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Trial Number 8

Client Number 490

Project Number 1

Trial Purpose:

To evaluate Crystal Simple Green at 10% solution for new pre-soiled samples.

Date Run:

04/13/2022

Experiment Procedure:

The pre-soiled parts were weighed for dirty weights. The Crystal Simple Green was heated to 140 F and placed in the ultrasonics tank. The parts were then placed in the ultrasonics tank for 10 minutes and 5 minutes, one two parts for each timeframe. The coupons were taken out and left to dry; once the coupons were dry the clean weights were taken. After clean weights, the coupons were wiped down and weighed for initial weights. Visual observations were also noted. 

Trial Results:

Crystal Simple Green at a 10% concentration is effective on these substrates for 5- and 10-minute timeframes. At 10 minutes the coupons were clean with minor spotting left on the surface. At 5 minutes the coupons also had minor spotting. Steel was a slight outlier for the 10-minute duration while it did well at 5 minutes. This difference may be due to oil that had not dripped off or removed properly for the 10-minute steel part.

5 Minute Cleaning

Substrate  Duration   Initial wt. of cont.  Final wt. of cont.  %Cont Removed 
Aluminum  5 min  0.0216  0.0014  93.52 
Steel  0.0362  0.0014  96.13 
Stainless Steel   0.0138  0.0008  94.20 

10 Minute Cleaning

Substrate  Duration   Initial wt. of cont.  Final wt. of cont.  %Cont Removed 
Aluminum  10 min  0.0512  0.0002  99.61 
Steel  0.0337  0.0065  80.71 
Stainless Steel   0.1422  0.0081  94.30 

Success Rating:

Results successful using TACT (time, agitation, concentration, and temperature, as well as rinsing and drying) and/or other cleaning chemistries examined.

Conclusion:

Results were effective but not as effective as previous trials. Next trial will increase concentration and focus on lowering the cleaning duration.

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