Overview
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Sample gas tubing (PN A.571061017) is recommended. It should be chemi-
cally cleaned and passivated, thermocouple grade 316 stainless steel. Cop-
per, brass, and polycarbonate are not to be used. Most plastics or elasto-
mer materials are unsatisfactory because of their relatively high moisture
permeability.
All tubing should be minimum length; [3 m (10 ft)] and ID; 3.2 mm [0.128
in. (1/8 in.)] OD is recommended. Use Teflon® Fluorocarbon tape or
American Sealants Co. Locktite® 545 on threaded connections. Do not
use pipe, rubber, or similar cements. The sample system should be leak-
checked periodically.
*Reg. U.S. Pat. & T.M. Off.
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