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Trial Number 11

Trial Purpose:

To evaluate newly supplied cleaner on SSL Soil 1 on three substrates

Date Run:


Experiment Procedure:

One supplied cleaning product was diluted to vendor recommended concentrations for bathroom cleaning. The product was diluted with DI water. Three preweighed fiberglass, three ceramic and three 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. Photographs were taken.

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 and a second set of photographs were taken. Efficiencies were calculated and recorded.

Trial Results:

The bathroom cleaner had some difficulty removing SSL Soil 1 from the fiberglass coupons. The coupons looked streaky and were sticky to the touch. The soil was successful removed from the other two substrates, ceramic & chrome.

Table 1. Soil Removal.

Cleaner Initial wt Final wt % Removed
FG Soil1 0.0405 0.0090 77.78
  0.0182 0.0055 69.78
  0.0340 0.0123 63.82
Ceramic Soil1 0.2910 0.0152 94.78
0.1943 0.0076 96.09
  0.2215 0.0085 96.16
Chrome Soil1 0.1528 0.0124 91.88
0.2567 0.0220 91.43
  0.2865 0.0121 95.78

Success Rating:

A follow up test, usually based on company input.


The overall efficiency for the bathroom cleaner, EnviroCare Washroom Cleaner, was 86.39, passing the cut off of 85%.  The glass cleaner will be tested next on SSL Soil 2.

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