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Trial Number 3

Trial Purpose:

To evaluate longer cleaning time without rinsing

Date Run:

03/15/2004

Experiment Procedure:

Four cleaners were selected from previous trial. Three aqueous based cleaners were diluted to 10% using DI water in 600 ml beakers. One semi-aqueous product was used at 50% diluted with DI water. All of the products were heated to 120 F on a hot plate.
Twelve preweighed aluminum coupons were coated with the second client supplied oil, Castrol Moly Dee Tapping Fluid. The oil was applied to coupons using a swab and then heated for 10 minutes using a Master Appliance heat gun. The coupons were allowed to cool to room temperature before weighing a second time.
Three coupons were cleaned in each solution for 10 minutes using stir-bar agitation. Coupons were not rinsed but were dried using air blow off at room temperature. Once dry, coupons were weighed a final time and efficiencies for each cleaner were calculated.

Trial Results:

Cleaning the soiled coupons for a longer time without rinsing was equal to the cleaning at five minutes with a rinse for all four products.  The table lists the amount of soil initially added, the amount remaining after cleaning and the efficiency for each coupon cleaned.

Cleaner Initial wt Final wt % Removed
815 GD 0.2238 0.0618 72.39
  0.5161 0.0770 85.08
  0.8064 0.2130 73.59
Metalnox M6314 1.0076 0.1547 84.65
  0.8464 0.1180 86.06
  0.9557 0.1098 88.51
Hurrisafe 9450 0.7028 0.1164 83.44
  0.7693 0.0831 89.20
  0.8761 0.0455 94.81
Bio T 300 B 0.7309 0.0061 99.17
  0.7656 0.0104 98.64
  0.7574 0.0099 98.69
815 GD 0.6043 0.0001 99.98
  0.4247 -0.0001 100.02
  0.5094 0.0001 99.98
Metalnox M6314 0.5104 0.0273 94.65
  0.5762 0.0126 97.81
  0.6401 0.1132 82.32
Hurrisafe 9450 0.6360 0.0155 97.56
  0.8197 0.0051 99.38
  0.5099 0.0075 98.53
Bio T 300 B 0.6065 0.0031 99.49
  0.5907 0.0065 98.90
  0.4515 0.0071 98.43

Success Rating:

A follow up test, usually based on company input.

Conclusion:

These four products will be tested using ultrasonic cleaning with rinsing.

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