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




Surface Solutions Laboratory

Trial Report



Trial Number 1

(Client Number 299, Project Number 1)

Trial Purpose: To evaluate possible immersion cleaning process for company to replace current solvent dunking system.

Date Run: 05/01/08

Experiment Procedure:
Six products were selected based on previous lab testing for similar cleaning scenarios. Preweighed coupons were coated with the supplied grinding fluid (Houghton - Grind (HOUC 420060) using a hand held swab and weighed a second time to determine the amount of soil added.

Each cleaner was put in a bowl and three coupons were dunked into the solution at a constant rate for 30 seconds of cleaning. The coupons were then put on a tray and when done and allowed to air dry. There was no rinse. The process was done to as closely replicate the process used on site as possible. Once dry, final weights were recorded and efficiency calculated for each coupon cleaned.

Trial Results
Only one product was moderately successful, removing just under 80% of the grinding fluid. Three products removed over 50%. The table below lists the
amount of soil added, the amount remaining and the efficiency for the coupons cleaned.

Cleaner       Initial wt Final wt  % Removed
Solsafe 245     0.2404    0.1178    51.00
                0.1904    0.0744    60.92
                0.4142    0.1629    60.67
Metalnox M6310  0.1942    0.0514    73.53
                0.2076    0.0479    76.93
                0.2219    0.0349    84.27
Ionox HC 2      0.2633    0.0964    63.39
                0.1483    0.1180    20.43
                0.2291    0.0676    70.49
Soy Clear 1500  0.1229    0.0984    19.93
                0.2574    0.1238    51.90
                0.2085    0.1985     4.80
Biodiesel       0.2689    0.2566     4.57
                0.1173    0.0916    21.91
                0.1485    0.1137    23.43
SC Supersolve   0.3400    0.1177    65.38
                0.2599    0.1272    51.06
                0.1885    0.1075    42.97


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

Conclusion
Longer cleaning times should improve the efficiencies for many of the selected products. All six will be evaluated on the second supplied cutting fluid.