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Instrument Database:
Mercury Instruments GmbH - Automatic Mercury LabAnalyzer AULA 254
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| Year of introduction |
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| Status |
available |
| Company |
Mercury Instruments GmbH
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| Categories |
Dedicated Analyzer: Mercury
Spectrometer ( Atom. ): AFS
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FEATURES - Fully automated flow analysis system
- Modular Construction
- Proven and reliable detection method:
cold vapor atomic absorption (CVAAS) - Automated Sample Digester Module (ASD)
as an optional accessory - GoldTrap Enhancement Option
for maximum sensitivity of <1 ng/l
The AULA 254 is used for fully automatic determination of mercury traces in a wide variety of samples. The instrument carries out routine analysis: sample after sample following exactly the preselected procedure thus increasing efficiency and productivity of your lab. Applications include: - Water, Waste, Soils and Effluents
- Applicable to EPA Methods: 245.1, 245.7, 1631, 7470 and 7471A
- Medicine (urine, blood, saliva, hair)
- Chemical industry (process monitoring, quality control)
- Geochemistry (geological and mineralogical samples)
- Petrochemistry
- Metallurgy and material testing
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| Specifications |
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Technical Specifications AULA 254 and AULA-Fluorescence (if deviant from AULA 254)
Measuring principle:
Atomic Absorption, cold vapor technique (CVAAS)
Atomic Fluorescence, cold vapor technique (CVAFS)
Analytical wavelength:
253.65 nm
UV source:
Electrodeless low-pressure mercury discharge lamp (EDL)
Stabilization method:
Reference beam technique
Detector:
UV enhanced silicon photo diode
Channel photomultiplier, photon count mode
Optical cell:
Entirely made of fused silica, ca. 230 mm length
Low reflection fluorescence cell
Stripping gas:
Argon, 4~6 l/h, stabilized with electronic mass flow controller (MFC)
Gas-liquid separator:
Bubble-free, non-foaming crossflow principle design
Sample gas dehumidifier:
Thermoelectric principle (desiccant-free, low surface area)
Reagent / sample pump:
3-channel peristaltic pump, stabilized fixed speed (AULA -ASD: two pumps)
Autosampler:
53-place random access, carousel-type
Sample vials:
10 ml, glass; aluminium foil disc covers as accessory
Sample consumption:
ca. 1 ml
Heating coil temperature
(AULA-ASD): ca. 98 °C
Detection limit:
< 30 pg Hg
< 3 pg Hg
Measuring range:
10 ng/L - 50 µg/L (10 ppt – 50 ppb)
0.5 ng/L – 10 µg/L (0.5 ppt – 10 ppb)
Zero drift:
Autozero before each measurement
Measuring duration:
60 – 180 seconds typical
Software:
AULA-WIN,WindowsTM based
Electrical power supply:
115 V / 230 V~; 50 - 60 Hz, consumption ca. 100 W
AULA with ASD module:
150 W
Dimensions:
Autosampler-reaction unit: 345 x 295 x 330 mm (WxHxD)
Photometer:
160 x 450 x 360 mm
Bench space requirements:
ca. 90 x 70 cm (W x D), without PC
Weight:
approx. 14 kg total, without PC
Technical Specifications AULA 254 GoldTrap and AULA Fluorescence GoldTrap
Pre concentration principle:
Amalgamation on gold surface and subsequent release by quick heating
Detection limit:
< 5 pg Hg
< 0.5 pg Hg
Measuring range:
1 ng/L – 5 µg/L (1 ppt – 5 ppb)
0.05 ng/L – 5 µg/L (0.05 ppt – 5 ppb)
Other specifications see AULA standard systems above.
Manufactured according to ISO 9001 quality standard
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