QUANTACHROME INSTRUMENTS MULTIPYCNOMETER Manual Download

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TABLE OF CONTENTS

MULTIPYCNOMETER ................................................................................................ 1

1.0.

PURPOSE ....................................................................................................... 3

2.0.

SCOPE............................................................................................................ 3

3.0.

DEFINITIONS ................................................................................................. 3

4.0.

RESPONSIBILITIES ....................................................................................... 4

5.0.

REQUIREMENTS ........................................................................................... 5

5.1.

ELECTRICAL AND MECHANICAL INSPECTION ......................................... 5

5.2.

POWER CHECKS .......................................................................................... 7

5.3.

ALIGNMENTS ............................................................................................... 8

5.4.

LEAK TEST .................................................................................................. 12

5.5.

CALIBRATION .............................................................................................. 16

6.0.

REFERENCES .............................................................................................. 26

APPENDIX A ............................................................................................................ 27

APPENDIX B ........................................................................................................... 28

APPENDIX B ........................................................................................................... 29

B.2. INSTRUMENT CALIBRATION SHEET FOR THE LARGE CELL .................... 29

B.3. INSTRUMENT CALIBRATION SHEET FOR THE SMALL CELL..................... 30

B.4. INSTRUMENT CALIBRATION SHEET FOR THE MICRO CELL ..................... 32

APPENDIX C ........................................................................................................... 34

C.1 SPHERE RUNS’ DATA SHEETS ...................................................................... 34

APPENDIX D ............................................................................................................ 35

Summary of Contents for MULTIPYCNOMETER

Page 1: ...MULTIPYCNOMETER QUALITY ASSURANCE AND SERVICE MANUAL REVISION K MANUAL NUMBER 05300 114 DATE OF LATEST REVISION 03 24 14 ISSUE DATE 7 18 16 COPYRIGHT 1997 2016 QUANTACHROME INSTRUMENTS ...

Page 2: ...TION 5 5 2 POWER CHECKS 7 5 3 ALIGNMENTS 8 5 4 LEAK TEST 12 5 5 CALIBRATION 16 6 0 REFERENCES 26 APPENDIX A 27 APPENDIX B 28 APPENDIX B 29 B 2 INSTRUMENT CALIBRATION SHEET FOR THE LARGE CELL 29 B 3 INSTRUMENT CALIBRATION SHEET FOR THE SMALL CELL 30 B 4 INSTRUMENT CALIBRATION SHEET FOR THE MICRO CELL 32 APPENDIX C 34 C 1 SPHERE RUNS DATA SHEETS 34 APPENDIX D 35 ...

Page 3: ...TS AND SALES PEOPLE 2 3 THESE REQUIREMENTS APPLY TO OTHER MULTIPYCNOMETER MODELS WITH MODIFICATIONS OUTLINED IN APPENDIX A 3 0 DEFINITIONS 3 1 MULTIPYCNOMETER APPARATUS DESIGNED TO MEASURE TRUE SOLID VOLUMES BY A GAS EXPANSION TECHNIQUE KNOWN AS HELIUM PYCNOMETRY 1 2 3 2 QUALITY ASSURANCE FULL COMPLIANCE WITH PROCEDURES AND STANDARDS ITEMIZED IN THE COMPANY QUALITY MANUAL 3 3 SERVICE GUIDELINES PR...

Page 4: ... SELECTOR VALVE TWO POSITION BALL VALVE LOCATED ON THE MULTIPYCNOMETER S CABINET FACE FOR SWITCHING BETWEEN POSITIONS LABELED CELL AND REFERENCE 4 0 RESPONSIBILITIES 4 1 THE FOLLOWING PROCEDURE SHALL BE PERFORMED ONLY BY INDIVIDUALS TRAINED AS ELECTRICAL AND MECHANICAL TECHNICIANS 4 2 QUANTACHROME TECHNICIANS SHALL BE FULLY TRAINED ON ELECTRICAL PROCEDURES MECHANICAL ASSEMBLY AND GAS HANDLING OPER...

Page 5: ...AWING 5 1 1 2 VISUALLY INSPECT THE DIGITAL PANEL METER CONNECTOR FOR CORRECT WIRING AND ALL SOLDERING FOR COLD JOINTS 5 1 1 3 VERIFY THAT TWO 2 AMP FUSES ARE INSTALLED IN THE CORCOM REMOVE THE FUSE BY SLIDING THE BLACK HANDLE IN THE CORCOM TO THE LEFT REINSTALL THE FUSES IF THE AMPERAGE IS CORRECT 5 1 1 4 RECONFIGURE THE CORCOM TO MATCH THE VOLTGE REQUIRED FOR THE CUSTOMER ORDER FUSED ELECTRICAL R...

Page 6: ...APPLY A VERY LIGHT COAT OF VACUUM GREASE TO THE O RING AND REINSTALL IT IN THE CELL COVER 5 1 2 4 INSPECT THE SAMPLE CELL HOLDER TO MAKE SURE THAT IT HAS NO SCRATCHES AND VERIFY THAT THE GAS INLET GROOVE IS CLEAN FREE OF DIRT AND THAT ITS FLOW PATH IS UNRESTRICTED 5 1 2 5 VERIFY THAT ALL FITTINGS ARE SET ON TIGHTLY AND THAT ALL SOLDER JOINTS ARE CLEAN NOT COLD AND HAVE SHRINKABLE CLEAR TUBING OVER...

Page 7: ... CARD SO THAT THE VOLTAGE YOU ARE CONFIGURING THE UNIT FOR FACES YOU AND SLIDE THE CARD BACK IN THE SLOT 5 2 1 3 USING AN OHM METER TEST FOR CONTINUITY ACROSS THE LINE INPUT TERMINALS THE READING SHOULD BE INFINITY OPEN CIRCUIT 5 2 1 4 USING AN OHM METER TEST FOR CONTINUITY BETWEEN THE INPUT LINE TERMINALS AND THE CHASSIS GROUND THE READING SHOULD BE INFINITY OPEN CIRCUIT 5 2 1 5 USING AN OHM METE...

Page 8: ...MALL PRINTED CIRCUIT BOARD 5 3 ALIGNMENTS 5 3 1 DIGITAL PANEL METER 5 3 1 1 TURN THE INSTRUMENT S POWER SWITCH TO ON VERIFY THAT THE DIGITAL PANEL DISPLAYS NUMBERS THAT ARE BRIGHT AND CLEAR 5 3 1 2 TURN THE ZERO ADJUSTMENT KNOB ON THE FRONT PANEL FROM STOP TO STOP SLOWLY AND VERIFY THAT SMOOTH DIGITAL CHANGES OCCUR AND THAT ALL SEGMENTS OF EACH DIGIT ILLUMINATE 5 3 1 3 TURN THE ZERO ADJUSTMENT KNO...

Page 9: ...e the decimal 5 3 2 5 Press Program button Display toggles between Cod_1 and 061 Change Cod_1 to 000 5 3 2 6 Press Program button Display toggles between Cod_2 and XXX Change Cod_2 to 001 5 3 2 7 Press Program button Display toggles between Cod_3 and XXX Change Cod_3 to 000 5 3 2 8 Press Program button Display toggles between Cod_4 and XXX Note Set Cod_4 to 000 for 60 Hz Change Cod_4 to 000 Set Co...

Page 10: ...m the next step SPC_5 then come back to this step Ensure SPC_5 is set to 000 You should now be able to set up SP_5 to 1 000 Continue and perform the next step before locking the meter 5 3 2 15 Press Program button repeatedly until the Display toggles between SPC_5 and 000 Change SPC_5 to 46 5 3 2 16 Check all the setting before lock STEP B LOCK CODE SETUP 5 3 2 17Loosen the meter from cabinet 5 3 ...

Page 11: ...ICH REMOVE THE GAS INPUT LINE MOMENTARILY TO ALLOW THE PRESSURE RELIEF VALVE TO RESET 5 3 3 3 USING A 5 16 HEX ALLEN WRENCH SET THE RELIEF VALVE TO JUST STOP AT 25 PSIG CHECK THE SETTING BY SUBMERGING THE END OF THE RELIEF VALVE IN A BEAKER OF WATER IN ORDER TO VERIFY THAT NO BUBBLES ARE FORMED AT 25 PSIG INCREASE THE TANK PRESSURE AS DISPLAYED ON THE CALIBRATED PRESSURE GAUGE TO 26 PSIG AND VERIF...

Page 12: ...TO THE MICRO SLEEVE PLACE THE FILLED SLEEVE INTO THE CELL HOLDER AND THEN CLOSE THE CELL HOLDER COVER SET GAS IN NEEDLE VALVE TO 0 BY ADJUSTING KNOB AND SET SCREW 5 4 1 3 OPEN THE GAS OUT TOGGLE VALVE AND THE GAS OUT NEEDLE VALVE 5 4 1 4 SET THE SELECTOR VALVE TO THE CELL POSITION 5 4 1 5 OPEN BOTH TOGGLE VALVES I AND II ON THE FRONT PANEL 5 4 1 6 OPEN THE GAS IN TOGGLE VALVE AND ADJUST THE GAS IN...

Page 13: ...R 5 4 2 5 TURN THE SELECTOR VALVE TO THE REFERENCE POSITION AND CLOSE THE GAS OUT TOGGLE VALVE 5 4 2 6 OPEN THE GAS IN TOGGLE VALVE AND WHEN THE DIGITAL PANEL METER READS 19 0 PSIG CLOSE THE GAS IN TOGGLE VALVE 5 4 2 7 RECORD THE FIRST STABLE READING AS THE STARTING PRESSURE AND ENTER THAT READING ON THE INSTRUMENT CHECK SHEET IN APPENDIX B 1 ITEM B 1 3 7 AS THE STARTING PRESSURE FOR MICRO THIS WI...

Page 14: ...ING PRESSURE AND ENTER THAT READING ON THE INSTRUMENT CHECK SHEET IN APPENDIX B 1 ITEM B 1 3 7 AS THE STARTING PRESSURE FOR SMALL THIS WILL SIGNAL THE BEGINNING OF A 1 MINUTE LEAK TEST 5 4 3 8 AFTER 1 MINUTE HAS ELAPSED RECORD THE READING AS DISPLAYED ON THE DIGITAL PANEL METER AND ENTER THAT READING AS PRESSURE AFTER 1 MINUTE FOR SMALL ON THE INSTRUMENT CHECK SHEET IN APPENDIX B 1 ITEM B 1 3 7 TH...

Page 15: ...DER AND CLOSE THE COVER PURGE THE INSTRUMENT FOR AN ADDITIONAL MINUTE TO REMOVE ALL AIR WITHIN IT 5 4 5 2 CLOSE ALL THE TOGGLE VALVES 5 4 5 3 TURN THE SELECTOR VALVE ON THE FRONT PANEL TO THE CELL POSITION AND THEN OPEN THE GAS OUT TOGGLE VALVE 5 4 5 4 TURN THE ZERO ADJUSTMENT KNOB ON THE FRONT PANEL UNTIL A 0 000 PSIG READING IS DISPLAYED ON THE DIGITAL PANEL METER CLOSE THE GAS OUT TOGGLE VALVE ...

Page 16: ...CHECK SHEET IN APPENDIX B 1 ITEM B 1 3 7 AS THE STARTING PRESSURE FOR FOUR WAY THIS WILL SIGNAL THE BEGINNING OF A 1 MINUTE LEAK TEST 5 4 6 8 AFTER 1 MINUTE HAS ELAPSED RECORD THE READING AS DISPLAYED ON THE DIGITAL PANEL METER AND ENTER THAT READING AS PRESSURE AFTER 1 MINUTE FOR FOUR WAY ON THE INSTRUMENT CHECK SHEET IN APPENDIX B 1 ITEM B 1 3 7 THE CALCULATED LEAK RATE MUST BE NO GREATER THAN 0...

Page 17: ...ESSURE DISPLAYED ON THE DIGITAL PANEL METER DOES NOT CHANGE DURING A 10 SECOND PERIOD TAKE THE aP1 PRESSURE READING ON THE DIGITAL PANEL METER AND ENTER THAT NUMBER ON THE INSTRUMENT CALIBRATION SHEET IN APPENDIX B 2 ITEM B 2 3 AS aP1 5 5 2 8 TURN THE SELECTOR VALVE ON THE FRONT PANEL TO THE CELL POSITION 5 5 2 9 VERIFY THAT THE NEW PRESSURE DISPLAYED ON THE DIGITAL PANEL METER DOES NOT CHANGE DUR...

Page 18: ... THE DIGITAL PANEL METER READS 17 0 PSIG CLOSE THE GAS IN TOGGLE VALVE 5 5 3 7 VERIFY THAT THE PRESSURE DISPLAYED ON THE DIGITAL PANEL METER DOES NOT CHANGE DURING A 10 SECOND PERIOD TAKE THE bP1 PRESSURE READING ON THE DIGITAL PANEL METER AND ENTER THAT NUMBER ON THE INSTRUMENT CALIBRATION SHEET IN APPENDIX B 2 ITEM B 2 7 AS bP1 5 5 3 8 TURN THE SELECTOR VALVE ON THE FRONT PANEL TO THE CELL POSIT...

Page 19: ...OUT TOGGLE VALVE 5 5 5 TURN THE SELECTOR VALVE TO THE REFERENCE POSITION AND CLOSE THE GAS OUT TOGGLE VALVE 5 5 6 OPEN THE GAS IN TOGGLE VALVE AND WHEN THE DIGITAL PANEL METER READS 17 0 PSIG CLOSE THE GAS IN TOGGLE VALVE 5 5 7 VERIFY THAT THE PRESSURE DISPLAYED ON THE DIGITAL PANEL METER DOES NOT CHANGE DURING A 10 SECOND PERIOD TAKE THE P1 PRESSURE READING ON THE DIGITAL PANEL METER AND ENTER TH...

Page 20: ...THE GAS IN TOGGLE VALVE 5 5 6 7 VERIFY THAT THE PRESSURE DISPLAYED ON THE DIGITAL PANEL METER DOES NOT CHANGE DURING A 10 SECOND PERIOD TAKE THE cP1 PRESSURE READING ON THE DIGITAL PANEL METER AND ENTER THAT NUMBER ON THE INSTRUMENT CALIBRATION SHEET IN APPENDIX B 3 ITEM B 3 3 AS cP1 5 5 6 8 TURN THE SELECTOR VALVE ON THE FRONT PANEL TO THE CELL POSITION 5 5 6 9 VERIFY THAT THE NEW PRESSURE DISPLA...

Page 21: ...IGITAL PANEL METER DOES NOT CHANGE DURING A 10 SECOND PERIOD TAKE THE dP1 PRESSURE READING ON THE DIGITAL PANEL METER AND ENTER THAT NUMBER ON THE INSTRUMENT CALIBRATION SHEET IN APPENDIX B 3 ITEM B 3 7 AS dP1 5 5 6 8 TURN THE SELECTOR VALVE ON THE FRONT PANEL TO THE CELL POSITION 5 5 7 9 VERIFY THAT THE NEW PRESSURE DISPLAYED ON THE DIGITAL PANEL METER DOES NOT CHANGE DURING A 10 SECOND PERIOD TA...

Page 22: ...ND CLOSE THE GAS OUT TOGGLE VALVE 5 6 3 6 OPEN THE GAS IN TOGGLE VALVE AND WHEN THE DIGITAL PANEL METER READS 17 0 PSIG CLOSE THE GAS IN TOGGLE VALVE 5 6 3 7 VERIFY THAT THE PRESSURE DISPLAYED ON THE DIGITAL PANEL METER DOES NOT CHANGE DURING A 10 SECOND PERIOD TAKE THE P1 PRESSURE READING ON THE DIGITAL PANEL METER AND ENTER THAT NUMBER ON THE SMALL SPHERE RUN DATA SHEET APPENDIX C ITEM C 1 3 5 6...

Page 23: ...1 PRESSURE READING ON THE DIGITAL PANEL METER AND ENTER THAT NUMBER ON THE INSTRUMENT CALIBRATION SHEET IN APPENDIX B 4 ITEM B 4 3 AS eP1 5 6 4 8 TURN THE SELECTOR VALVE ON THE FRONT PANEL TO THE CELL POSITION 5 6 4 9 VERIFY THAT THE NEW PRESSURE DISPLAYED ON THE DIGITAL PANEL METER DOES NOT CHANGE DURING A 10 SECOND PERIOD TAKE THE eP2 PRESSURE READING ON THE DIGITAL PANEL METER AND ENTER THAT NU...

Page 24: ...UMBER ON THE INSTRUMENT CALIBRATION SHEET IN APPENDIX B 4 ITEM B 4 7 AS fP1 5 7 8 TURN THE SELECTOR VALVE ON THE FRONT PANEL TO THE CELL POSITION 5 7 9 VERIFY THAT THE NEW PRESSURE DISPLAYED ON THE DIGITAL PANEL METER DOES NOT CHANGE DURING A 10 SECOND PERIOD TAKE THE fP2 PRESSURE READING ON THE DIGITAL PANEL METER AND ENTER THAT NUMBER ON THE INSTRUMENT CALIBRATION SHEET IN APPENDIX B 4 ITEM B 4 ...

Page 25: ... VALVE AND WHEN THE DIGITAL PANEL METER READS 17 0 PSIG CLOSE THE GAS IN TOGGLE VALVE 5 9 7 VERIFY THAT THE PRESSURE DISPLAYED ON THE DIGITAL PANEL METER DOES NOT CHANGE DURING A 10 SECOND PERIOD TAKE THE P1 PRESSURE READING ON THE DIGITAL PANEL METER AND ENTER THAT NUMBER ON THE MICRO SPHERE RUN DATA SHEET APPENDIX C ITEM C 1 4 5 9 8 TURN THE SELECTOR VALVE ON THE FRONT PANEL TO THE CELL POSITION...

Page 26: ...RD ED CHAPMAN AND HALL NY 1991 6 2 QUANTACHROME MULTIPYCNOMETER OPERATION MANUAL PART NUMBER 05034 6 3 MECHANICAL ASSEMBLY DIAGRAM BM114 1618 2 THREE SHEETS 6 4 ELECTRICAL ASSEMBLY DIAGRAM BM114 1618 1 ONE SHEET 6 5 QUANTACHROME SCHEMATIC AND WIRING DIAGRAM DRAWING NUMBER C000 0094 ...

Page 27: ...1 1 MODIFICATIONS FOR USE WITH ALL MULTIPYCNOMETER MODELS ARE LISTED BELOW DATE MODEL MODIFICATION APPROVED BY 6 20 95 MVP 2 DIGITAL FRONT PANEL METER CHANGED ONLY AFFECTED THE MODEL D J S C B 10 29 96 MVP 3 CUT AWAY CELL ONLY AFFECTED THE MODEL D S ...

Page 28: ... 5 1 1 B 1 3 2 MECHANICAL CHECKS SECTION 5 1 2 B 1 3 3 AC CHECKS SECTION 5 2 1 B 1 3 4 DC CHECKS SECTION 5 2 2 24 00 0 01 VDC 5 00 0 01 VDC B 1 3 5 DIGITAL PANEL METER SECTION 5 3 1 0 0000 PSIG B 1 3 6 PRESSURE RELIEF VALVE SECTION 5 3 2 25 PSIG B 1 3 7 LEAK TEST PURGE SECTION 5 4 1 30 MINUTE LEAK TEST 5 4 2 MICRO 5 4 3 SMALL 5 4 4 LARGE 5 4 5 CELL 5 4 6 FOUR WAY STARTING PRESSURE PRESSURE AFTER 1...

Page 29: ... PRESSURES BEFORE AND AFTER EXPANSION SECTION 5 5 2 RESPECTIVELY aP1 aP2 aP 1 2 3 4 5 a TOTALa 5 B 2 4 COLUMN aP LISTS FIVE CONSECUTIVE PASSES OF ITEMS THE aP RATIO MUST FALL WITHIN 0 0005 OF EACH OTHER BEFORE THEIR SUM CAN BE AVERAGED B 2 5 TOTALa IS THE SUM OF FIVE CONSECUTIVE aP READINGS ENTER THE SUM AS TOTALa IN SECTION B 2 3 B 2 6 a IS THE AVERAGE OF FIVE CONSECUTIVE aP VALUES B 2 7 VCb LARG...

Page 30: ... 12 VC LARGE VR LARGE B 3 INSTRUMENT CALIBRATION SHEET FOR THE SMALL CELL B 3 1 THIS INSTRUMENT CALIBRATION SHEET IS TO BE FILLED COMPLETELY BY THE TECHNICIAN OR OPERATOR INVOLVED WHEN FULLY CALIBRATING THE MULTIPYCNOMETER B 3 2 1 OPERATOR B 3 2 2 DATE B 3 2 3 MODEL B 3 2 4 SERIAL NUMBER B 3 3 VCc SMALL S cP1 AND cP2 ARE THE PRESSURES BEFORE AND AFTER EXPANSION RESPECTIVELY cP1 cP2 cP 1 2 3 4 5 c ...

Page 31: ...TER EXPANSION RESPECTIVELY dP1 dP2 dP 1 2 3 4 5 d TOTALd 5 B 3 8 COLUMN dP LISTS FIVE CONSECUTIVE PASSES OF ITEMS THE dP RATIO MUST FALL WITHIN 0 0005 OF EACH OTHER BEFORE THEIR SUM CAN BE AVERAGED B 3 9 TOTALd IS THE SUM OF FIVE CONSECUTIVE dP READINGS ENTER THE SUM AS TOTALd IN SECTION B 3 7 B 3 10 d IS THE AVERAGE OF FIVE CONSECUTIVE dP VALUES VC large VC LARGE B 3 11 VR SMALL c 1 d 1 B 3 12 VC...

Page 32: ...2 3 MODEL B 4 2 4 SERIAL NUMBER B 4 3 VCe MICRO S eP1 AND eP2 ARE THE PRESSURES BEFORE AND AFTER EXPANSION RESPECTIVELY eP1 eP2 eP 1 2 3 4 5 e TOTALe 5 B 4 4 COLUMN eP LISTS FIVE CONSECUTIVE PASSES OF ITEMS THE eP RATIO MUST FALL WITHIN 0 0005 OF EACH OTHER BEFORE THEIR SUM CAN BE AVERAGED B 4 5 TOTALe IS THE SUM OF FIVE CONSECUTIVE eP READINGS ENTER THE SUM AS TOTALe IN SECTION B 4 3 B 4 6 e IS T...

Page 33: ... FIVE CONSECUTIVE PASSES OF ITEMS IN SECTION 5 5 9 THE fP RATIO MUST FALL WITHIN 0 0005 OF EACH OTHER BEFORE THEIR SUM CAN BE AVERAGED B 4 9 TOTALf IS THE SUM OF FIVE CONSECUTIVE fP READINGS ENTER THE SUM AS TOTALf IN SECTION B 4 7 B 4 10 f IS THE AVERAGE OF FIVE CONSECUTIVE fP VALUES 2 145 cc SPHERE 2 145 cc B 4 11 VR MICRO e f e 1 B 4 12 VC MICRO VR MICRO ...

Page 34: ...EN FROM SECTION 5 6 2 AND ENTERED BELOW P P1 P2 PVR LARGE P VR LARGE PVR PVR LARGE 1 VP VC PVR VP 0 4 UPPER LIMIT 56 7854 cc LOWER LIMIT 56 3330 cc C 1 3 SMALL SPHERE RUN SAMPLE VOLUME VP 9 2149 cc DATA ARE TO BE TAKEN FROM SECTION 5 6 3 AND ENTERED BELOW P P1 P2 PVR SMALL P VR SMALL PVR PVR SMALL 1 VP VC PVR VP 0 7 UPPER LIMIT 9 2794 cc LOWER LIMIT 9 1504 cc C 1 4 MICRO SPHERE RUN SAMPLE VOLUME V...

Page 35: ...PRINTED CIRCUIT BOARD 15009 1100 1K ZERO POTENTIOMETER 20032 DIGITAL PANEL METER 30041 POWER SUPPLY 01500 MICRO MICRO CALIBRATION SPHERE 01500 LARGE LARGE CALIBRATION SPHERE 04000 0413 SMALL ALUMINUM SLEEVE 04000 3321 MICRO ALUMINUM SLEEVE 04000 3320 MICRO ALUMINUM SAMPLE CELL 4 2 cc 04000 0648 SMALL ALUMINUM SAMPLE CELL 15 0 cc 04000 0414 LARGE ALUMINUM SAMPLE CELL 130 0 cc 04000 0475 CELL HOLDER...

Page 36: ... CELL 44 0 cc 04000 0648 1 SMALL STAINLESS STEEL SAMPLE CELL 15 0 cc 04000 3320 1 MICRO STAINLESS STEEL SAMPLE CELL 4 2 cc 04000 3707 1 NANO STAINLESS STEEL SAMPLE CELL 0 26 cc 01251 0414 LARGE ALUMINUM NON ELUTRIATING SAMPLE CELL 01252 0648 SMALL ALUMINUM NON ELUTRIATING SAMPLE CELL 01254 3314 MEDIUM ALUMINUM NON ELUTRIATING SAMPLE CELL 01256 3320 MICRO ALUMINUM NON ELUTRIATING SAMPLE CELL 01251 ...

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