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Trial Number 0

Trial Purpose:

To evaluate the effectiveness of six cleaning products for removing Mystery Oil and Rustlick 50/50 from copper coupons.

Date Run:

07/02/2019

Experiment Procedure:

Eighteen aluminum coupons, three for each cleaner and soil, were weighed before soiling halfway on one side using a hand-held swab. Dirty weights were recorded before placing three coupons at a time into a 250 mL beaker with a diluted cleaning solution. Coupons were immersed completely for 15 minutes with written observations being made every five minutes. A rinse step was added with heated water for five minutes before drying with an air gun for five minutes. A white glove test was performed using a clean swab to look for residue and final weights were taken.

Trial Results:

Cleaner Contaminant Initial wt. of cont. Final wt. cont. % Cont. Removed Average
1 Mystery Oil 0.0574 0.0203 64.63415 88.21
0.0997 0 100
0.1299 0 100
Rustlick 50/50 0.2147 0.0137 93.619 93.94
0.2042 0.0123 93.97649
0.2534 0.0146 94.23836
2 Mystery Oil 0.1158 0.001 99.13644 99.14
0.1328 0.0005 99.62349
0.1356 0.0018 98.67257
Rustlick 50/50 0.2543 0.0172 93.23634 93.85
0.2886 0.0174 93.97089
0.2349 0.0133 94.33802
3 Mystery Oil 0.1414 0.0016 98.86846 97.69
0.0988 0.0004 99.59514
0.1276 0.0069 94.59248
Rustlick 50/50 0.2532 0.0122 95.18167 94.75
0.2762 0.0148 94.64156
0.2729 0.0152 94.43019
4 Mystery Oil 0.087 0.0096 88.96552 89.60
0.1091 0.0079 92.75894
0.1678 0.0217 87.06794
Rustlick 50/50 0.0808 0.0038 95.29703 93.69
0.077 0.0073 90.51948
0.08 0.0038 95.25
5 Mystery Oil 0.089 0.0017 98.08989 96.85
0.1012 0.0061 93.97233
0.0858 0.0013 98.48485
Rustlick 50/50 0.0888 0.0092 89.63964 87.04
0.1495 0.0202 86.48829
0.094 0.0141 85
6 Mystery Oil 0.1162 0.0013 98.88124 91.91
0.0493 0.0102 79.31034
0.114 0.0028 97.54386
Rustlick 50/50 0.231 0.0402 82.5974 85.89
0.2416 0.0279 88.45199
0.2444 0.0328 86.57938

Visual Observations for Mystery Oil Coupons:

Cleaner 5 Mins 10 Mins 15 Mins Rinse
1

- soil immediately turned pale white

- soil floating to top of water

- white rim forming at top of water

- soil smoothly spread on coupon

- soil seems to all float to the top of the water

 

 

- very thin white rim at top of water

-thin white film on coupon

2

 - soil immediately turned pale white

- water turned slightly white

- white rim forming at top of the water

- soil smoothly spread on coupon

- water slightly turning white

- soil seems to all float to the top of the water

 

- very light streaks on coupon

 

3

- soil immediately turned pale white

- soil floating off of coupon, to the top of water

- thick white rim at top of water

- soil seems to all float to the top of the water

- remaining white layer of soil on coupon

- thin white rim on top coupon
4

- soil immediately turned pale white

- soil coming off coupon, floating to top of the water

- thin white rim forming at top of water

- water slightly cloudy/white

- white rim at top of water

- visible white streaks along coupon

- water slightly cloudy

- white streaks in water

5

- soil immediately turned pale white

- water is turning light white

- thick + bubbly white rim at top of water

 

 

- soil seems to all float to the top of the water - very faint white film on coupon
6 - soil turning slight white

- very thin white rim forming at top of water

- visible white streaks along coupon

- think white rim at top of water

- visible white streaks along coupon

- water turning cloudy

- white rim at top of water

Visual Observations for Rustlick 50/50 Oil Coupons:

Cleaner 5 Mins 10 Mins 15 Mins Rinse
1

- streaks of soil visible moving down coupon

- soil detached, floating in front of coupon

- opaque blue rim forming at top of water

- soil in the middle coupon seems to be removing

- coupon looks cleaner

- some soil still visible on coupon

 

 

- blue tint in water
2

 -little to no soil change

- water getting cloudy

- opaque blue rim floating at top of water

- seems to be removing only the thin layers of soil, not thicker layer

- coupon looks cleaner

- some soil still visible on coupon

- slight visible clouds in water

- water is blue

- effective but little chunks of soil still remain on coupon

3

- soil slowly moving to bottom of coupon

- water getting cloudy

- opaque blue rim floating at top of water

- blue rim at top of water getting thicker

- increased streaks visible along coupon

- coupon looks cleaner

- looks like soil is floating in front of coupon

- very thin rim forming at top

- slight clouds in water

- looks effective

- water is blue at top (not bottom)

4

- immediate change in soil color (lighter)

- streaks visible on coupon

- water getting slightly cloudy

- increased streaks of soil floating along the coupon - blue rim forming on top of water - soil still remaining on coupon
5

- immediate change in soil color (lighter)

- water getting cloudy

- streaks visible on coupon

- blue rim forming at top of the water

- increased streaks of soil floating in water

- water getting cloudy - some soil still remaining on coupon
6

- soil breaking into chunks

- soil chunks are floating

- blue rim forming at the top of water

- water got cloudy

- chunks of soil floating in water

- thin layer of soil still on coupon

Success Rating:

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

Conclusion:

All six cleaners were effective at removing Rustlick 50/50 and Mystery Oil from copper coupons.

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