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Trial Number 2

Trial Purpose:

To evaluate two Do-It-Yourself formulation following kit instructions for all purpose cleaning

Date Run:

04/17/2008

Experiment Procedure:

The supplied cleaning products were used at the recommended concentration. Two products were included for comparison and used at its ready to use concentration.

Preweighed ceramic, plastic and steel coupons were coated with Hucker's Soil Formulation (Jif Creamy Peanut Butter 9.2%, Salted Butter 9.2%, Arrowhead Mills stone ground wheat flour 9.2%, Egg Yolk 9.2%, Evaporated milk 13.8%, Distilled water 45.8%, Printer's ink with boiled linseed oil 0.9%, Shaws saline solution 2.7%) 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. AA Wypall X60 reinforced wipe 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 solution was allowed to penetrate for 30 seconds followed by cleaning in the SLW unit for 20 cycles (~33 seconds). Final weights were recorded and efficiencies were calculated and recorded.

Trial Results:

The table lists the amount of soil added, the amount remaining and the efficiency for each coupon cleaned.

Cleaner Initial wt Final wt % Removed
Clorox Green Works All Purpose 0.2485 11.3316 -4460.00
Steel 0.2312 10.1057 -4270.98
  0.2532 -66.2288 26256.71
  -0.0013 49.7681 3828415.38
Plastic 0.1948 49.1130 -25112.01
  0.1948 48.7056 -24902.87
  0.3703 -61.2876 16650.80
Ceramic 0.1704 -57.5792 33890.61
  0.2776 -61.7541 22345.71
Clorox Green Works Glass & Surface 0.3268 0.4536 -38.80
Steel 0.2069 -0.2323 212.28
  0.2254 -0.7152 417.30
  0.2409 -0.1776 173.72
Plastic 0.2220 -0.0605 127.25
  0.2657 -0.1677 163.12
  0.6176 5.7989 -838.94
Ceramic 0.2903 3.8990 -1243.09
  0.2061 5.0259 -2338.57
EZ Clean Green Vinegar Cleaning Spray 0.2898 0.1074 62.94
Steel 0.2343 0.0818 65.09
  0.1632 0.2179 -33.52
  0.1591 0.0843 47.01
Plastic 0.1878 -0.1531 181.52
  0.2111 -0.1985 194.03
  0.4565 -1.3103 387.03
Ceramic 0.2154 -10.8201 5123.26
  0.2228 -6.6022 3063.29
EZ Clean Green Soft Scrub -0.3492 -1.2067 -245.56
Steel 0.2804 -0.1460 152.07
  0.2278 0.2671 -17.25
  0.2904 0.0815 71.94
Plastic 0.2341 0.2663 -13.75
  0.2396 0.4168 -73.96
  0.2102 -3.6910 1855.95
Ceramic 0.5317 5.2555 -888.43
  0.2106 6.0967 -2794.92

Success Rating:

Test incomplete or inconclusive.

Conclusion:

As in the bathroom soil cleaning trial, gravimetric results were inconsistent with visual observations. Follow trial will be conducted to address issues with results.

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