ARACUS “classic” Amino Acid Analyzer

The setup of the ARACUS „classic“ Amino Acid Analyzer is the standard configuration of the analyzer series. The ARACUS „classic“ allows the continuous analysis of 96 samples in a cooled autosampler. The pump allows the simultaneous operation of two fluidic lines (eluent side and reactive side), which guarantees a constant mixing. Eluents and reagent solution are selectively chosen through valves and are ideally mixed to each other. The addition of ninhydrin provides a quantitative analysis statement. A washing routine of the injection valve and syringe pump avoids cross contaminations. The level of the individual reagents can be monitored during the runs and warns the user if the quantity is no longer sufficient.

Technical Specifications of ARACUS “classic” Amino Acid Analyzer

Method

• post column derivatization with Ninhydrin

Autosampler

• 2 racks, each of them with space for 48 vials, sample cooling dosage in 3 different injection modes: full loop (100 μL), partial loop (5 – 50 μL), microliter pickup (1 – 35 μL)

Column

• stainless steel, cation exchange resin reproducibility of retention time < 0.3 % RSD, reproducibility of peak area ~ 1.0 % RSD

Column Oven

• 20 – 100 °C, accuracy 0.1 %

Reactor Temperature

• 20 – 140 °C

Spectroscopic detection

• measuring range: high, low LED photometers (440 nm + 570 nm), 8 years warranty, flow cell: 10 μL volume, 3 years warranty

Detection limit

• < 40 pmol / 20 µL with Ninhydrin

Quantification limit

• > 100 pmol / 20 µL with Ninhydrin

Pump system

• single pump, reproducibility of low rate: 0.1 % RSD at 100 μL/min, max. pressure: 400 bar | flow rate: 0.01 – 10.00 mL/min

Maximum operating pressure

• 120 bar

Ready to use kits

• kits including eluents, reagent and additional dilution buffer, ammonia adsorber and separation columns for 500 – 1000 runs

Columns & Eluents

• Compatible with all columns, operating with all eluents based on different ionic strength (Li, Na, K)

Control software & Data acquisition

• Clarity (21 CFR part 11 compliant) or AminoPeak

Power

• 110 – 230 V

Dimensions

• 1080 mm x 370 mm x 375 mm

Weight

• 60 kg