Calibration, Verification, and Operation of a Multiwave Go Microwave System

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1.0 Purpose 
 
 This procedure provides instruction for the calibration, verification and operation of a
 
 microwave system for the digestion of samples and specific instruction for the operation of the
 Multiwave Go. 
 
 2.0 Scope 
 
 This procedure applies to the Multiwave Go microwave digestions system in use at Ion Labs,
 Inc. 
 
 3.0 Responsibility 
 
 3.1 It is the responsibility of QC Laboratory personnel to comply with this procedure.
 
 3.2 It is the responsibility of QC Laboratory Management to implement this procedure and
 
 to ensure that the procedure is being followed. 
 
 3.3. It is the responsibility of QC Laboratory Management and/or Analytical Development
 
 to keep this procedure current with Ion Labs practices. 
 
 4.0 Definitions 
 
 4.1 QC-— Quality Control 
 
 4,2 SOP — Standard Operating Procedure 
 
 4.3. IR-— Infrared 
 
 4.4 W — Watts 
 
 
 

[SOP 

 Standard Operating Procedure SOP No | Rev 
 Calibration, Verification and Operation of a D-825 2 M4 aee 
 
 Multiwave Go Microwave System 
 
 4.5 PPE -— Personal Protective Equipment 
 
 5.0 References 
 
 5.1 Anton Paar Multiwave Go Standard Operating Procedure booklet 
 
 SZ Anton Paar Multiwave Go owner’s manual 
 
 5.3. Anton Paar Multiwave Go Standard Operating Procedure video 
 
 6.0 Overview 
 
 6.1 The Multiwave Go is a digestion system that uses a single magnetron to deliver up to
 850W of microwave power over the full power range for the routine analysis of a
 
 variety of samples. 
 
 $ Rotor bd magnet 
 < Astor fd 
 3 Pressure vesse? 4YTS0 
 4 Rotor body 
 5 Centenng clafe 
 & Hendie 
 f LfiSiGe'ds y Fig 3-4 Rotor T2HVISC 
 2*” (iqd opener 
 3% U1?S E por; 
 HighAhroughput rotor with 12 hagh-performance
 Fig. 3-2: Front view of Multwave 5c pressute-activated-venting vessels made of PTFE-
 TEM (50 mL) for routine and quality control appkea-
 8ons 
 
 Fig. 3-5 Pressure veasel HVTSO 
 High-performance reaction vessel with pressure-ac-
 tivated-venting for routine and quality contre! appl.
 cations made of PTFE-TFM 
 
 

[SOP 

 Standard Operating Procedure SOP No | Rev 
 Calibration, Verification and Operation of a D-825 2 Page 
 3 of 6 
 Multiwave Go Microwave System 
 
 6.2 All personel involved in the operation and maintenace of the device must be properly
 
 trained. 
 
 6.3 Exhaust hose must be installed and vented into fume hood when in use.
 
 6.4 Strong magnetic fields can be produced and persons with pacemakers should keep a
 
 distance of at least 1m during the operation of the device. 
 
 6.5 Cards (i.e. credit cards) can be damaged or deactivated by these fields.
 
 7.0 Procedure 
 
 7.1 Location and Setup 
 
 7.1.1 The Multiwave Go requires a non-corrosive environment in an area without risk
 
 of explosion. 
 
 7.1.2 The Multiwave Go requires a fume hood within reach of the exhaust tubing for
 
 proper removal of fumes that may be generated. 
 
 7.1.3 The meter is powered up by first plugging in then flipping the rocker switch on
 
 the back of the instrument. 
 
 7.2 Performance Verification 
 
 7.2.1 IR Sensor verification should be performed at least once a month using the
 provided ceramic heating device as described below. 
 
 7.2.1.1 Open the lid of the Multiwave Go by pressing the black rectangular
 button on the front of the device. 
 
 7.2.1.2 Remove the circular drive ring and place the ceramic heating element
 containing calibration unit into the two bores of the cavity of the unit
 
 over the top of the IR heat sensor. 
 
 7.2.1.3. Connect the plug of the calibration unit to the rear of the unit and begin
 
 the verification of the IR sensor by first pressing <Menu> then
 
 <Service> then T-Calibration. Lastly hit <Start>. 
 
 

[SOP 

 Standard Operating Procedure SOP No | Rev ‘ 
 Calibration, Verification and Operation of a D-825 2 4 = 
 
 Multiwave Go Microwave System 
 
 7.2.1.4 Calibration can be saved or printed/exported or rejected. Range should
 
 be £5°C. 
 
 7.2.1.5 If values deviate by more than +5°C check the positioning of the
 
 calibration unit and the clear foil covering the IR sensor. Replace this
 if necessary and repeat IR sensor calibration. If deviation persists,
 
 contact Anton Paar for service. 
 
 7.3 Safe Use 
 
 7.3.1 Appropriate sample amount should be weighed in supplied pressure vessels (see
 
 section 6.0 for picture) 
 
 7.3.2 Acid mixture should be added, ensuring that the sides are washed as best as
 
 possible. 
 
 7.3.3. Pressure release valve and cap should be added and screwed on.
 
 Note: Cap spring holder and spring holder insert must be level. Indents are a sign of
 undertightening. Protrusion is a sign of overtightening. 
 
 incorrect 
 
 correct 
 
 7.3.4 Be sure to immediately load tightened vessels into rotor as they ARE NOT
 pressure stable without added support from rotor 
 
 7.3.5 To ensure uniform heating, load the rotor in recommended load patterns (below)
 
 

[SOP 

 Standard Operating Procedure SOP No | Rev 
 Calibration, Verification and Operation of a D-825 2 nage 
 : S of 6 
 Multiwave Go Microwave System 
 
 Multi vessel mode 
 
 12 8 6 4 3 
 single vessel mode 
 
 _~ Position No.1 
 
 7.3.6 Before putting the lid on the rotor, inspect the foam lining in the lid. If it shows
 
 breakage, replace before using the lid. 
 
 7.3.7 Put the lid onto the rotor and place onto the drive ring. 
 
 7.3.8 Close lid and select method. 
 
 7.4 Choosing a method/Starting a run 
 
 7.4.1 Use the to open the method selection menu. 
 
 7.4.2 From here, run name must be entered and method must be selected from drop
 down list. 
 
 a se Pe 
 7.4.3. Use to accept changes then start to begin run. 
 
 7.4.4 Only after run is completed and samples are cooled, can the unit be opened.
 
 7.4.5 With proper PPE and in a fume hood, slowly, while pointing away from people,
 
 unscrew the screw caps of the vessels. 
 
 

[SOP 

 Standard Operating Procedure SOP No | Rev 
 Calibration, Verification and Operation of a D-825 Page 
 6 of 6 
 Multiwave Go Microwave System 
 
 7.4.6 After each run, all condensation within the microwave or any components
 
 should be cleaned promptly to prevent corrosion. 
 
 7.5 Digestion Vessel Cleaning 
 
 7.5.1 Soak vessels for at least one hour in a 1% citranox solution.
 
 7.5.2 Rinse vessels with hot tap water. Be sure to pass water through the pressure
 release valve. 
 
 7.5.3 For difficult to remove contamination or visually dirty (after above cleaning)
 
 vessels: add 4 mL of water and 3 mL of nitric acid to the digestion vessel.
 Perform a digestion cycle ramping the temperature to 180°C over 10 minutes
 
 and hold at 180°C for 10 minutes. 
 
 7.5.4 In some cases, a rinse with organic solvent (methanol or isopropanol) may be
 required to remove partially digested samples. 
 
 Only for extremely resistant residual contamination, a test tube brush may be
7.5.5 used. Take extreme care not to scratch the Teflon vessel with the test tube

 brush. 
 
 Rinse vessels with DI water. Be sure to pass water through the pressure release
7.5.6 valve.

 7.5.7 Allow vessel to air dry before use. 
 
 8.0 Revision History 

| Rev | Date | Description of Changes | CCR # | By |
|-----|----------|------------------------|-------|----|
| 0 | 05/23/19 | New procedure. N/A J. Maignan Il 09/07/22 Scheduled review: updated logo and format. CC-22-0371 K. Burris > 01/10/23 Ss to include cleaning details for vessels. Reference INV- CC-23-0015 J. Sassman | - | - |