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Trial Number 0

Trial Purpose:

To test the efficacy of Biogone 1.5% in removing synthetic blood from stainless steel at varioius temperatures.

Date Run:

10/25/2024

Experiment Procedure:

Bigone 1.5% was tested at three temperatures: 25C, 50C, and 60C.  Three stainless steel coupons were chosen for each temperature tested for a total of nine coupons.  Each coupon was weighed and had their initial weights recorded.  The coupons were then soiled with the provided synthetic blood by using a swab to wipe the blood on the lower third of each coupon (where the coupon would come in contact with the cleaning agent during immersion).  The coupons were left to air dry for 24 hours before having their dirty weights recorded.  The coupons were then subjected to 2 minutes of immersion in the Bigone 1.5% at their respective temperatures with a stir bar set to 200 rpm.  After cleaning, each coupon was rinsed in a DI water bath for 1 minute with a stir bar set to 200 rpm.  The coupons were left to air dry overnight before having their clean weights recorded. 

Trial Results:

Cleaner Temperature Initial wt of cont. Final wt of cont. %Cont Removed Visual Obvs % AVG
Bigone 1.5% 25C 0.0114 0.0013 88.60 Staining left where soil was most concentrated 89.87
0.0065 0.0009 86.15 Staining left where soil was most concentrated
0.0195 0.0010 94.87 Staining left where soil was most concentrated
50C 0.0309 0.0008 97.41 Staining left where soil was most concentrated, but to a lesser degree than previous group 93.95
0.0066 0.0005 92.42 Staining left where soil was most concentrated, but to a lesser degree than previous group
0.0025 0.0002 92.00 Staining left where soil was most concentrated, but to a lesser degree than previous group
60C 0.0015 0.0001 93.33 No staining 94.14
0.0040 0.0002 95.00 No staining
0.0135 0.0008 94.07 Staining where soil was most concentrated but to the least degree of all groups

Success Rating:

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

Conclusion:

As the temperature increases, the performance of the Bigone 1.5% improves.  Cleaning at 25C and 50C was not able to remove staining, while cleaning at 60C began to remove most staining dependent on the soil load.  

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