The supplied cleaning product was used at the new recommended concentration (5%). Preweighed ceramic were coated with Hucker's Soil Formulation (Jif Creamy Peanut Butter 9.2%, Salted Butter 9.2%, Arrowhead Mills stone ground wheat flour 9.2%, Egg Yolk 9.2%, Evaporated milk 13.8%, Distilled water 45.8%, Printer's ink with boiled linseed oil 0.9%, Shaws saline solution 2.7%) using a handheld swab and allowed to dry for 24 hours at room temperature. The contaminated coupons were weighed again to determine the amount of soil added.
Three coupons were placed into a Gardner Straight Line Washability unit. A Kimberly Clark Reinforced paper towel was attached to the cleaning sled and soaked with 5-7 sprays of cleaning solutions. Each coupon was sprayed 7-10 times with the same cleaning solution. The solution was allowed to penetrate for 30 seconds followed by cleaning in the SLW unit for 20 cycles (~33 seconds). At the end of the cleaning, coupons were wiped once with a dry paper towel. Final weights were recorded, and efficiencies were calculated and recorded.
The retesting of the supplied product at the higher dilution resulted in the product removing over 85% of the Hucker's soil using manual cleaning. The table lists the amount of soil added, the amount remaining and the efficiency for each coupon cleaned.
| Cleaner
|
Initial wt
|
Final wt
|
% Removed
|
| CleanLine 5% ceramic
|
0.0626
|
0.0084
|
86.58
|
|
|
0.2523
|
0.0145
|
94.25
|
|
|
0.2711
|
0.0181
|
93.32
|
| Cleanline 5% painted steel
|
0.4213
|
0.0458
|
89.13
|
|
|
0.1195
|
0.0425
|
64.44
|
|
|
0.1155
|
0.0395
|
65.80
|
| Cleanline 5% plastic
|
0.0830
|
0.0045
|
94.58
|
|
|
0.0505
|
0.0014
|
97.23
|
|
|
0.0597
|
0.0121
|
79.73
|
| Formula 409 Ceramic
|
0.1094
|
0.0095
|
91.32
|
|
|
0.0722
|
0.0039
|
94.60
|
|
|
0.0659
|
0.0033
|
94.99
|
| Formula 409 Painted steel
|
0.0770
|
0.0075
|
90.26
|
|
|
0.0879
|
0.0047
|
94.65
|
|
|
0.0645
|
0.0043
|
93.33
|
| Formula 409 plastic
|
0.0466
|
0.0034
|
92.70
|
|
|
0.1058
|
0.0002
|
99.81
|
|
|
0.0557
|
0.0018
|
96.77
|