The 7800 Atomic Absorption Spectrophotometer is a fully automatic analyser. It can be flexibly equipped with an 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.
7800 Flame Atomic Absorption Spectrophotometer
Description
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.
Flame System
| Item | 5800 | 7800 |
| Wavelength 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 | 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 | Spectral bandwidth =0.2nm can separate Mn two lines (279.5nm and 279.8nm, valley/peak energy ratio <20% |
| Spectral Bandwidth | D2 (background signal =1Abs, background correction capability | 0.1nm, 0.2nm, 0.4nm, 0.7nm, 1.0nm, 2.0nm |
| Static Baseline Drift | Integrating structure of suspended internal and external | ≤0.002ABS/30min (Cu) |
| Background Calibration Technology | 4-lamp turret (4 lamps can be
preheated simultaneously) |
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 Calibration Technology | 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 |
