The supplied cleaning product was used at the requested concentration and a second product, selected by the lab, was diluted with DI water to vendor recommended dilution for bathroom cleaning.
Preweighed chrome coupons were coated with SSL Soil 1 (Bathroom soap scum: All-in-one shampoo and conditioner 28.6%, Dry skin lotion 21.4%, Liquid hand soap 21.4%, Liquid body wash 14.3%, Deodorant bar soap 7.2% and water 7.1%.) 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. Efficiencies were calculated and recorded.
The industry standard product was effective in removing the bathroom soil with a manual wiping action. The supplied product was effective on 2 of the three substrates. The table lists the amount of soil initially added and the amount remaining after cleaning and the product efficiency for each coupon cleaned.
| Cleaner
|
Initial wt
|
Final wt
|
% Removed
|
| H2O2-ceramic
|
0.2287
|
0.0590
|
74.20
|
|
|
0.1961
|
0.0514
|
73.79
|
|
|
0.2282
|
0.0425
|
81.38
|
| H2O2-chrome
|
0.0950
|
0.0072
|
92.42
|
|
|
0.2121
|
0.0331
|
84.39
|
|
|
0.1404
|
0.0162
|
88.46
|
| H2O2-fiberglass
|
0.0776
|
0.0068
|
91.24
|
|
|
0.1270
|
0.0202
|
84.09
|
|
|
0.2257
|
0.0444
|
80.33
|
| Heavy Duty-ceramic
|
0.2088
|
0.0431
|
79.36
|
|
|
0.1525
|
0.0402
|
73.64
|
|
|
0.2057
|
0.0519
|
74.77
|
| Heavy Duty-chrome
|
0.1548
|
0.0201
|
87.02
|
|
|
0.1024
|
0.0152
|
85.16
|
|
|
0.1142
|
0.0193
|
83.10
|
| Heavy Duty-fiberglass
|
0.1695
|
0.0085
|
94.99
|
|
|
0.1109
|
0.0064
|
94.23
|
|
|
0.2153
|
0.0150
|
93.03
|