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Standard Operating Procedure: <br /> Cleaning and Calibration of PH Probes <br /> Document number: Rev. Leve date: Author/Approver Page 1 <br /> l: Eff <br /> SOP 2003-0001 A 11/09/05 Wayne Mannor-/- Bill Palmer <br /> Purpose: The purpose of this procedure is to ensure the standardization of the <br /> cleaning and calibration of the PH probes in the Waste Treatment area. <br /> Scope: This procedure covers only the cleaning and calibration of the <br /> aforementioned probes. Emergency procedures are covered in document <br /> 2003-0020. <br /> PROCEDURE: <br /> REQUIRED SUPPLIES: <br /> 1. PH 4, PH 7 and PH 10 Buffers <br /> 2. Distilled Water <br /> 3. Acid Brush <br /> - 4. #0 Slotted Screw Driver <br /> 5. 3 Tupperware containers for buffer <br /> (See Image 1) <br /> Ima e 1 <br /> PROCEDURE: <br /> CLEANING AND CALIBRATION OF CITY PH The Pickling/Waste Treatment Operator will: <br /> PROBE: <br /> ^i > 1. Remove the PH probe from the City Pit <br /> 1 located near northeast corner of tank 2. <br /> (See Image 2) <br /> ® 2. Fill one of the 3 Tupperware containers with <br /> PH Buffer 4, one with PH Buffer 7 and one <br /> with PH Buffer 10. <br /> City Probe <br /> Clean the probe with distilled water and an <br /> acid brush to remove any impurities. Ensure <br /> the bulb is clear and does not have a film over <br /> it. <br /> Image 2 (Continued on next page) <br />