7800 Atomic Absorption Spectrophotometer - Instrumentation

The 7800 Atomic Absorption Spectrophotometer is fully controlled via PC and can be equipped with optional components, including a graphite furnace, auto-sampler, and hydride generator, allowing for versatile application. Featuring a unique optical and mechanical design, a safe and user-friendly flame system, and optional background correction technologies, this instrument supports the pursuit of automated and precise analytical results. Additionally, the workstation offers convenient functions to enhance ease of use and efficiency in testing.

Features:

Excellent total reflection optical system ensures excellent signal-to-noise ratio of the instrument.
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.
Simple, professional, automatic and fully operated RG WIN AAS workstation software under MS window system.

Description

Speciﬁcations

Models	AA 7804	AA 7808	AA 7818	AA 7828
Models	Single Beam	Single Beam	Single Beam	Double Beam
Optical System	Single Beam	Single Beam	Single Beam	Double Beam
Monochromator	Czerny-Turner type, focal lengths at 350mm	Czerny-Turner type, focal lengths at 350mm	Czerny-Turner type, focal lengths at 350mm	Czerny-Turner type, focal lengths at 350mm
Grating	Holographic diffraction with 1800 lines/mm	Holographic diffraction with 1800 lines/mm	Holographic diffraction with 1800 lines/mm	Holographic diffraction with 1800 lines/mm
Wavelength Range	190-900 nm	190-900 nm	190-900 nm	190-900 nm
Slits	Automated slit selection 0.1, 0.2, 0.4, 0.7, 1.4, 2.0 nm	Automated slit selection 0.1, 0.2, 0.4, 0.7, 1.4, 2.0 nm	Automated slit selection 0.1, 0.2, 0.4, 0.7, 1.4, 2.0 nm	Automated slit selection 0.1, 0.2, 0.4, 0.7, 1.4, 2.0 nm
Wavelength Repeatability	±0.1 nm	±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 4-lamp turret	Automated 8-lamp turret	Automated 8-lamp turret
Reading Mode	T, A, C	T, A, C	T, A, C	T, A, C
Photometric Range	0-125%, -0.1-3.00A	0-125%, -0.1-3.00A	0-125%, -0.1-3.00A	0-125%, -0.1-3.00A
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	Deuterium (D2) Background Correction and Self-absorption Background Correction

Models	AA 7804	AA 7808	AA 7818	AA 7828
Models	Single Beam	Single Beam	Single Beam	Double Beam
Characteristic	≤0.04μg/ml	≤0.03μg/ml	≤0.02μg/ml	≤0.02μg/ml
Detection Limit (Cu)	≤0.008μg/ml	≤0.006μg/ml	≤0.004μg/ml	≤0.004μg/ml
Repeatability (Cu)	RSD≤1%	RSD≤0.6%	RSD≤0.5%	RSD≤0.5%
Acetylene Flow Control	Auto 12-Level	Auto 4-Level	Auto 4-Level	Auto 4-Level
Air Assist Control	Auto 4-Level	Auto 4-Level	Auto 4-Level	Auto 4-Level
Ignition Method	PC control	PC control	PC control	PC control
Detector	Wide range UV sensitive photomultiplier tube	Wide range UV sensitive photomultiplier tube	Wide range UV sensitive photomultiplier tube	Wide range UV sensitive photomultiplier tube
Burner Head	Titanium 100mm burner for air/acetylene operation	Titanium 100mm burner for air/acetylene operation	Titanium 100mm burner for air/acetylene operation	Titanium 100mm burner for air/acetylene operation
Nebulizer	High efficiency glass nebulizer	High efficiency glass nebulizer	High efficiency glass nebulizer	High efficiency glass nebulizer
Spray Chamber	Corrosion resistant material spray chamber	Corrosion resistant material spray chamber	Corrosion resistant material spray chamber	Corrosion resistant material spray chamber
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	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
Characteristic Amount	Cd≤0.5pg, Cu≤20pg	Cd≤0.5pg, Cu≤20pg	Cd≤0.5pg, Cu≤20pg	Cd≤0.5pg, Cu≤20pg
Detection Limit (Cu)	Cd≤1.5pg, Cu≤25pg	Cd≤1.0pg, Cu≤25pg	Cd≤0.8pg, Cu≤25pg	Cd≤0.8pg, Cu≤25pg
Repeatability (Cu)	RSD≤4%	RSD≤3%	RSD≤2.5%	RSD≤2.5%
Heating Range of Graphite Furnace	Room temperature - 3000℃	Room temperature - 3000℃	Room temperature - 3000℃	Room temperature - 3000℃
High Power Heating Range	1500-3000℃	1500-3000℃	1500-3000℃	1500-3000℃
Slope and Holding Time	1-255s	1-255s	1-255s	1-255s
Atomization Heating Mode	Light-controlled heating, Time-controlled heating, General heating	Light-controlled heating, Time-controlled heating, General heating	Light-controlled heating, Time-controlled heating, General heating	Light-controlled heating, Time-controlled heating, General heating
Protective Gas Flow Outside Pipe	1 L/min	1 L/min	1 L/min	1 L/min
Protective Gas Flow Inside Pipe	4-speed adjustable (0, 50, 200, 250 ml/min flow)	4-speed adjustable (0, 50, 200, 250 ml/min flow)	4-speed adjustable (0, 50, 200, 250 ml/min flow)	4-speed adjustable (0, 50, 200, 250 ml/min flow)
Safety Protection	Cooling water flow, Protective gas pressure, Furnace body temperature, Power supply temperature, Graphite furnace installation alarm	Cooling water flow, Protective gas pressure, Furnace body temperature, Power supply temperature, Graphite furnace installation alarm	Cooling water flow, Protective gas pressure, Furnace body temperature, Power supply temperature, Graphite furnace installation alarm	Cooling water flow, Protective gas pressure, Furnace body temperature, Power supply temperature, Graphite furnace installation alarm
Auto Sampler	Optional	Optional	Optional	Optional
Measuring Method	Flame method, Graphite furnace method, Hydride generation-Atomic absorption method, Flame emission method	Flame method, Graphite furnace method, Hydride generation-Atomic absorption method, Flame emission method	Flame method, Graphite furnace method, Hydride generation-Atomic absorption method, Flame emission method	Flame method, Graphite furnace method, Hydride generation-Atomic absorption method, Flame emission method
Concentration Calculation Method	Standard curve method (6 linear/non-linear fitting methods), Standard addition method, Interpolation method	Standard curve method (6 linear/non-linear fitting methods), Standard addition method, Interpolation method	Standard curve method (6 linear/non-linear fitting methods), Standard addition method, Interpolation method	Standard curve method (6 linear/non-linear fitting methods), Standard addition method, Interpolation method
Repeat Measurement Times	1-30 times, Calculate and give the average value of absorbance/concentration, standard deviation and relative standard deviation	1-30 times, Calculate and give the average value of absorbance/concentration, standard deviation and relative standard deviation	1-30 times, Calculate and give the average value of absorbance/concentration, standard deviation and relative standard deviation	1-30 times, Calculate and give the average value of absorbance/concentration, standard deviation and relative standard deviation
Report Printing	Parameter printing, Data result printing	Parameter printing, Data result printing	Parameter printing, Data result printing	Parameter printing, Data result printing
Dimensions/Weight	850 x 650 x 550 mm / 95kg	850 x 650 x 550 mm / 95kg	850 x 650 x 550 mm / 95kg	850 x 650 x 550 mm / 95kg
Ambient Temp.	10 ~ 35 ℃	10 ~ 35 ℃	10 ~ 35 ℃	10 ~ 35 ℃
Ambient Humidity	≤ 85 %	≤ 85 %	≤ 85 %	≤ 85 %
Power	110/220V, 50/60Hz	110/220V, 50/60Hz	110/220V, 50/60Hz	110/220V, 50/60Hz