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Toxics Use Reduction Institute · Surface Solutions Laboratory
 
Toxics Use Reduction Institute




Surface Solutions Laboratory

Trial Report



Trial Number 2

(Client Number 263, Project Number 1)

Trial Purpose: To evaluate the top two products on the supplied oil using immersion cleaning.

Date Run: 08/22/06

Experiment Procedure:
Two products from the previous trial were diluted to 5% in 250 ml beakers using DI water and heated to 130 F.

Six preweighed coupons were coated with the supplied oil using a hand held swab. Coupons were weighed a second time to determine the amount of buffing compound added. Three coupons were cleaned in each solution for five minutes using minimal agitation in an immersion bath. Coupons were rinsed for 15 seconds in a tap water bath at 120 F and dried using a dry compressed air for 30 seconds. Once dry coupons were weighed a final time and product efficiencies were calculated.

Trial Results
Both products showed some ability to remove the oil using immersion cleaning. However, efficiencies were below 80%. The table below lists the amount
of buffing compound added, the amount remaining and the efficiency for each coupon cleaned.

Cleaner               Initial wt   Final wt     % Removed
Daraclean 283          0.1511       0.0483       68.03
                       0.2187       0.0502       77.05
                       0.2745       0.0586       78.65
Polyspray Jet 790 XS   0.3827       0.0811       78.81
                       0.2068       0.0567       72.58
                       0.2292       0.0452       80.28


Success Rating
Results successful using TACT (time, agitation, concentration, and temperature, as well as rinsing and drying) and/or other cleaning chemistries examined.

Conclusion
Both products will be reevaluated using ultrasonic cleaning.