ARACUS “lite” Amino Acid Analyzer

The ARACUS “lite” Amino Acid Analyzer by membraPure GmbH is a compact, cost-effective solution for laboratories requiring precise amino acid analysis without the complexity of full-scale automation. It utilizes high-performance ion-exchange chromatography (IEC) with post-column ninhydrin derivatization, offering the same analytical reliability and accuracy as higher-end models in a more simplified format. Designed for lower throughput environments, the ARACUS “lite” is ideal for teaching laboratories, pilot facilities, and quality control labs with moderate sample loads. It features manual or semi-automated injection, a dual-channel photometric detector (440 nm and 570 nm), and ChromStar ARACUS software for data acquisition and reporting. Despite its compact design, the ARACUS “lite” supports the same standardized amino acid protocols as other ARACUS models, making it a budget-friendly entry point into high-quality amino acid profiling.

Technical Specifications of ARACUS “lite” Amino Acid Analyzer

Method

• post column derivatization with Ninhydrin

Autosampler

ARACUS lite can be upgraded with 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 photometer (570 nm or 500 nm), or dual photometer (440 # 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 absorber and separation columns for 500 – 1000 runs

Columns & Eluents

• Compatible with all High-Speed and High-Resolution 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