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Pack-in-Process Inspection. - TM-10-1670-271-23P_47
Salt-Water Contamination Test - TM-10-1670-271-23P_49

TM-10-1670-271-23P Parachute Personnel Type: 35-Foot Diameter T-10B Troop Back Parachute Assembly NSN 1670-00-091-0720 Manual
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ARMY TM 10-1670-271-23&P AIR FORCE TO 14D1-2-464-2 MARINE CORPS TM 01136B-23&P/1 2-14.  Acidity Test. This task covers: Acidity test Tools: Personnel Required: Packing Paddle, Item 20, Appendix B 43E(10) Parachute Rigger Materials/Parts: Equipment Condition: Medicine Dropper, Item 26, Appendix D Unpacked. Three-Color pH Paper, Item 29, Appendix D Layout on packing table or other suitable area. Spool with Color Chart, Item 39, Appendix D a. Fabric and Webbing Acidity Test.  Components and parts that are constructed from fabric or webbing will  be  administered  an  acidity  test  whenever  the  material  is  discolored,  stained,  or  the  presence  of  acid  is suspected.    The  acidity  test  will  be  accomplished  using  approved  colorimetric  pH  paper,  strip  type,  with  the color comparison chart on the side of each manufacturer's dispenser, to determine the acidity level in steps of 1 pH on a fabric or webbing item. b.  Test Procedure.  Perform test as follows: (1)  Using a medicine dropper or equivalent type applicator, place one to two drops of water on the item in the intended test area.  If water drops do not penetrate the material, gently rub the moistened area with a flat side of a clean metal packing paddle. (2)  Tear a suitable length of colorimetric pH paper from dispenser, place the piece of pH paper on the wetted area and press the full surface of the paper against the material with a flat side of the packing paddle used in step (1) above insure the pH paper becomes thoroughly wet. (3)  Using the color comparison chart enclosed in the dispenser, compare the color of the moistened pH paper strip with the pH 1-3 color scale.  If the color of the pH paper matches the numerical pH 1-3, the acidity present in the material exceeds the acceptable level and the item is to be removed from use and condemned and processed for disposition. (4)  After a packing paddle has been used as outlined in steps (1) and (2), above, thoroughly rinse and dry the paddle before using the paddle for any other functions. 2-24







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