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AA 7800 Atomic Absorption Spectrometer
Four atomic absorption spectrometers from AA 7804 to AA 7828 sharing a Czerny-Turner monochromator, a 1800 lines/mm grating and a 190-900 nm range.
Documentation
Datasheets and manuals are issued per model and revision. Ask for the documents that match the configuration you are considering.
See linked documents| Monochromator | Czerny-Turner type, focal lengths at 350 mm |
|---|---|
| Grating | Holographic diffraction with 1800 lines/mm |
| Wavelength Range | 190-900 nm |
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AA 7800 Atomic Absorption Spectrometer range at a glance
Full specifications for every model in the series, side by side. Tell us the sample type and throughput you need and we will point to the closest configuration.
| Parameter | AA 7804 | AA 7808 | AA 7818 | AA 7828 |
|---|---|---|---|---|
| Optical System | Single Beam | Single Beam | Single Beam | Double Beam |
| Wavelength Repeatability | ±0.1nm | ±0.1 nm | ±0.05 nm | ±0.05 nm |
| Wavelength Accuracy | ±0.3 nm | ±0.2 nm | ±0.15 nm | ±0.15 nm |
| Lamp | Automated 4-lamp turret | Automated 8-lamp turret | Automated 8-lamp turret | Automated 8-lamp turret |
| Static Baseline Drift (Cu) | ≤0.004A/30 min | ≤0.003A/30 min | ≤0.002A/30 min | ≤0.002A/30 min |
| Dynamic Baseline Drift (Cu) | ≤0.006A/15 min | ≤0.005A/15 min | ≤0.004A/15 min | ≤0.004A/15 min |
| Background Correction | Deuterium (D2) Background Correction | Deuterium (D2) Background Correction | Deuterium (D2) Background Correction and Self-absorption Background Correction | Deuterium (D2) Background Correction and Self-absorption Background Correction |
| Flame · Characteristic Concentration | ≤0.04µg/mL | ≤0.035µg/mL | ≤0.035µg/mL | ≤0.035µg/mL |
| Flame · Detection Limit (Cu) | ≤0.008µg/mL | ≤0.006µg/mL | ≤0.004µg/mL | ≤0.004µg/mL |
| Flame · Repeatability (Cu) | RSD≤1% | RSD≤0.6% | RSD≤0.5% | RSD≤0.5% |
| Graphite Furnace · Characteristic Amount | Cd≤1pg, Cu≤22pg | Cd≤0.8pg, Cu≤20pg | Cd≤0.8pg, Cu≤20pg | Cd≤0.8pg, Cu≤20pg |
| Graphite Furnace · Detection Limit (Cu) | Cd≤1.5pg, Cu≤20pg | Cd≤1.0pg, Cu≤10pg | Cd≤0.8pg, Cu≤5pg | Cd≤0.8pg, Cu≤5pg |
| Graphite Furnace · Repeatability (Cu) | RSD≤4% | RSD≤3% | RSD≤2.5% | RSD≤2.5% |
Overview
What this instrument measures, and how it fits the range.
The AA 7800 Atomic Absorption Spectrometer covers 4 models, AA 7804 to AA 7828. Wavelength accuracy runs from ±0.15 nm to ±0.3 nm. The comparison table lists every value side by side.
Key points
- Comprehensive and safe intelligent gas control module.
- Excellent full band deuterium lamp background correction technology and high-performance self absorption double background correction.
- Fully automatic instrument control, light source supports high-performance element lamp, and can be completed quickly with one key.
- Original lamp position eight lamp holder 360 degree rotation design.
- Novel atomizer and intelligent elevator.
Full specifications for this model are listed at the top of this page.
Accessories
Confirm these items before the final quotation. Accessories are listed only where the manufacturer offers them.
Standard accessories
Ask for an itemized quotation that separates standard items from options.
Optional accessories
- Autosampler
Specifications can depend on the selected configuration. Confirm the current datasheet, accessories and software version before purchase.
Common selection questions
Confirm requirements with our team before the final order.
What is the difference between the AA 7800 series and the AA 7804?
AA 7804 is the dedicated flame instrument: single beam, deuterium background correction and an automated four-lamp turret. The AA 7800 designation covers the wider series up to AA 7828, which keeps the same Czerny-Turner monochromator and 1800 lines/mm grating but adds graphite furnace and hydride-generation capability.
Should I choose flame, graphite furnace or hydride generation?
Flame suits mg/L to sub-mg/L work such as drinking water, soil extracts and alloys. Graphite furnace reaches the µg/L range and below for trace metals in food and environmental samples. Hydride generation is for arsenic, selenium and mercury, which form volatile hydrides. The series supports all three measurement modes.
What gases and site conditions does it need?
Flame operation uses acetylene with air assist; acetylene is controlled in 12 levels and air assist in 4 levels, with PC-controlled ignition. Gas is cut off automatically on low pressure, power failure or flame-out. Site the instrument at 10–35 °C and ≤85% relative humidity, and allow for the 850 × 650 × 550 mm footprint.
Applications for this instrument
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Water & Environmental Analysis
Water quality testing and environmental monitoring.
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