≤20pg
Detection Limit
/
Cd ≤1.0pg
Cu ≤25pg
Cd ≤0.8pg
Cu ≤25pg
Repeatability(Cd)
/
≤3%
≤2.5%
Graphite Furnace Temperature Range
/
RT~3000°C
Heating Rate
/
Maximum 2000°C/s
Safety Features
/
Alarms for cooling water flow, protective gas pressure, furnace body temperature, power supply temperature, and graphite tube installation
Data Processing
Calculation Method for Concentration
Standard curve method(6 linear and non-linear fitting methods), standard addition method, interpolation method
Number of Repeated Measurements
1~30 times; calculates and provides the average value, standard deviation and relative standard deviation of absorbance and concentration
Standard Accessory
Element lamp(Cu*1), oil-free air compressor, software, U disk
Element lamp(Cu*1, Cd*1), oil-free air compressor, software, U disk, graphite tube*5, pipette*1(5~50μl), pipette tip*1000(200μl)
Optional Accessory
Oxygen-enriched high-temperature flame, hydride generator, audit trailing software, flame autosampler
Oxygen-enriched high-temperature flame, hydride generator, audit trailing software, recirculating chiller, graphite furnace autosampler, flame autosampler
Power Supply
AC 220V, 50/60Hz
External Size(W*D*H)
830*650*560mm
Package Size(W*D*H)
1010*780*830mm
Net Weight
85kg
120kg
125kg
Gross Weight
135kg
183kg
| Model | BK-AA3618, BK-AA3638, BK-AA3668 |
|---|
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