CETAC Aridus II Operator's Manual
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CETAC Aridus II Operator's Manual

Desolvating nebulizer system
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CETAC Aridus II™ Desolvating Nebulizer
System
Operator's Manual
Manual Part Number 480144 rev2

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Summary of Contents for CETAC Aridus II

  • Page 1 CETAC Aridus II™ Desolvating Nebulizer System Operator’s Manual Manual Part Number 480144 rev2...
  • Page 2 (800) 369-2822 (USA only) Phone (402) 733-2829 (402) 733-1932 E-mail custserv@cetac.com CETAC Technologies strives to provide the REVISIONS scientific community with an unparalleled combination of effective technology and continuing value. Modular upgrades for existing instruments will continue to be a prime consideration as designs progress.

  • Page 3: Table Of Contents

    System Optimization ......................24 Aridus II Optimization Procedure ................24 ™ Establishing Optimal Operating Conditions ............27 Using the Aridus II™ Desolvating Nebulizer System ....... 27 Replacing Aridus II Components ................28 ™ Establishing the Lab Environment ................27 Sample Transfer Line: Teflon -Lined PVC Tubing ..........
  • Page 4 Excessive nitrogen-containing polyatomic ion interferences...... 46 Plasma Problems ......................... 46 Nebulizer self-aspiration stops .................. 46 Returning the Product to CETAC for Service ............47 Plasma flickers excessively or is unstable............. 46 Shipping the Product ..................... 47 Product Warranty Statement ..................47 Returned Product Procedures ...................

  • Page 5: Introduction

    Solvent vapor passes through the membrane and is removed by an exterior flow of Ar gas (sweep gas). Analyte continues through the middle of the membrane tube to the ICP-MS instrument. An external view of the Aridus II™ Nebulizer System is shown in Figure 1-1.

  • Page 6: About This Book

     CETAC Aridus II™ Desolvating Nebulizer System CHEMICAL INJURY HAZARD WARNING The Aridus II™ Desolvating Nebulizer System is intended for use only by qualified operators who have been trained in safe laboratory practices. Make sure you know the hazards associated with all of the chemicals you are using, and take the appropriate precautions.

  • Page 7: Aridus Ii™ Specifications

     Rinse kit: Contains membrane rinse accessories and a tubing kit that connects to the necessary ports.  Spare fuse kit: Contains replacement fuses for the Aridus II™.  Gas-line tubing kit: Contains all the necessary tubing to interface the argon sweep gas and nitrogen addition gas to the Aridus II™.

  • Page 8: Where To Go For More Information

    In addition to this manual, you can refer to the following resources:  New versions of this manual may be available under “Service and Support” on CETAC’s Web site: www.cetac.com  CETAC Technologies Customer Service and Support: Phone: 1 (800) 369-2822 (USA only) 1 (402) 733-2829 Fax: 1 (402) 733-1932 E-mail: custserv@cetac.com...

  • Page 9: Choosing A Location

    Choosing a location for the Aridus II involves evaluating the laboratory ™ environment for the availability of space and power. For the Aridus II ™ function optimally, the location you select must meet specific requirements associated with each of these items. The following sections discuss space and power requirements.

  • Page 10: Icp-Ms Requirements

    Do not apply power until ready to operate the system. ICP-MS Requirements To achieve optimum performance with the Aridus II , the ICP-MS system must ™ meet factory specifications from your vendor and be in good operating condition.

  • Page 11: Unpacking The Aridus Ii

    EQUIPMENT DAMAGE FROM CONDENSATION CAUTION If condensation forms on or inside the Aridus II™, allow it to dry thoroughly before connecting it to a power source and operating it. Failure to do so may cause equipment damage.
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  • Page 13: Establishing External Connections

    Aridus II before proceeding with installation. Establishing External Connections The first step in the installation process involves connecting the Aridus II ™ the power source and to the ICP-MS instrument. The following sections explain how to establish these connections.
  • Page 14 Aridus II™ Operator’s Manual attachment to the threaded SAMPLE OUT port. The threaded nut should only be finger-tightened onto the SAMPLE OUT port. Make certain that the Teflon® lining in the sample out tubing is not blocking the CAUTION aerosol path to the ICP-MS torch. This can result in instability and lack of analyte Attach the other end, containing the torch adapter, to the signal from the ICP-MS instrument.
  • Page 15 Aridus II™ Operator’s Manual Chapter 3: Installing the Aridus II™ Figure 3-2. Inner Glass Tubes – Trap Bottle. Screw the ½" adaptor end of the insulated Teflon® line to the corresponding ½" threaded PFA fitting for the SWEEP GAS OUT port. Attach the ½" adaptor of the other end of this line to the corresponding ½"...
  • Page 16 Figure 3-3b. Attachment of Sweep Gas Out Exhaust Line to Trap Bottle. A minimum argon and nitrogen supply of 350 kPa (50 psi, 3.5 bar) is required to operate the Aridus II . The argon may be teed in from the ICP-MS ™...

  • Page 17: Connecting The Aridus Ii Drain Tubing

    Aridus II™ Operator’s Manual Chapter 3: Installing the Aridus II™ Connecting the Aridus II Drain Tubing There is one liquid drain line to install on the back of the Aridus II unit. To set ™ ™ up this drain line: Obtain the peri-pump tubing kit from the Aridus II completion kit.

  • Page 18: Connecting The Asx-112Fr Autosampler To The Host Computer

    ASX-112FR. (Refer to the ASX-112FR Autosampler Operator’s Manual for further instructions.) Connecting the Nebulizer to the Aridus II ™ Loosen the top thumb screw on the front of the Aridus II and open the front ™ door by pulling downward. See Figure 3-5.
  • Page 19 Aridus II™ Operator’s Manual Chapter 3: Installing the Aridus II™ Figure 3-6. Attachment of Spray Chamber Tubing to Drain Port. Insert the nebulizer gas line (4mm O.D. tubing ) into the press-lock fitting labelled NEB-GAS. See Figure 3-7. Figure 3-7. Attachment of 4mm O.D. Tubing to NEB GAS Port.
  • Page 20 Ensure that the nebulizer is fully inserted through both o-rings. Figure 3-9. Insertion of C-Flow PFA Nebulizer into Spray Chamber. Carefully set the C-Flow uptake line through the sample inlet notch in the upper left front of the Aridus II door. See Figure 3-10. Attach the sample probe ™...

  • Page 21: Quickwash Fast Washout Accessory

    Manual for further instructions.) QuickWash Fast Washout Accessory The Aridus II may also be equipped with the QuickWash fast washout accessory. The QuickWash accessory enables in-place rinsing of the PFA spray chamber after the introduction of higher concentration samples. The QuickWash may be operated in a manual or automated mode via the ASX- 112FR autosampler.
  • Page 22 Aridus II™ Operator’s Manual Figure 3-11. Aridus II with ASX-112FR Autosampler and QuickWash Accessory.

  • Page 23: Initial Operating Procedure

    Once installation of the Aridus II is complete, it is important to verify that you ™ have installed the system correctly. Attempting to use the Aridus II before ™ ensuring that it is installed correctly may result in damage to the system.

  • Page 24: Icp-Ms Operation

    ICP-MS Operation Set the SWEEP GAS flow to 0.5 L/min and the NITROGEN gas flow to zero by adjusting the gas flow control knobs located on the front of the Aridus II ™ NOTE: It may be possible to ignite the plasma while the SWEEP GAS and NITROGEN GAS are flowing.
  • Page 25 (approx. 10 mL/min) is added into the sample line leading from the membrane desolvator to the ICP torch. This small amount of oxygen helps prevent carbon buildup on the ICP-MS sampling cones. The CETAC BGX-100 Blend Gas Accessory can be used to simplify the gas addition. Please contact CETAC Technologies at 800-369-2822, 402-733-2829, or custserve@cetac.com...
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  • Page 27: Establishing Optimal Operating Conditions

    50-86°F (10-30°C), the humidity is 20-70% • non-condensing; and the unit is not exposed to excessive flammable or corrosive materials. Avoid rough handling of the Aridus II™. If possible, do not expose the system to vibration or shock. •...

  • Page 28: Replacing Aridus Ii

    Low humidity • environments, especially when combined with static-generating materials require maximum care. ™ Discharge static buildup and ground the Aridus II cabinet before WARNING Avoid using the Aridus II if strong electromagnetic interference or radio performing any maintenance.

  • Page 29: Shutdown Procedure

    Aridus II™ Operator’s Manual Chapter 5: Using the Aridus II™ Desolvating Nebulizer System The Aridus II System is now ready to use. ™ Shutdown Procedure Aqueous Analysis: Aspirate dilute nitric acid (2%v/v) for approximately 5-10 minutes to provide a thorough spray chamber rinse. Follow the acid-rinse by aspirating deionized water for approximately 3-5 minutes.

  • Page 30: Switching From Organic Samples To Aqueous Samples And Aqueous Samples To Organic Samples

    NOTE: The temperature controllers are set to allow adjustment over a certain range. You must contact CETAC Customer Support if you desire an operating temperature outside the specified range. Unauthorized changes in the temperature settings will immediately terminate the warranty.

  • Page 31: Cleaning The Aridus Ii

    WARNING performing any maintenance on the system. Cleaning the Aridus II Cleaning the Aridus II is an important task. Failure to clean the Aridus II ™ ™ ™ cause increased wear and reduce the system’s operating life. It is especially important to clean up any liquid spills, particularly of any acidic solutions.

  • Page 32: Daily Internal Cleaning

    BURN HAZARD WARNING To remove the spray chamber, first turn off power to the Aridus II™ and allow Allow the spray chamber to cool to room temperature before disassembly. the unit to cool for 15-30 minutes. Then remove the C-Flow PFA nebulizer and detach the spray chamber drain line.

  • Page 33: Main Fuse Replacement

    Aridus II™ Operator’s Manual Chapter 6: Maintaining the Aridus II™ Figure 6-1. Removal of the PFA Spray Chamber. The spray chamber may be disassembled by unscrewing the end. See Figure 6- 2. The spray chamber should be allowed to cool before disassembly.

  • Page 34: Spray Chamber And Desolvator Fuse Replacement

    Replace the power cord and turn the AC power switch on. If the new fuse blows, do not attempt to operate the unit. Contact your authorized CETAC Service Representative or CETAC Technologies for assistance. Rinse Procedure for the Membrane Desolvator...

  • Page 35: Removal Of The Membrane Desolvator Modular Assembly

    Power should be turned off at this time. If left on, the following procedure could CAUTION cause permanent damage to the internal gas flow controllers. Turn off all gas supplies to the Aridus II ™ Disconnect the SWEEP GAS OUT tubing from the ½ inch threaded fitting on the back of the Aridus II ™...
  • Page 36 If in use, power off and disconnect the ASX–112FR autosampler. Remove the ASX-112FR from the top of the Aridus II ™ Remove all screws from the lid of the Aridus II . There are a total of 12 screws ™...
  • Page 37 Aridus II™ Operator’s Manual Chapter 6: Maintaining the Aridus II™ Figure 6-5. Detachment of Membrane Desolvator from Spray Chamber Oven. Completely loosen the three spring-loaded screws which secure the membrane desolvator assembly to the Aridus II cabinet. See Figure 6-6.
  • Page 38 Aridus II™ Operator’s Manual Figure 6-7. Removal of ARGON and NITROGEN gas lines from solenoid valves. Detach the connection to the rear-mounted cooling fan. See Figure 6-8. Figure 6-8. Detachment of Cooling Fan Connection. Detach the multi-wire connector to the membrane desolvator. See Figure 6-9.

  • Page 39: Cleaning The Membrane Desolvator

    Figure 6-9. Detachment of Multi-Wire Connector to Membrane Desolvator. Cleaning the Membrane Desolvator The following procedure is recommended to clean the membrane desolvator. Locate the membrane rinse kit in the Aridus II completion kit. Using the ™ adaptors and tubing provided in the rinse kit, connect the two ends from the “Y”...
  • Page 40 Aridus II™ Operator’s Manual Remove the ARGON and NITROGEN gas lines from the lower block of the membrane desolvator. Use the provided length of Teflon -lined PVC tubing line ® labeled Ar/N to connect the two gas ports. See Figure 6-11.
  • Page 41 Aridus II . Turn the power on and set the SWEEP GAS control ™ to a setting of 3.0L/min. Let the SWEEP GAS run through the Aridus II for at ™ least 30 minutes to remove most of the remaining rinse solution.
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  • Page 43: Temperature Controller Problems

    ICP-MS instrument, sample preparation procedure, or the Aridus II™. This chapter explains how to troubleshoot Aridus II™ problems. If you cannot solve a problem using the steps given in this chapter, contact CETAC Technologies Customer Service and Support.

  • Page 44: Gas Flow Controller Problems

    Temperature controller reads room temperature. • Thermal safety switch tripped due to excessive temperature. Heat Temperature controller stops illuminating. controller or solid-state relay is defective. Contact CETAC Customer • Service. Gas Flow Controller Problems It is normal for the sweep gas controller to read a value greater than zero Sweep gas controller does not read zero.

  • Page 45: Sample Flow Rate Problems

    Aridus II™ Operator’s Manual Chapter 7: Troubleshooting the Aridus II™ chamber. Turn off power to the Aridus II and allow the spray chamber to ™ cool (15-30 minutes). Then unscrew the nebulizer port fitting and replace with a new nebulizer port fitting (which has o-rings in place). The port fitting is CETAC part number SP8015.

  • Page 46: High Elemental Oxide Levels

    CETAC Technologies for a replacement nebulizer. • Plasma Problems The most likely cause of plasma instability is a leak in the Aridus II Plasma flickers excessively or is unstable. ™ nebulizer / membrane system. Check all gas line connections. Make sure •...

  • Page 47: Returning The Product To Cetac For Service

    Aridus II™ Operator’s Manual Chapter 7: Troubleshooting the Aridus II™ Returning the Product to CETAC for Service Refer to the following information if you need to return the product to CETAC Technologies for service. Follow these guidelines when shipping the product: Shipping the Product ...

  • Page 48: Returned Product Procedures

    CETAC reserves the right to change or improve the design of any unit without assuming any obligation to modify any unit previously manufactured.
  • Page 49 Aridus II™ Operator’s Manual Chapter 7: Troubleshooting the Aridus II™ freight return, the product will be shipped collect. Warranty repairs do not extend the original warranty period. If an out of warranty defect exists, the buyer shall be notified of the repair cost.
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  • Page 51: Characteristics

    Aridus II™ Operator’s Manual Chapter 8: Safety and Regulatory Information 8 Safety and Regulatory Information Review this product and related documentation to familiarize with safety markings and instructions before you operate the instrument. Characteristics Environmental Characteristics Operating Temperature +10° C to +30° C (+50° F to +85° F) Non-Operating Temperature +0°...

  • Page 52: Electrical Characteristics

    Aridus II™ Operator’s Manual Electrical Characteristics Power requirements Power Supply Input AC Voltage, Frequency, and Current – Switch 120 VAC ±10%, 50/60 Hz, 6 A Selected 220 VAC ±10%, 50/60 Hz, 3 A • • Installation Category: CAT II (Line voltage in appliance and...

  • Page 53: Safety Notices

    Safety Notices INJURY HAZARD WARNING If the equipment is used in a manner not specified by CETAC Technologies, the protection provided the equipment may be impaired. Repair or service that this not covered in this manual should only be performed by qualified personnel.

  • Page 54: Cleaning Instructions

    To reduce the risk of fire hazard and electrical shock, do not expose the unit to rain or humidity. To reduce the risk of electrical shock, do not open the cabinet. All maintenance is to be performed by an Authorized CETAC Service Provider.

  • Page 55: Explanation Of Caution And Warning Notices

    Aridus II™ Operator’s Manual Chapter 8: Safety and Regulatory Information Explanation of Caution and Warning Notices Warning symbol marked on equipment. This symbol means “Attention! Refer to the manual.” Refer-to-manual symbol marked on equipment. This symbol means “Read and understand the manual before operating or servicing this equipment.”...

  • Page 56: Avertissements En Français

    Aridus II™ Operator’s Manual Avertissements en Français This section provides French translations of notices which may appear on the instrument or on other instruments used as part of the measurement system. AVERTISSEMENT SURFACES CHAUDES, LAISSER LE COUVERCLE HERMÉTIQUEMENT FERMÉ. POUR ACCÉDER, METTRE LA TEMPÉRATURE DU FOUR À ZÉRO, OUVRIR LE COUVERCLE ET LAISSER REFROIDIR 5 MINUTES AVANT DE TOUCHER LA VERRERIE OU TOUTE SURFACE MÉTALLIQUE INTÉRIEURE.
  • Page 57 Aridus II™ Operator’s Manual Chapter 8: Safety and Regulatory Information AVERTISSEMENT POUR UNE PROTECTION CONTINUÉ CONTRE LES RISQUES D’INCENDIE, REMPLACER UNIQUEMENT PAR DES FUSIBLES DE MÊME TYPE ET AMPÈRAGE. AVERTISSEMENT TOUT CONTACT AVEC LES HAUTES TENSIONS PEUT ENTRAINER LA MORT OU DES BLESSURES SÉVÈRES. CE PANNEAU NE DOIT ÊTRE ENLEVE QUE PAR UN...

  • Page 58: Electromagnetic Interference

    The FCC requires the user to be notified that any changes or modifications made to this device that MODIFICATIONS are not expressly approved by CETAC Technologies may void the user's authority to operate the equipment. Connections to this device must be made with shielded cables with metallic RFI/EMI connector CABLES hoods to maintain compliance with FCC Rules and Regulations.

  • Page 59: Glossary

    9 Glossary C-Flow: PFA microconcentric nebulizer. Hz: Hertz. ICP-MS: Inductively Coupled Plasma-Mass Spectrometer. ID: Inside diameter. LED: Light-emitting diode. Low-Flow: Sample flow-rate of approximately 100 µL/min. OD: Outside diameter. PEEK: Polyetheretherketone. PFA: Perfluoroalkoxy. PSI: Pounds per square inch. PTFE: Polytetraflouroethylene. PVC: Polyvinyl chloride.
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  • Page 61 Index accessories, 7 nitric acid, 30 autosampler, 17 operator qualifications, 6 avertissements, 56 optimization, 24 avis Canadien, 58 organic samples, 30 capillary, 46 organic solvents, 25 cerium tuning solution, 25 peristaltic pump tubing, 28 chemical compatibility, 5, 25 plasma problems, 46 cleaning, 31, 39, 54 pollution degree, 51 condensation.
  • Page 62 480144 Manual Part Number rev2 Printed in USA...

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