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




Surface Solutions Laboratory

Trial Report



Trial Number 7

(Client Number 299, Project Number 1)

Trial Purpose: To evaluate products at higher concentrations and longer times on grinding fluid.

Date Run: 05/21/08

Experiment Procedure:
Three products from previous lab testing were used at 20% dilution and one was used at five percent. 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.

A second batch of coupons were cleaned for 1 minute following all other procedures. An additional three products were included in the evaluation at 20% dilutions.

Trial Results
The 20% solution at 30 seconds were still ineffective on the grinding fluid. However, the increased cleaning time (1 minute) improved the results with
two of the products removnig over 90% of the contaminant. The table lists the amount of soil added, the amount remaining and the efficiency for each
coupon cleaned at both time lengths.

30 Second Cleaning
Cleaner             Initial wt Final wt  % Removed
Shopmaster LPH      0.1397     0.0430     69.22
                    0.0556     0.0607     -9.17
                    0.0954     0.0485     49.16
Shopmaster HP       0.1515     0.0697     53.99
                    0.0678     0.0432     36.28
                    0.0990     0.0666     32.73
Bio T 300 B         0.0907     0.0435     52.04
                    0.1567     0.0380     75.75
                    0.0983     0.0504     48.73

1 minute cleaning
1 minute cleaning Grinding Fluid
Cleaner             Initial wt Final wt  % Removed
SC Aircraft         0.1860     0.0120     93.55
                    0.2019     0.0155     92.32
                    0.1409     0.0110     92.19
Inproclean 3800     0.1529     0.0171     88.82
                    0.2310     0.0122     94.72
                    0.1980     0.0183     90.76
Aquavantage 1400 GD 0.1744     0.0324     81.42
                    0.0872     0.0339     61.12
                    0.1195     0.0466     61.00
Shopmaster LPH      0.2909     0.1386     52.35
                    0.1044     0.0544     47.89
                    0.2163     0.0218     89.92
Shopmaster HP       0.1075     0.0318     70.42
                    0.0754     0.0459     39.12
                    0.1991     0.0608     69.46
Bio T 300           0.2037     0.0760     62.69
                    0.2221     0.0343     84.56
                    0.1032     0.0312     69.77


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

Conclusion
The increased concentration and time both proved effective on the grinding fluid.