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Trial Number 18

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 concentration for bathroom cleaning (9%). 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 cleaning solutions had little difficulty with SSL Soil 1 on all three substrates. The table below lists the amount of soil added and removed.

Table 1. Soil Removal

Substrate Initial wt Final wt % Removed Overall Ave
Fiberglass 0.2695 -0.0048 101.78  
  0.2892 -0.0047 101.63  
  0.2635 -0.0053 102.01 101.81
Chrome 0.1396 0.0012 99.14  
  0.1080 0.0019 98.24  
  0.0859 0.0019 97.79 98.39
Ceramic 0.1162 0.0001 99.91  
  0.0922 0.0000 100.00  
  0.0705 0.0000 100.00 99.97

Success Rating:

A follow up test, usually based on company input.


The overall efficiency for the bathroom cleaner, GroutSafe, was 100.06, passing the cut off of 85%.  The glass cleaner will be tested next on SSL Soil 2.

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