CETAC Aridus - Model II - Desolvating Nebulizer System for ICP-MS Brochure

ARIDUS II™Desolvating Nebulizer System for ICP-MSThe CETAC Aridus II™ Desolvating Nebulizer System is a specialized sample introduction accessory for Inductively Coupled Plasma Mass Spectrometry (ICP-MS). The Aridus II™ can enhance analyte sensitivity up to 10 times and can greatly reduce solvent-based interferences such as oxides and hydrides.NEBULIZERSPlace your order: CETAC.COM || SALES@CETAC.COM || PHONE 800.369.2822 || FAX 402.733.5292INTRODUCTION The Aridus II™ couples the Aspire™ low-flow PFA nebulizer and a heated PFA spray chamber with a PTFE membrane desolvator unit. This combination provides enhanced analyte sensitivity while reducing solvent based interferences, such as oxides and hydrides. The Aridus II™ is particularly advantageous for small volume and highly corrosive samples (e.g. HF) such as those generated in the earth sciences and the semiconductor industry.The Aridus II™ can be easily inter faced with all current t ypes of ICP-MS instruments, including quadrupole, high-resolution (HR), multi-collector (MC) and time of flight (TOF) systems. The sample path (nebulizer, spray chamber and membrane), are all made of inert fluoropolymers which are resistant to all acids including hydrofluoric acid (HF). Sample-solvent vapors pass through the inert membrane to vent, providing very low oxides (%CeO/Ce is usually 0.05% or less).KEY FEATURES • Sensitivity enhanced by a factor of 4 to 10 times• Low volume sample uptake rates of 50, 100 or 200 µL/min • Unique, tunable Aspire™ PFA Nebulizer with replaceable capillary• Heated PFA spray chamber for high sample transport efficiency• Both nebulizer and spray chamber are behind a secured door to alleviate electrostatic effects• Patented PTFE membrane desolvator for lowest oxide and hydride levels• Built-in gas flow controllers for both argon sweep gas and N2 addition gas• Built-in spray chamber drain pump with acid-resistant PVDF parts• Dedicated, adjustable temperature controllers for both spray chamber and membrane desolvator• Modular membrane desolvator for easy cleaning and/or replacementARIDUS II Place your order: CETAC.COM || SALES@CETAC.COM || PHONE 800.369.2822 || FAX 402.733.5292Aridus II™ Specifications:Nebulizer: CETAC Aspire™ PFA50,100 or 200 µL/min uptakePTFE Desolvating Membrane: Argon Sweep Gas: 0 - 8.0 L/min Nitrogen Gas: 0 – 50 mL/min Membrane Oven Temperature: 160 °CSpray Chamber: PFA with pumped drain Temperature: 110 °CVoltage: 120 VAC ± 10%, 50/60 Hz, 6A 220 VAC ± 10%, 50/60 Hz, 3ADimensions: Height: 24.8 cm (9¾")Width: 33.6 cm (13¼")Depth: 55.9 cm (22")Weight: 10.5 kg (23.1 lbs.)Warranty: 12 month limitedAridus II™ Membrane Desolvator Module PRINCIPLE OF OPERATION Sample solution is introduced to the Aridus II™ by a self-aspirating Aspire™ PFA Nebulizer. The nebulizer aerosol is sprayed into a heated (up to 110 °C) PFA spray chamber to maintain the sample in a vapor phase. The sample vapor then enters a heated PTFE membrane desolvator module. A countercurrent flow of argon sweep gas is added to remove solvent vapors that permeate the porous wall of the membrane. Nonvolatile sample components do not pass through the membrane wall and continue to the ICP-MS instrument.Aridus IITM SchematicMEMBRANE DESOLVATOR MODULEThe Aridus II™ is equipped with a modular membrane desolvator (shown below). The module is an integral part of the Aridus II™ chassis and can be quickly removed or replaced. Once removed from the Aridus II™, the membrane desolvator can be conveniently cleaned. A specialized rinse kit is provided to introduce an appropriate cleaning solution such as dilute nitric acid. CETAC.COM || SALES@CETAC.COM || PHONE 402.733-2829 || TOLL-FREE 800.369.2822 || FAX 402.733.5292NEBULIZERSQUICKWASH ACCESSORYFast Washout Accessory for the Aridus II™The CETAC QuickWash Accessory for the Aridus II™ rapidly washes the inner wall of the PFA spray chamber, providing greatly reduced washout times for higher concentration analytes. The QuickWash can be operated in a manual or an automated mode, the latter in conjunction with the ASX-112FR Autosampler.The CETAC Aridus II™ Desolvating Nebulizer System is a popular accessory for signal enhancement with ICP-MS. The introduction of higher (> 100 µg/L) analyte concentrations is common with multicollector ICP-MS, a specialized instrument used for isotope ratio measurements.While the Aridus II™ can greatly improve ICP-MS signal, the prolonged introduction of higher concentration samples can cause analyte and matrix buildup on the inner wall of the heated PFA spray chamber. This buildup can cause signal spikes and longer sample washout.The CETAC QuickWash Accessory is used during the rinse cycle of the Aridus II™ to rapidly wash the inside of the spray chamber, greatly reducing washout times. The QuickWash controls a second pneumatic nebulizer that is positioned in the side-front of the spray chamber and generates a tangential aerosol to efficiently rinse the chamber.The QuickWash uses a pumped rinse liquid flow (1–2 mL/min using the ICP-MS peristaltic pump) and a high argon gas flow (2 L/min, teed from the Aridus II™ sweep gas supply) for the rinse aerosol generation. The tilted position of the spray chamber prevents liquid from reaching the Aridus II™ membrane desolvator and the on-board peristaltic pump will rapidly remove any liquid in the chamber. Wash times are preset in increments of 10 seconds up to 160 seconds, with a typical time range of 30 to 60 seconds. The QuickWash can be used manually or can be set to start automatically when used with the CETAC ASX-112FR Autosampler. The QuickWash control box can be conveniently mounted on the left or right side of the Aridus II™, depending on the host ICP-MS configuration.Technical SpecificationsPower Requirements: 100 –240 V, 47–63 Hz, 3.3AVoltage: 24 VDC Power Supply Argon Gas Flow: 2 L/min (factory setting)Dimensions:Height: 14.3 cm (5.6")Width: 6.7 cm (2.6")Depth: 27.6 cm (10.9")Weight: 1.07 kg (2.35 lbs)Warranty: 12 month limitedQuickWash Gas-Liquid Line to Spray ChamberCompactSpace Saving Design: Modular design allows place-ment on top of the Aridus II™ cover for maximum con-servation of valuable laboratory bench space. This ar-rangement also minimizes sample path length using the Aspire™ PFA nebulizer with integrated sample probe.High PurityDual Flowing Rinse: The ASX-112FR utilizes dual, continuous flow rinse stations, operable in gas-displacement or peristaltic pump mode, minimizing sample contamination and carryover. Contamination Resistant: All sample vials, racks, and trays are constructed of metal-free, acid-resistant, high-purity polymeric materials. In addition, the ASX-112FR has an integrated transparent cover to minimize sample contamination. FlexibleAdaptable: The ASX-112FR accommodates rack config-urations allowing operation with sample volumes as low as 200 µL, and up to 15 mL.ConvenientEasy Access: Sample and racks may be easily accessed (during operation, if desired) through a hinged door, or by removing the entire anti-contamination cover.CETAC.COM || SALES@CETAC.COM || PHONE 402.733-2829 || TOLL-FREE 800.369.2822 || FAX 402.733.5292ASX-112FR Micro AutosamplerThe ASX-112FR (Flowing Rinse) Micro Autosampler is designed specifically for use with the Aridus II™. This compact autosampler features a protective cover and dual fl owing rinse stations to ensure sample integrity from the fi rst to the last sample. The ASX-112FR is ideal for handling small volumen, corrosive liquid samples in a cleanroom environment. Technical Specifications:Standards Tray Size: 5 positions (20 mL vial), 9 positions (4 mL vial) Sample Rack Configurations: CETAC racks – 24, 48, and 96 positions; BelArt half racks – 30 and 42 positions Computer/Hardware Interfaces: USB, RS-232, IEEE-488 (optional)Power Requirements: 100 - 240 VAC ± 10%, 50/60 HzDimensions:Height: 42.9 cm (16.9")Width: 33.4 cm (13.1")Depth: 50.8 cm (20")Weight: 14.1 kg (31.0 lbs) with transparent coverWarranty: 2 year limited Additional Information: See page 12 for additional information and spare parts.