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Trial Number 1

Trial Purpose:

To evaluate semi-aqueous products on the first supplied lubricant.

Date Run:

05/15/2007

Experiment Procedure:

Three products from the previous trial were retested at 10% dilutions. In addition, six non-aqueous products were selected from the lab's on-line database, www.cleanersolutions.org based on client supplied information and past product performance. One product was diluted to with DI water to 10% in 600 ml beakers. The other five products were used at full strength. The cleaning solutions were all heated to 130 F on a hot plate.
Twenty-seven preweighed alloy coupons were coated with the first supplied lubricant and weighed a second time to determine the amount of contaminant added to each coupon. Three coupons were immersed into each solution and cleaned for 5 minutes using stir-bar agitation. Coupons were rinsed in room temperature tap water for 15 seconds and air dried using compressed dry air for 30 seconds. A final weight was recorded and efficiencies were calculated for each coupon cleaned.

Trial Results:

All five products used at full strength removed over 75% of the lubricant. Three of these removed over 93% and one of these (Solsafe 245) removed over 97%. The three products from the previous trial did not improve with an increase in concentration from 5 to 10%. The table below lists the amount of soil added, the amount remaining and the efficiency for each coupon cleaned.

Cleaner Initial wt Final wt % Removed
Micro 90 1.1948 0.6216 47.97
  1.1926 0.7440 37.62
  1.1380 0.6954 38.89
Ionox HC 2 1.2543 0.8456 32.58
  1.0725 0.7665 28.53
  1.5243 0.5292 65.28
Aquavantage 1400 1.0483 0.6334 39.58
  1.2284 0.7234 41.11
  1.0922 1.0026 8.20
SC Supersolve 1.8746 1.1165 40.44
  1.5725 0.9734 38.10
  1.6190 1.0192 37.05
Soy Gold 1100 0.9363 0.1518 83.79
  1.2886 0.1782 86.17
  1.3318 0.2678 79.89
Solsafe 245 1.2694 0.0235 98.15
  1.6363 0.0286 98.25
  1.5927 0.0427 97.32
Shopmaster RC 1.5022 0.0866 94.24
  1.9648 0.1115 94.33
  1.6057 0.1166 92.74
DS 108 1.4618 0.4115 71.85
  1.1213 0.1799 83.96
  1.2780 0.3799 70.27
D Greeze 500 LO 1.3857 0.0932 93.27
  1.2617 0.0827 93.45
  1.2530 0.0673 94.63

Success Rating:

Results suggest a scale-up feasible match for cleaning chemistry and equipment. Pilot plant study with actual parts recommended.

Conclusion:

The five semi-aqueous products will be evaluated for the cleaning of the second supplied contaminant under similar conditions.

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