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Trial Number 5

Trial Purpose:

To evaluate supplied aerosol products for manual wood cleaning

Date Run:

06/04/2009

Experiment Procedure:

Preweighed wood (maple) 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. A Kimberly Clark Reinforced paper towel 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). At the end of the cleaning, coupons were wiped once with a dry paper towel. Final weights were recorded and efficiencies were calculated and recorded.

Trial Results:

The supplied products results from the gravimetric analysis were inconclusive for Hucker's Soil removal. The table lists the amount of soil initially added and the amount remaining after cleaning and the product efficiency for each coupon cleaned. Visual rankings were conducted by three staff members. 

Cleaner Initial wt Final w % Removed
A00133 0.2077 0.1154 44.44
  0.2337 0.1502 35.73
  0.2698 0.1728 35.95
A00136 0.2062 0.1438 30.26
  0.1342 0.0488 63.64
  0.4245 0.2094 50.67
Spartan 0.2184 0.1364 37.55
  0.1680 0.1219 27.44
  0.2248 1.7378 -673.04
Claire 0.2306 -0.5674 346.05
  0.2637 -0.7480 383.66
  0.2391 0.1591 33.46
Pledge 0.2525 0.1584 37.27
  0.3206 0.2602 18.84
  0.3568 0.1852 48.09

Visual Rank

Obs 1 Obs 2 Obs 3 Ave:
3 2 3 2.7
1 1 1 1
4 4 5 4.3
2 5 2 3
5 3 4 4

Success Rating:

A follow up test, usually based on company input.

Conclusion:

Amrep’s Aspire was found to have the second best ranking for cleaning based on visual assessment.

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