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




Surface Solutions Laboratory

Trial Report



Trial Number 9

(Client Number 155, Project Number 1)

Trial Purpose: Evaluating cleaners for removal.

Date Run: 10/01/01

Experiment Procedure:
Seven cleaners were selected based on previous trial. Solutions were diluted to 5% using DI water in 250 ml beakers. All solutions were heated to 120 F on a hot plate.
Twenty-one preweighed coupons were coated with the supplied slurry using a hand held swab and allowed to dry for 2 hours. These coupons were then weighed again. Three coupons were immersed into each beaker to be cleaned for 5 minutes. After the cleaning, the coupons were rinsed in DI water and dried using air blow off. Coupons were then weighed a final time and percent efficiencies were calculated for each cleaner.

Saint Gobain Industrial Ceramics Water Based Alumina (1344-28-1, 102-71-6)

Trial Results
All seven cleaners removed over 94% of the alumina from the ceramic coupons in the five minutes of cleaning.  ND 17 and LPS were the most effective
removing just over 97%.  The following table lists the calculated efficiencies.

Table 1.  Cleaning Efficiencies                            
Cleaner      Coupon1   Coupon2 Coupon3   Average Std Dev    Rank
Amberclean  95.40       97.66       90.45       94.50       3.69       5
Micro 90       97.18       95.56       89.58       94.11       4.00       7
LPS              94.91       96.99     100.00       97.30       2.56       2
ND 17           96.68       97.12       98.13       97.31       0.74       1
Inproclean    90.80       97.38       94.54       94.24       3.30       6
Polyspray     97.35       97.06       93.11       95.84       2.37       3
Safety First  96.15       92.91       96.21       95.09       1.89       4


Success Rating
A follow up test, usually based on company input.

Conclusion
In order to obtain 100% removal of the contaminant, two simple options could be taken. The first would be to increase the cleaning time and the second would be to use ultrasonic equipment.