Appendix C. Method for Swab pH TestC3. RequirementsC3.1. Personnel: The procedure shall be executed by personnel who have been trained for this procedure.C3.2. Safety C3.2.1. All sections of this procedure require that all participants in this process are wearing all required PPE.C3.2.2. All materials used in this procedure, i.e., pH paper, swabs, absorbent wipes, etc., that may be chemically contaminated shall be disposed of in a properly labeled manner according to local practices.C3.2.3. If applicable, Lock Out Tag Out procedures shall be followed to eliminate all hazardous forms of energy when working on an installed system. This includes electrical, mechanical and chemical sources that have the potential for causing injury or harm to personnel or equipment.C3.3. Tools/Materials C3.3.1. Safety GlassesC3.3.2. Chemically resistant glovesC3.3.3. pH test strips with the range of 0 to 14C3.3.4. Cleanroom swabsC3.3.5. Type II grade of reagent water per ASTM D1193 with resistivity no less than 1 MOhmC3.3.6. Cleanroom wipes as described in Section 3.1.4C3.3.7. Reagent grade isopropyl alcoholC3.3.8. Cleanroom gloves as described in Section 3.1.4.