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Trial #1

Trial #1

To evaluate six cleaning products for Mystery Oil (Soluble Oil #35) and Rustlick 50/50 removal from copper coupons.

2019

27

2

0

0

Coupon

07/18/2019

15.00

Immersion/Soak

Julie Nguyen
Nicole Kebler

Copper

Lubricating/Lapping Oils
Oil

Agitated tap water

Air dry

Gravimetric
Visual

Six pre-weighed copper coupons, three for each contaminant, was used for each cleaner. The coupons were soiled halfway on one side using a hand-held swab before dirty weights were recorded. Dilutions and temperature for each cleaner was based on vendor recommendations. Coupons of the same contaminant were immersed completely for 15 minutes, and visual observations were recorded every five minutes. Cleaned coupons were rinsed in heated (95o F) tap water for five minutes, air dried for five minutes with a heat gun, and then final weights were recorded.

 

Cleaner Soil Initial wt. of cont. Final wt. cont. % Cont. Removed Average Overall Average
1 Mystery Oil 0.1195 0.0008 99.33 98.24 92.34
0.1480 0.0057 96.15
0.1476 0.0011 99.25
Rustlick 50/50 0.1407 0.0199 85.86 86.43
0.2062 0.0253 87.73
0.1359 0.0194 85.72
2 Mystery Oil 0.1403 0.0073 94780 95.50 88.43
0.1501 0.0065 95.67
0.1558 0.0062 96.02
Rustlick 50/50 0.2060 0.0290 85.92 81.37
0.1576 0.0323 79.50
0.1665 0.0355 78.68
3 Mystery Oil 0.1395 0.0072 94.84 96.22 90.19
0.1227 0.0040 96.74
0.0992 0.0029 97.08
Rustlick 50/50 0.1946 0.0322 83.45 84.16
0.2079 0.0363 82.54
0.1865 0.0252 86.49
4 Mystery Oil 0.1094 0.0015 98.63 96.26 90.54
0.1263 0.0019 98.50
0.1581 0.0132 91.65
Rustlick 50/50 0.2087 0.0315 84.91 84.81
0.1429 0.0250 82.50
0.1711 0.0222 87.02
5 Mystery Oil 0.1375 0.0017 98.76 99.33 89.52
0.2621 0.0007 99.73
0.1214 0.0006 99.50
Rustlick 50/50 0.2060 0.0520 74.76 79.71
0.2771 0.0574 79.29
0.1959 0.0292 85.09
6 Mystery Oil 0.0899 0.0071 92.10 94.03 91.01
0.0988 0.0043 95.65
0.0656 0.0037 94.36
Rustlick 50/50 0.3382 0.0307 90.92 87.97
0.2095 0.0310 85.20
0.2229 0.0272 87.80

Visual Observations

Contaminant: Mystery Oil

Cleaner 5 Mins 10 Mins 15 Mins Rinse
1

- soil immediately turned pale white

- thin white rim at top of water

- water turned opaque white

- cloudy dilution

- rim at top getting thicker

- cloudy dilution

- thick white rim at top of water

 

 

- thin white rim

- coupon looks clean
2

 - soil immediately turned pale white

- thin white rim at top of water

 - white streaks visible in dilution

- clear solution

- think white rim

 

- visible white streaks in dilution

- coupon looks clean

 
3

- soil immediately turned pale white

- thin white rim at top of water

- water turned cloudy

- cloudy white rim

- soil floating in water

 - thick white rim at top of water

- very faint white streaks on coupon

- coupon looks clean
4

- soil immediately turned pale white

- white rim forming at top of water

- water turned cloudy

- cloudy white rim

- soil floating in water

 

 - thick white rim at top of water

- very faint white film on coupon

- coupon looks clean
5

- soil immediately turned pale white

- white rim forming at top of water

- water turned cloudy

- cloudy white rim

- soil floating in water

 

 

 - thick white rim at top of water

- very thin white rim

- coupon looks clean
6

- soil immediately turned pale white

- soil moving to top of water

- white rim at top of water

- thin white film on coupon

- faint white streaks in water

 

- very faint white film visible in water

- coupon looks clean

Contaminant: Rustlick 50/50

Cleaner 5 Mins 10 Mins 15 Mins Rinse
1

- cloudy white dilution

- thin blue rim at top of water

- no odor

- less cloudy

- soil coming off coupon

- layer of soil at top of water

- thick rim at top of water

- no longer cloudy

- clear with soil removed

- soil residue remaining

- blue streaks

 
2

 - immediate thin white swirls on surface

- clear liquid

- soil moving (white swirls)

- soil still moving

- soil is coming off coupon

- water is opaque

- no longer moving

- soil looks to be removed

 

- soil still on coupon

- blue residue remaining

 
3

- immediate change in soil color (bright blue to pale blue)

- blue streaks in visible

 - blue rim forming at top of water - soil still visible on coupon

- small blue chunks visible

- blue streaks

- some soil remaining
4

- immediate change in soil color (bright blue to pale blue)

- very thin blue rim at top of water

- dilution getting cloudy

- blue rim getting thicker

- blue streaks

- cloudy dilution

- light blue streaks

- soil still visible on coupon

 
5

- immediate change in soil color (bright blue to pale blue)

- very thin blue rim at top of water

- lots of blue streaks visible along coupon

- blue rim getting thicker

 

 - increased blue streaks

- blue streaks still visible

- soil still remaining on coupon
6

- small speckles came off coupon

- change in soil color (bright blue to pale blue)

- blue streaks

- line of soil on surfaces of water

- blue streaks

- soil clumping on coupon

- increased blue streaks

- blue rim at top of water

- water turned light blue

- tiny chunks visible floating

- light blue streaks

               

All six cleaners were effective at removing the Mystery Oil from copper coupons. Next step would be to add agitation to the heated immersion using a stir bar to evaluate if it improves removal of Rustlick 50/50 from copper coupons. 

No relation

Name Class Section
Document Evaluation #0 Evaluation 3
Document Evaluation #1 Evaluation 3
Document Evaluation #2 Evaluation 3
Document Evaluation #3 Evaluation 3
Document Evaluation #4 Evaluation 3
Document Evaluation #5 Evaluation 3
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