GeminAA Series

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Two Technologies. One Powerful Platform.

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Description

GeminAA Series – Two Technologies. One Powerful Platform

The GBC GeminAA Series is designed for modern laboratories that demand speed, precision, flexibility, and reliability. Combining flame and graphite furnace atomization in one compact, fully integrated system, the GeminAA provides the versatility to handle both routine elemental analysis and demanding trace-level applications.

With automated software-controlled switching between flame and graphite furnace in less than 2 seconds, analysts can move seamlessly between analytical techniques without manual reconfiguration. Both atomization technologies can be controlled from a single computer and a unified software platform, making operation faster, simpler, and more efficient.

The GeminAA Ultra takes this integrated concept further with a true double-beam optical system, delivering excellent optical stability and reliable analytical performance. By combining advanced optics, flexible atomization technologies, and intelligent automation, the GeminAA Ultra provides a powerful solution for laboratories requiring high performance without the complexity of multiple instruments.

Features

Advanced Optical System

The GeminAA delivers exceptional optical stability, sensitivity, and reliability through an advanced optical system engineered for demanding elemental analysis.

  • High-resolution 1800 lines/mm diffraction grating provides excellent wavelength resolution while maintaining high optical energy efficiency.
  • Advanced optical stability with a unique suspended optical system minimizes the influence of bench vibration and environmental temperature changes, ensuring consistent analytical performance.
  • Excellent sensitivity and low detection limits enable reliable determination of trace elements, including challenging elements such as arsenic (As) and selenium (Se).
  • Six-lamp turret with automatic lamp alignment and peaking simplifies multi-element analysis and optimizes lamp performance.
  • Deuterium (D₂) background correction effectively compensates for non-specific background absorption across a wide range of applications.
  • Self-absorption background correction provides an additional background correction technique for demanding analytical conditions.

 

Compact Integrated Design

Designed for maximum performance in a compact footprint, the GeminAA integrates the optical system, flame atomizer, graphite furnace, furnace power supply, and control electronics into a single instrument.

  • Integrated Flame & Graphite Furnace configuration provides both routine flame analysis and high-sensitivity furnace analysis in one platform.
  • Compact tandem design saves valuable laboratory space without compromising analytical capability.
  • Optimized hollow cathode lamp power supply helps extend lamp lifetime while maintaining stable lamp performance.
  • The integrated architecture reduces the need for external modules and simplifies instrument installation and operation.

 

Seamless Automated Changeover

Switch effortlessly between flame and graphite furnace analysis with intelligent software-controlled automation.

  • Automated changeover in less than 2 seconds allows rapid transition between flame and furnace modes.
  • No manual reconfiguration required when changing between flame and graphite furnace operation.
  • The automated system minimizes setup time and simplifies multi-technique workflows.
  • Move seamlessly from high-throughput routine analysis to ultra-trace determination on the same instrument.

 

One Instrument. Two Atomization Technologies. Maximum Flexibility.

From routine elemental analysis by flame to demanding trace-level measurements by graphite furnace, the GeminAA combines versatility, sensitivity, stability, and ease of operation in a single compact AAS platform.

Specifications

GeminAA GeminAA Ultra
Wavelength Range 190~900 nm 190~900 nm
Monochromator C-T Grating Monochromator C-T Grating Monochromator
Wavelength Accuracy ±0.1 nm ±0.1 nm
Wavelength Repeatability ≤ 0.05 nm ≤ 0.05 nm
Grating 1800 lines/mm 1800 lines/mm
Blaze Wavelength 250 nm 250 nm
Baseline Stability ≤ 0.003A/30 min (Static);
≤ 0.002A/30 min (Dynamic)		 ≤ 0.003A/30 min (Static);
≤ 0.002A/30 min (Dynamic)
Resolution Better than 0.1 nm Better than 0.1 nm
Spectral Bandwidth Automatic switching between 5 levels:
0.1, 0.2, 0.4, 1.0, 2.0 nm		 Automatic switching between 6 levels:
0.1, 0.2, 0.4, 0.7, 1.0, 2.0 nm
Flame Benchmark Concentration Cu: ≤ 0.02 μg/mL/1% Cu: ≤ 0.02 μg/mL/1%
Flame Method Precision (RSD) ≤ 0.45% ≤ 0.45%
Burner Options 50 mm stainless steel burners
and 100 mm interchangeable all-titanium burners		 50 mm stainless steel burners
and 100 mm interchangeable all-titanium burners
Flame to Hydride Switch Time Less than 1 minute Less than 1 minute
Background Correction Modes Deuterium lamp,
Self-absorption background correction (optional)		 Deuterium lamp,
Self-absorption background correction (optional)
Background Correction Capability ≥ 60 times or more at ~1.0 Abs absorption ≥ 60 times or more at ~1.0 Abs absorption
Graphite Furnace Benchmark Cd: 0.3 × 10-12 g Cd: 0.3 × 10-12 g
Graphite Furnace Detection Limit 0.2 × 10-12 g 0.2 × 10-12 g
Graphite Furnace Precision (RSD) ≤ 1.8% ≤ 1.8%
Furnace Temperature Range Room temperature to 3000 °C Room temperature to 3000 °C
Temperature Control Program Max 20 step temperature program
(3 modes: step, slope, and flat)		 Max 20 step temperature program
(3 modes: step, slope, and flat)
Furnace Heating Modes Max power heating and optical control rapid heating Max power heating and optical control rapid heating
Temperature Rise Rate Optical control: ≥ 3000 °C/s;
Max power: ≥ 2000 °C/s		 Optical control: ≥ 3000 °C/s;
Max power: ≥ 2000 °C/s
Temperature Control Modes Power control mode:
Accuracy ≤ 1%,
Reproducibility ≤ 0.5%),
Optical control mode (Optional)		 Power control mode:
Accuracy ≤ 1%,
Reproducibility ≤ 0.5%),
Optical control mode (Optional)
Automation & Peak Searching Automatic wavelength selection,
Automatic slit switch setting,
Automatic optimization of lamp current/gain within 40 seconds		 Automatic peak searching
(zero order, scanning, lamp/mirror positions,
and energy balance)
+ shared core automated controls
General Automation Automatic flame ignition,
Automatic control of deuterium lamp,
Automatic switching of graphite furnace power supply		 Automatic flame ignition,
Automatic control of deuterium lamp,
Automatic switching of graphite furnace power supply

 

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GeminAA Series

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