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Trial Number 2

Trial Purpose:

To evaluate three supplied products for all purpose cleaning following GS 37 requirements

Date Run:

07/11/2008

Experiment Procedure:

Two of three supplied cleaning products were diluted with DI water to vendor recommended concentration for all purpose cleaning (32:1 and 128:1). The third product was prepared following the specified procedure - oxygenating cold tap water for about 10 minutes.

Preweighed ceramic, plastic G-10 and painted steel coupons 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 Wypal 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 cleaning unit was run 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.

Trial Results:

All three products were effective at removing the glass soap scum from the three surfaces using manual wiping. The Lotus Sanitizing System resulted in the highest efficiency, removing more than 90% of the soap film. The table lists the amount of soil added, the amount remaining after cleaning and the calculated efficiency for each coupon cleaned.

Substrate Cleaner Initial wt Final wt % Removed
Ceramic Lotus 0.1193 0.0098 91.79
    0.0842 0.0072 91.45
    0.0382 0.0094 75.39
  Pleascent 0.1373 0.0073 94.68
    0.1250 0.0152 87.84
    0.0744 0.0019 97.45
  Compass 0.2517 0.0084 96.66
    0.1124 0.0111 90.12
    0.0937 0.0062 93.38
Painted steel Lotus 0.0760 0.0020 97.37
    0.0554 0.0021 96.21
    0.1530 0.0071 95.36
  Pleascent 0.1350 0.0156 88.44
    0.4568 0.0224 95.10
    0.1672 0.0220 86.84
  Compass 0.1943 0.0029 98.51
    0.3781 0.0067 98.23
    0.0902 0.0028 96.90
Plastic Lotus 0.0665 0.0061 90.83
    0.0547 0.0068 87.57
    0.1252 0.0048 96.17
  Pleascent 0.1039 0.0041 96.05
    0.0599 0.0056 90.65
    0.0798 0.0046 94.24
  Compass 0.0690 0.0011 98.41
    0.0821 0.0044 94.64
    0.0417 0.0012 97.12
Composite tile Lotus 0.1330 0.0048 96.39
    0.0885 0.0135 84.75
    0.0282 0.0133 52.84
  Pleascent 0.0468 0.0120 74.36
    0.2268 0.0135 94.05
    0.1569 0.0056 96.43
  Compass 0.1016 0.0153 84.94
    1.0722 0.0304 97.16
    0.1332 0.0219 83.56

Success Rating:

A follow up test, usually based on company input.

Conclusion:

The Lotus Sanitizing System was found to be effective for removing the Hucker's soil from various surfaces using manual wiping. It compared well to the two other cleaning products supplied for testing.

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