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Trial Number 10

Client Number 218

Project Number 1

Trial Purpose:

To evaluate cleaners on red dye using ultrasonic energy

Date Run:

03/08/2004

Experiment Procedure:

Two cleaners from the previous trial were diluted to 10% in 250 ml beakers and three other products were used at full strength. All products were suspended in a Branson 3510 ultrasonic tank (40kHz) filled with water and degassed for five minutes. Fifteen preweighed coupons were coated with the dye, Sherwin Incorporated Dubl-Ckek Penetrant DB-51 (68131-40-8). using a hand held swab. Coupons were then reweighed. Three coupons were cleaned in each product for 5 minutes using ultrasonic energy. At the end of cleaning, coupons were rinsed with tap water at 120 F for 15 seconds and dried using air blow off for 30 seconds at 68 F. Once dry, coupons were weighed a final time and efficiencies were calculated.

Trial Results:

All five products were successful in removing over 94% of the dye using ultrasonic energy. All five improved over the immersion cleaning methods. DuPont DBE and Metabolix E3HB removed over 98% of the dye. The table below lists the amount of dye added, the amount remaining and the efficiency for each cleaner tested.

Cleaner Initial wt Final wt % Removed
SC Aircraft 0.0295 0.0015 94.92
  0.0248 0.0013 94.76
  0.0242 0.0013 94.63
Micro 90 0.0102 0.0005 95.10
  0.0263 0.0010 96.20
  0.0124 0.0004 96.77
E3HB 0.0314 0.0005 98.41
  0.0344 0.0010 97.09
  0.0335 0.0001 99.70
Ink Zapper 0.0252 0.0002 99.21
  0.0187 0.0004 97.86
  0.0193 0.0006 96.89
DBE 6 0.0327 -0.0001 100.31
  0.0144 0.0005 96.53
  0.0326 0.0006 98.16

Success Rating:

A follow up test, usually based on company input.

Conclusion:

The successful products will be tested on the second dye supplied by the client.

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