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Trial Number 1

Trial Purpose:

To evaluate supplied cleaners for bathroom soil removal on chrome coupons.

Date Run:


Experiment Procedure:

Four supplied cleaning products were diluted to vendor recommended concentrations for bathroom cleaning. Each product was diluted with DI water. Twelve preweighed 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:

All four products were successful in removing SSL Soil 1 from chrome coupons. Table 1 lists the amount of soil applied and removed.
Table 1. Soil Application and Removal

Cleaner Initial wt Final wt % Removed
H2Orange2 0.1021 0.0020 98.04
  0.0669 0.0028 95.81
  0.0913 0.0025 97.26
Super H2O2 0.0624 0.0062 90.06
  0.1198 0.0118 90.15
  0.0540 0.0039 92.78
Free Fall 0.0819 0.0022 97.31
  0.0685 0.0041 94.01
  0.0543 0.0028 94.84
Ecogent 0.0524 0.0033 93.70
  0.0565 0.0033 94.16
  0.0747 0.0030 95.98

Success Rating:

A follow up test, usually based on company input.


The same four product concentrations will be used on a third substrate, glazed ceramic, with the same soil.

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