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Trial Number 2

Trial Purpose:

To evaluate successful cleaners on second adhesive.

Date Run:


Experiment Procedure:

Two semi aqueous products and two aqueous products were selected based on the previous trial results. The two semi aqueous products were used at full strength and the two aqueous products were diluted to 10% using DI water in 600 ml beakers. Each solution was heated to 130F in a Crest 40 kHz Ultrasonic unit and degassed for 5 minutes prior to cleaning. Twelve preweighed coupons were coated with Emerson & Cuming Stycast 4952 Red (silicone resin, ethyl silicate, mineral filler and pigments) using a hand held swab. Coupons were allowed to sit overnight and reweighed to determine the amount of resin applied. Three coupons were immersed into each solution at 130 F for 5 minutes using ultrasonic energy. Observations were made every minute during cleaning to determine the time required to achieve effective cleaning. Following cleaning, coupons were rinsed in a tap water bath for 15 seconds at 120 F then a tap water spray rinse also at 120 F and finally dried using a Master Appliance Heat Gun at 500 F for 30 seconds. Once coupons were at room temperature, final clean weights were recorded and cleaning efficiencies were calculated for each product.

Trial Results:

Both the semi aqueous products required less than the 5 minutes to remove over 99% of the contaminant.  Both were removed from the bath after 3 minutes of cleaning.  The aqueous based products had limited success in removing the adhesive after the 5 minutes of cleaning.  The table below shows the amounts of adhesive added and removed by each cleaning solution.

Cleaner Initial wt of cont. Final wt of cont. %Cont Removed
Bio T Max 0.9479 -0.0002 100.02
  0.5144 0.0004 99.92
  0.5617 0.0000 100.00
Solsafe 0.5646 0.0008 99.86
  1.0390 0.0006 99.94
  0.2627 0.0012 99.54
Surface Cleanse 0.7756 0.0759 90.21
  0.7710 0.3324 56.89
  0.4353 0.1344 69.12
Inproclean 0.3781 0.1028 72.81
  0.9600 0.3768 60.75
  0.4220 0.1073 74.57

Success Rating:

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


Both Bio Chem Systems products were successful in removing the red adhesive in three minutes of ultrasonic cleaning.

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