CEM MARSXpress Plus Manual
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CEM MARSXpress Plus Manual

110 ml microwave digestion vessel
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MARSXpress Plus
110 mL Microwave Digestion Vessel
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Summary of Contents for CEM MARSXpress Plus

  • Page 1 MARSXpress Plus 110 mL Microwave Digestion Vessel Manual...
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  • Page 3: Table Of Contents

    Contents Safety Fiber Optic Temperature Control (optional) Fiber Optic Installation Safety Notations Fiber Optic Temperature Verification Introduction Fiber Optic Care About the MARSXpress Plus Vessels Routine Maintenance Important Safeguards After Every Use Operating Parameters As Needed Annually Microwave Safeguards Sample Preparation Safeguards...
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  • Page 5: Safety

    Safety Safety Notations This manual uses three safety alert words at points in the documentation where the user should be aware of potential hazards. The safety alerts are shown in color-coded boxes. The three words – NOTE, CAUTION, and WARNING – indicate differing levels of observation or action as described below: NOTE A NOTE is intended to provide emphasis on procedures that may be misinterpreted or overlooked, or to clarify confusing situations.

  • Page 6: Introduction

    The MARSXpress™ Plus vessel is designed for microwave digestion in a MARS 6 with any temperature control option. The MARSXpress Plus vessel is well suited to run samples such as: plant and animal tissues, environmental, mixed food samples, consumer products, and industrial hygiene. Depending on the turntable capacity, up to twenty four (24) vessels can be prepared simultaneously to meet the throughput requirements of most analytical laboratories.

  • Page 7: Important Safeguards

    1.0 g * The 16 place turntable is only available with TFM liners. ** Contact CEM Corporation if longer times are required. Microwave Safeguards • Minimum volume for the MARS 6 cavity is 10 mL of acid or 50 mL of water.

  • Page 8: Vessel Safeguards

    Vessel Safeguards • Only use consumables, accessories, vessels and vessel components purchased directly from CEM or through its authorized dealer network. • All vessel components must be dry prior to use. • Always condition new liners, plugs, and caps. • Minimum vessel requirement: •...

  • Page 9: Vessel And Accessories Overview

    Vessel and Accessories Overview The MARSXpress Plus is available in 110 mL PFA and 110 mL TFM plastic liners. For a list of parts and part numbers, visit our website at www.cem.com. A list of parts can be found on the “Products” page under “MARS 6”.

  • Page 10: Accessories

    Accessories MARSXpress Plus Turntable* Sleeve Torque Tool Gripper MARSXpress Plus Liner Rack *A 16 place, outer row only, turntable is available. Vessel and Accessories Overview...

  • Page 11: New Liner, Plug, And Cap Conditioning

    All new liners and plugs should be conditioned as a set prior to being put into service. The break-in procedure is used to condition the Teflon® to ensure a proper seal. CEM recommends conditioning the plugs and liners based on the acid type that will be used.

  • Page 12: Non-Nitric Acid Liner, Plug, And Cap Conditioning

    Non-Nitric Acid Liner, Plug, and Cap Conditioning 1. Use hot soapy water and foam brush to clean the liners, plugs, and caps. Rinse thoroughly with DI water and allow to dry completely before use. NOTE Micro 90 Cleaner® liquid detergent works well on Teflon. Avoid detergents that contain ingredients that could cause potential contamination such as Na and P .

  • Page 13: Perform A Digestion

    Do not use water to dilute the acid(s) greater than 25% or to add volume before digestion. This can cause uneven heating of vessels. 5. Wait 15 minutes to allow pre-digestion. 6. If applicable, assemble the MARSXpress Plus Control Vessel. Perform a Digestion...
  • Page 14 6.1. Assemble the control cover. 6.1.1. Insert the open end of the thermowell into the underside of the control plug. CAUTION Do not force thermowell into control plug as it is fragile and may break. 6.1.2. Place the cap on the plug. 6.1.3.

  • Page 15: Turntable Setup

    WARNING Vessel torquing is critical to optimize controlled venting of the system and for the integrity of the vessel. Over or under torquing may lead to sealing issues. If any issue is noted, contact CEM Corporation. Turntable Setup 1. Load the control vessel in position "1" of the turntable.
  • Page 16 CAUTION If resistance is felt when trying to insert probe, ensure that the thermowell is not broken inside the Teflon cover. The sharp edges of any break can restrict the movement of the probe. 3. Load the remaining vessel assemblies into the turntable one by one. See “Vessel Distribution” section of this manual for optimal vessel distribution.

  • Page 17: Load And Perform A Method

    6. Load the turntable into the instrument by aligning position “1” with the front of the instrument. The turntable must be seated down on drive lug. WARNING The fully loaded turntable without sample may be heavy (>25 pounds (11 kg)). Use caution when lifting and loading into the cavity.
  • Page 18 2. Press the Home icon in the lower left corner of the screen to return to the Home page. Select/load the method from the directory, One Touch or Classic. See “Methods” section or contact CEM Corporation if assistance is needed creating a new method.

  • Page 19: Vessel Removal

    Vessel Removal 1. Allow the vessels to cool down in cavity for 15 minutes before opening the microwave door. WARNING To prevent the possibility of severe burns, ensure that gloves and protective gear as outlined in your safety program are worn. Proper precautions must be taken to avoid contact with acids or acid vapors.

  • Page 20: Cleaning And Inspection

    Cleaning and Inspection WARNING Proper precautions must be taken to avoid contact with acids or acid vapors. Protective gear should be worn as outlined in the user’s safety program for hazardous materials and the acid manufacturer’s safety data sheet. Refer to these guidelines for proper handling and disposal of the acids. Liners, Vent Plugs, and Caps 1.

  • Page 21: Sleeves

    CAUTION Only the liners should be placed in the air oven at 180 ºC. Sleeves can be placed in an air oven no greater than 105 °C. See “Sleeves” section for more detail. DO NOT bake-out caps. 2. Set the oven temperature to 180 °C and let the liners warm slowly. Do not exceed an oven temperature of 190 °C.

  • Page 22: Vessel Distribution

    Vessel Distribution Vessel Distribution Even vessel distribution is required for optimal performance. Proper spacing will eliminate hot spots, issues regarding turntable balance, and provide optimal temperature sensing. Number of Vessels Vessel Distribution 1 - 8 Inner row only - even distribution 9 - 16 Outer row only - even distribution 17 - 24...

  • Page 23: Methods

    Methods One Touch Methods supplied with a MARS 6 are methods created by CEM Applications Specialists. This takes the guesswork out of method creation and sample preparation. With these methods, one touch (selecting the method) determines all of the parameters, adjusts power output, and performs the digestion for all major sample types.

  • Page 24: Fiber Optic Temperature Control (Optional)

    Fiber Optic Temperature Control (optional) The Fiber Optic probe provides direct temperature measurement inside the control vessel. Fiber Optic Installation If the vessel set requires fiber optic temperature control, install and enter the GF value as outlined below. 1. Connect the fiber optic probe to the port in the top center of the MARS 6 cavity by pushing in the plug until it snaps into place 2.

  • Page 25: Fiber Optic Temperature Verification

    NOTE If “---” appears as the temperature, then the MARS 6 does not recognize the Fiber Optic Probe. The probe is either not installed or is not working properly. 10. Press the Home icon in the lower left corner of the screen to return to the Home page. Fiber Optic Temperature Verification 1.

  • Page 26: Routine Maintenance

    • Bake-out Procedure: See “Liner Bake-out Procedure” for detailed instructions. The bake-out procedure can be used to remove residual acid vapors and other trapped gases from the Teflon® material. Annually • Contact CEM Service Department, local CEM subsidiary or authorized dealer for information on CEM Service contracts. Routine Maintenance...

  • Page 27: Troubleshooting

    Information icon located at the top of the screen. “Organic” is the recommend sample type for most samples. Contact CEM before selecting any other sample types. Vessel Plug not in place Place vessel plug on top of liner before securing with the cap. See “Vessel Assembly”...

  • Page 28: Technical Assistance

    “Analytical Support”, or email MARS applications support at analytical.support@cem.com. Technical Support CEM is proud to provide technical support from a team of specially trained Service Technicians. For technical support in the US and Canada, call (800) 726-5551 or (704) 821-7015 and ask for “MARS 6 Service” or email service@cem.com.
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  • Page 30 2 Middle Slade, Buckingham Industrial Estate, Buckingham MK181WA (44) 1280-822873 Fax: (44) 1280-822873 info.uk@cem.com For a complete list of distributors of CEM products, including contact information, go to the CEM website (http://www.cem.com) Copyright 2019 by CEM Corporation iWave is a registered trademark of CEM Part Number 600969 All Rights Reserved.

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