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




Surface Solutions Laboratory

Trial Report



Trial Number 14

(Client Number 275, Project Number 1)

Trial Purpose: To evaluate supplied products for peanut oil removal from non-porous surface using manual wiping.

Date Run: 09/24/09

Experiment Procedure:
The first supplied product was used at a 1:48 dilution. The second supplied product was used at three dilutions, 1:64, 1:128 and 1:256. A conventional product was used at a 1:64 dilution. A sixth product that uses electrolyzed water was included in the testing.

Preweighed hard plastic coupons were coated with peanut oil taken from a jar of all natural peanut butter. The oil was skimmed off the top of the container and applied to the coupons using a swab. Coupons were weighed a second time to determine the amount of oil that was applied.

Coupons were placed in a Gardner Straightline washability unit. A Wypall X60 reinforced wipe was attached to the cleaning sled and soaked with 5-7 sprays of cleaning solutions. Each coupon was sprayed 7-10 times with the same cleaning solution. The solution was allowed to penetrate for 30 seconds followed by cleaning in the SLW unit for 20 cycles (~33 seconds). At the end of the cleaning, coupons were wiped once with a dry paper towel. Final weights were recorded and efficiencies were calculated and recorded.

Following the first round of cleaning, a second round of manual cleaning was conducted on the same set of coupons using the washability unit. A second set of final clean weights were recorded and efficiencies calculated.

Trial Results
All six products removed over 95% of the peanut oil in the first cleaning attempt. Following the second round of wipe cleaning, all removed over 98%.
The four supplied products removed over 99% of the oil. The table lists the amount of peanut oil added, remaining after cleaning and the efficiency
for each coupon cleaned for both cleaning cycles.

Cleaner Initial wt   Final wt     % Removed    2nd Final wt   2nd % Removed
PC 116                                        
        0.1727        0.0069        96.00        0.0022        98.73
        0.2198        0.0079        96.41        0.0000       100.00
        0.2865        0.0072        97.49        0.0004        99.86
PC 120 1:64                                        
        0.2379        0.0036        98.49        0.0011        99.54
        0.2743        0.0038        98.61        0.0005        99.82
        0.2599        0.0068        97.38        0.0049        98.11
PC 120 1:128                                        
        0.2410        0.0099        95.89        0.0014        99.42
        0.2599        0.0054        97.92        0.0001        99.96
        0.3138        0.0052        98.34        0.0012        99.62
PC 120 1:256                                        
        0.2637       -0.0006       100.23       -0.0013       100.49
        0.2754        0.0005        99.82        0.0009        99.67
        0.2753        0.0044        98.40        0.0000       100.00
Alpha HP                                        
        0.3543        0.0032        99.10        0.0004        99.89
        0.4482        0.0027        99.40       -0.0007       100.16
        0.2805        0.0036        98.72        0.0011        99.61
Activeion                                        
        0.3156        0.0038        98.80       -0.0014       100.44
        0.2006        0.0097        95.16        0.0036        98.21
        0.2349        0.0075        96.81        0.0040        98.30


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

Conclusion
All six products were very effective at removing peanut oil after two cleaning cycles using manual wiping.