Trial Purpose:
To test the effectiveness of The Pink Stuff on ceramic, painted steel, plastic and stainless steel substrates.
Date Run:
09/03/2021Experiment Procedure:
Twenty-four pre-weighed coupons, three of each substrate per cleaner, were soiled with a gram of Hucker's soil (Creamy Peanut Butter 8.8%, Salted Butter 8.8%, Wheat gluten 8.8%, Egg Yolk 8.8%, Evaporated milk 13.5%, DI water 44.2%, Printer's ink with boiled linseed oil 0.9%, India Ink 3.5%, Saline Solution 2.7%) distributed onto each coupon using a swab. Dirty weights were recorded after the coupons had dried for 24 hours at room temperature (68° F). Three coupons of the same substrate were aligned into a Single Line Washing Unit (SLW) with Wypall X60 attached to the cleaning sled. The Wypall X60 reinforced wipe along with the coupons were all sprayed twice times with water after a small amount of cleaner was added to each coupon, and then allowed to soak for 30 seconds. Afterward, the SLW was activated, and the coupons were cleaned for 20 cycles. the Wypall was removed and a clean one was added to the sled. The Wypall and the coupons were sprayed once and were cleaned for an additional 20 cycles. Cleaned coupons dried overnight at room temperature before the final weights were recorded.
Trial Results:
Soft Scrub had an effectiveness of over 99% removal for all four substrates. The Pink Stuff had 99% removal for ceramic and painted metal and had a 95% removal for plastic. The effectiveness for stainless steel was lower at 83% removal.
| Cleaner | Substrate | Initial wt. of Cont. | Final wt. of Cont | Average | Combined Average |
| Soft Scrub | Ceramic | 0.2145 | 0.0004 | 99.81 | 100.45 |
| 0.2389 | -0.0047 | 101.97 | |||
| 0.2116 | 0.0009 | 99.57 | |||
| Painted Steel | 0.1980 | 0.0048 | 97.58 | 98.90 | |
| 0.1956 | 0.0010 | 99.49 | |||
| 0.1882 | 0.0007 | 99.63 | |||
| Plastic | 0.2070 | 0.0051 | 97.54 | 102.09 | |
| 0.1821 | 0.0013 | 99.29 | |||
| 0.0941 | -0.0089 | 109.46 | |||
| Stainless Steel | 0.2827 | 0.0071 | 97.49 | 98.85 | |
| 0.2657 | 0.0020 | 99.25 | |||
| 0.2787 | 0.0005 | 99.82 | |||
| The Pink Stuff | Ceramic | 0.1869 | 0.0022 | 98.82 | 98.85 |
| 0.2172 | -0.0004 | 100.18 | |||
| 0.0769 | 0.0019 | 97.53 | |||
| Painted Steel | 0.2470 | 0.0008 | 99.68 | 98.71 | |
| 0.2503 | 0.0081 | 96.76 | |||
| 0.2176 | 0.0007 | 99.68 | |||
| Plastic | 0.2277 | 0.0092 | 95.96 | 94.95 | |
| 0.2102 | 0.0035 | 98.33 | |||
| 0.2469 | 0.0233 | 90.56 | |||
| Stainless Steel | 0.1906 | 0.0353 | 81.48 | 82.86 | |
| 0.1973 | 0.0545 | 72.38 | |||
| 0.2157 | 0.0114 | 94.71 |
Success Rating:
Preliminary compatibility tests on substrate coupons encouraging for at least one cleaning chemistry. More in-depth laboratory testing necessary.Conclusion:
The Pink Stuff performed comparably to soft scrub for ceramic, painted metal, and plastic, however, it had lower removal effectiveness for stainless steel.
