Some one asked me tonight if I can explain:
"Why the test procedures for TT states that testing should be done immediately after taking a sample?
When taking a sample and holding it for 24 hours, (a completely filled sample bottle, well-sealed) will result in a tested value reduction of anywhere from 10 to 40%.
Resampling and retesting the subject closed loop 24 hours later shows little or no result reduction.
One of AWT’s raw material suppliers prepared 10 ppm samples in distilled water, both glass and plastic containers, last year at the convention, both well sealed and not well sealed, and observed no test value reduction at 24 and 48 hours."
My thought is:
Tolyltriazole is also sold as a Ultraviolet Absorber which no doubt breaks the Nitrogen - Nitrogen bond.
Thus the test result over time would degrade, but not in the closed loop.
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