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Trial Number 7

Client Number 233

Project Number 1

Trial Purpose:

To evaluate successful cleaners at lower concentrations.

Date Run:

12/14/2004

Experiment Procedure:

The top two products from the previous trials were diluted with DI water to two concentrations, 5 and 2.5%. The products were then heated to 200 F on a hot plate. The client's current cleaner was also used at 3% at the same temperature.

Fifteen preweighed stainless steel coupons were coated with the supplied cotton seed oil/starch mix and allowed to sit for 24 hours. Coupons were then weighed a second time to determine the amount of soil that was added. Three coupons were cleaned in each product for sixty minutes with no agitation. Cleaning was followed by a 15 second rinse in a tap water bath at 120 F and air blow off for 30 seconds at room temperature. Once dry, coupons were weighed a third time and efficiencies were calculated for each product tested.

Trial Results:

The Organic Cleaner/Degreaser at both concentrations worked as well as the client's current cleaner, removing over 98% of the oil after an hour of soaking at 200 F. Both concentrations of VPW SC1000 removed over 96% of the oil/starch mix. The table below lists the amount of soil added, the amount remaining and the percent removed for each coupon cleaned.

Cleaner Initial wt Final wt % Removed
Liquid Chembrite 0.4222 0.0003 99.93
  0.2230 0.0037 98.34
  0.3036 0.0022 99.28
Organic D/C 5% 0.3765 0.0016 99.58
  0.3343 0.0036 98.92
  0.3145 0.0026 99.17
Organic D/C 2.5% 0.1925 0.0013 99.32
  0.3677 0.0032 99.13
  0.1455 0.0021 98.56
VPW SC 1000 5% 0.4527 0.0094 97.92
  0.3108 0.0157 94.95
  0.3669 0.0073 98.01
VPW SC 1000 2.5% 0.3897 0.0070 98.20
  0.3775 0.0168 95.55
  0.4202 0.0128 96.95

Success Rating:

A follow up test, usually based on company input.

Conclusion:

The products will be tested on supplied contaminated coupons under similar conditions.

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