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Trial Number 0

Client Number 135

Project Number 1

Trial Purpose:

To evaluate cleaning effectiveness for several contaminant types using client supplied samples.

Date Run:

07/05/2000

Experiment Procedure:

Table 1 lists the various coupon materials used in this evaluation
Table 1. Substrates Used

Substrate ID# Code
aluminum 202-7075 T-6 AL
brass 202-260 BR
Cu/Ni 202-715 CN
stainless st. 202-17-4 HR68 SS

Table 2 shows the contaminants and the associated CAS#s applied to the coupons.
Table 2. Contaminants Used

Contaminant CAS# Code
lubricant, 423 64742-57-0, 64742-62-7, 8052-42-4 LU
grease, KSL-111 64742-47-8 GR
oil, Citgo NC400 64741-89-5, 8052-42-4 OI
flux, Ersin 5381   FL

CONTAMINATING PROCESS USED: Coupons coated using hand held swab

Thirty-three preweighed coupons were contaminated with various contaminants based on vendor recommendations and weighed again. Cleaning chemistries were diluted to 5% using DI water in 600 ml beakers. The solutions were heated to 130 F on a hot plate. Three coupons of the same material, with the same contaminant were cleaned in the specified cleaner for 5 minutes using stir-bar agitation. Coupons were rinsed with tap water at 120 F for 30 seconds and dried at room temperature for 2 hours. Once the coupons were dry, the final clean weights were measured and cleaning efficiencies were calculated. Table 3 lists the cleaning products evaluated.
Table 3. Cleaning Products Used
Multiclean 1568
Alukleen 36
Powerwash Clean BCR

Trial Results:

All three cleaners were very successful in removing the oil from the various types of substrates. The Multiclean solution was did not show good cleaning ability on the grease and lubricant. The Alukleen and the Powerwash Clean BCR removed the nearly all of the lubricant and neither were capable of cleaning the flux compound. The Alukleen was also able to remove the grease from the stainless steel coupons. Tables 4, 5 and 6 lists the results for each cleaning solution.

Table 4. Cleaning Results of Multiclean

Multiclean 1568  AL - GR CN - LU SS - OI
Coupon 1 119.05 9.89 99.28
Coupon 2 133.71 7.79 97.98
Coupon 3 206.06 62.2 96.71
Ave 152.94 26.63 97.99
Table 5.  Cleaning Results of Alukleen
Alukleen 36 AL - LU AL - FL SS - OI SS - GR
Coupon 1 88.47 2.75 92.82 98.39
Coupon 2 84.69 12.37 89 99.2
Coupon 3 88.19 3.69 91.75 98.51
Average 87.12 6.27 91.19 98.7
Table 6.  Cleaning Results of Powerwash Clean BCR
Clean BCR AL - LU BR - FL BR - OI SS - OI
Coupon 1 90.96 94.97 100.06 82.48
Coupon 2 91.69 37.59 99.79 86.27
Coupon 3 80.42 24.59 100.25 89.13
Average 87.69 52.38 100.03 85.96

Success Rating:

A follow up test, usually based on company input.

Conclusion:

Two of the cleaners, Alukleen and Powerwash Clean BCR, were found to be effective in removing multiple types of contaminants from a variety of surface materials.

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