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Trial Number 144

Trial Purpose:

Laboratory evaluations of alternative cleaning products

Date Run:

01/15/2002

Experiment Procedure:

Cleaning: 5 min Immersion cleaning with stirbar agitation @ 120 F
Rinsing: 1/2 min, manual, in 102 F water (tap)
Drying : 1 min with heatgun @ 500F
Contaminant: ITW, Dykem Corp, Ink, Steel Blue - DX - 100
CAS#'s 64175, 12386

Trial Results:

None of these cleaners were effective on the dried ink contaminant. The LF 2100 was especially ineffective, it seems to react with the ink and deposit an oily or greasy substance onto the coupon, increasing its weight dramatically. LF:  This cleaner reacted w/ the ink, changing its color from deep blue-green to purple greasy/oily film. After cleaning the ink never dried, it stayed tacky or wet.  Gravimetric analysis showed there was a significant increase in weight.

Success Rating:

Preliminary compatibility tests on substrate coupons encouraging for at least one cleaning chemistry. More in-depth laboratory testing necessary.

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