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Trial Number 35

Trial Purpose:

To run a second cleaning cycle for one of the supplied products for bathroom cleaning.

Date Run:

07/14/2006

Experiment Procedure:

One supplied cleaning products was used at full strength to clean the coupons previously contaminated 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%) .

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:

The table lists the amount of soil added, the amount remaining and the percent removed for each coupon cleaned. The values from both rounds of cleaning are listed.

Cleaner Initial wt Final wt % Removed
Cogent Sodiumhypochlorite Ceramic 0.1586 0.0497 68.66
  0.1879 0.0094 95.00
  0.3361 0.0416 87.62
Round 2 0.1586 0.0237 85.06
  0.1879 0.0084 95.53
  0.3361 0.0350 89.59
Cogent Sodium hypochlorite Chrome 0.4488 0.0382 91.49
  0.3557 0.0320 91.00
  0.3266 0.0311 90.48
Round 2 0.4488 0.0216 95.19
  0.3557 0.0203 94.29
  0.3266 0.0168 94.86
Cogent Sodiumhypochlorite Fiberglass 0.2047 0.0127 93.80
  0.4084 0.0155 96.20
  0.2858 0.0152 94.68
Round 2 0.2047 0.0003 99.85
  0.4084 0.0004 99.90
  0.2858 0.0017 99.41

Success Rating:

A follow up test, usually based on company input.

Conclusion:

The second cycle of cleaning improved the efficiency of the Sodium hypochlorite 0.02% solution. The effectiveness increased to 94.85% from 89.88%.

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