Document wDBjBn77z7O3o7MDMZNGm1gXo

I Section Number: Issue Number: Original Date: Revision Date: Title: References: Ethanolamines/Glycol Ethers Tier 3 Procedure 642 1.5 03-31-92 Author: David Franklin 03-13-98 Running A Catalyst Concentration Titration Glossary Of Equipment Identification (Text #114) 642 Running A Catalyst Concentration Titration 1.0 Objective: 1.1 To provide step by step instructions necessary to properly conduct catalyst concentration titration analysis. 2.0 Responsibility: 2.1 It is the responsibility of the operator performing the task to ensure that this procedure is executed in a safe and efficient manner. 3.0 Special Notations: 3.1 Rubber gloves are recommended but not required. 4.0 Get Ready: Titrator Switches And Dials Should Be Set As Follows: 4.1 1. Power on; II on 4.2 2. L2 off; stop mode 4.3 3. L3 on; stand by mode. 4.4 4. Pen up. 4.5 5. Mm/100% vol at 200. 4.6 6. Stop % u off. 4.7 7. Auto control at 5 4.8 8. Min/100% vol at 15 4.9 9. Mv x 100 at ph = 7 (scale at right side) 4.10 10. D'u/dvol setting. Date Printed: April 18, 1998 Page 1 Of 3 Paper Copies Of This Document Are Uncontrolled & Not Subject To Update. The Controlled Document Resides In File: Lab/Catsampl.doc A 05999^ CONFIDENTIAL 4.11 11. Set at ph = 10. 4.12 12. Mv/ph normally 95-100. 4.13 13. U (cal. Factor) re-set at calibration. 4.14 14. Degrees c normal room temperature. 4.15 15. Damper switch in back of console must be on 4.16 16. Install the plug in reservoir/buret unit containing the appropriate acid. 5.0 Titration: 5.1 By squeezing the release trigger under the electrode assembly arm, raise the electrode(s) out of the electrolyte or buffer solution. 5.2 Place an empty beaker under the electrode(s) 5.3 Rinse the electrode with deionized water only. 5.4 Discard the rinses 5.5 Draw up 10.0 ml sample and put into a clean titration beaker containing a stirring bar. 5.6 Add 40 ml deionized water. 5.7 Secure the acid dispenser tube in the swivel ring holder at the front of the electrode assembly arm. 5.8 Position the dispenser tip even with the bottom of the electrode bulb. 5.9 Place titration beaker with sample under the Electrode(s) and lower the electrode/dispenser assembly into the beaker. 5.10 Turn on the magnetic stirrer (speed 3); make sure bar does not hit electrode(s). 5.11 Depress stand-by/measure switch (#3) so that 13 is off. 5.12 Allow pen to stabilize near 10% of scale (may take a minute or so). 5.13 Lower pen (depress switch #4) and roll chart paper forward so the pen is directly on a heavy line. 5.14 Mark this starting position on the chart. Date Printed: April 18, 1998 Page 2 Of 3 Paper Copies Of This Document Are Uncontrolled & Not Subject To Update. The Controlled Document Resides In File: Lab/Catsampl.doc 059993 DO A dfntial conft 5.15 Depress record/stop switch (#2) so 12 is on. This starts the titration. 5.16 When titration is completed depress record/stop switch (#2) so that 12 is off and 13 is on. (pen should be up and return to center position.) 5.17 Raise electrode/dispenser assembly above titration beaker. 5.18 Push refill switch on titration stand to refill buret. 5.19 Rinse electrodes in the 5 step procedure. 5.20 Place the electrode(s) in the ph 7 buffer solution. 5.21 To determine the results of the titration refer to the calculations section (page b-2) of the potentiograph e 536 manual. 6.0 Revisions: Revision No. 1 02-19-93 Changed 642.5.5 to read: draw up 10.0 ml sample and put into a clean titration beaker containing a stirring bar. Changed: 642.5.7, 642.5.8, 948.5.9 & 642.5.17 took out pipette and inserted dispenser. Revision No. 2 12-21-94 Yearly Review Revision No. 3 03-29-95 Deleted the letter (X) in 5.9 Revision No. 4 04-27-95 Deleted 3.1 and 3.2 .Added safety note 3.1 "Rubber gloves recommended not required" Revision No. 5 03-13-98 Deleted 2.1 Modified new 2.1 and 5.3 Dale Printed: April 18, 1998 Paper Copies Of This Document Are Uncontrolled & Not Subject To Update. Page 3 Of 3 The Controlled Document Resides In File: Lab/Catsampl.doc DO A 059994 CONFIDENTIAL