Name: AULA-254 Gold
SKU: 404
Availability: InStock

Fully automated flow analysis system
Compact modular construction
Proven and reliable detection method: cold vapor atomic absorption (CVAAS)
Integrated GoldTrap for a maximum of sensitivity of <1 ng/l (can be turned off or on)
Wide linear measuring range

Automatic purging after exceedance of mercury concentration
Minimized memory effect
Easy to operate with AULAWIN software
Automated Sample Digester Module (ASD) for liquid samples as an optional accessory

Typical applications include analysis of aqueous samples that have to be digested oxidatively before reduction: surface water, groundwater, effluent, process water.
Environmental monitoring: water, soils, sludge …

Technical Specifications
Measuring principle	Amalgamation (MI GoldTrap), cold vapor atomic absorption (CVAAS) at 253.7 nm
UV-Source	Electrodeless low pressure mercury lamp (EDL)
Stabilization method	Reference beam method
Optical cell	Fused silica (Suprasil), l: approx. 230mm, heated approx. 45°
Measuring range	10 ng/l to 50 µg/l (GoldTrap deactivated); 1 ng/l to 5 µg/l (GoldTrap activated)
Detection limit:	< 50 pg Hg (GoldTrap deactivated); < 5 pg Hg (GoldTrap activated)
Carrier gas	argon (optional nitrogen), 4-6 l/h; stabilized with electronic mass flow controller
Sample vials	10 ml, glass with aluminium foil disk covers
Sample consumption	approx. 1 ml
Heating coil temperature	approx. 98 °C (AULA-ASD only)
Measuring duration	typ. 60 – 180 seconds

Automatic laboratory mercury analyzer

AULA-254 Gold