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Trial Number 15

Trial Purpose:

To evaluate supplied products on three substrates for bathroom soap scum removal.

Date Run:

08/16/2005

Experiment Procedure:

Two supplied cleaning product were diluted to vendor recommended concentrations for bathroom cleaning. The product was diluted with DI water.

Six preweighed fiberglass, six ceramic and six chrome coupons were coated with SSL Soil 1 (Bathroom soap scum: Vaseline Dry Skin Lotion 21.4%, Dial Clean Rinsing Body Wash 14.3%, Market Basket Shampoo & Conditioner (Pert) 28.6%, Soft Soap Natural Liquid hand soap 21.4%, Coast Deodorant bar soap 7.2% and Water 7.1%) using a hand held 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 Professional Painter's Rag 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:

Both products were not successful in removing SSL Soil 1 - Bathroom Soil from ceramic, fiberglass and chrome coupons. Table 1 lists the amount of soil applied and removed for each substrate and coupon.

Table 1. Soil Application and Removal

Cleaner Initial wt Final wt % Removed
DFC 23 Ceramic 0.2137 0.0616 71.17
  0.2605 0.0888 65.91
  0.3234 0.0432 86.64
DFC 5 Ceramic 0.2299 0.0501 78.21
  0.1797 0.0460 74.40
  0.2459 0.0397 83.86
DFC 23 Fiberglass 0.1999 0.0389 80.54
  0.2308 0.0498 78.42
  0.2886 0.0379 86.87
DFC 5 Fiberglass 0.2560 0.0528 79.38
  0.2588 0.0424 83.62
  0.3541 0.0337 90.48
DFC 23 Chrome 0.1698 0.0086 94.94
  0.1032 0.0081 92.15
  0.1130 0.0086 92.39
DFC 5 Chrome 0.1059 0.0158 85.08
  0.2021 0.0185 90.85
  0.2014 0.0185 90.81

Success Rating:

A follow up test, usually based on company input.

Conclusion:

Both products will be retested at new dilutions based on vendor feed back to cleaning results obtained.

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