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Trial Number 3

Trial Purpose:

To evaluate the effective ness of LFE Enzymatic cleaner and NaDCC tablet sanitizer in cleaning and sanitizing stainless steel alloys 304 and 316

Date Run:

08/10/2022

Experiment Procedure:

Six stainless steel coupons were used, three being the 304 alloy and three being the 316 alloy.  The initial weights of each coupon were taken.  The coupons were then soiled with Cedar's Chocolate Hummus by wiping a thin layer, but leaving some chunky spots, and the bottom half of the substrate.  The dirty weights of each coupon were then taken.  Coupons were immersed in the heated cleaner LFE Enzymatic Cleaner 2.5% (130 F) and put in the ultrasonics machine for 20 mins.  Directly after removing the coupons from the cleaner, they were then immersed in the sanitizer NaDCC tablets 269ppm at room temperature (68 F) and put in the ultrasonics machine for five minutes.  The cleaned coupons were left to air dry for 8 hours. ATP levels were measured using Hygenia ATP Swabs followed by clean weights being taken for each coupon.  

Trial Results:

Cleaner Substrate Initial wt of cont. Final wt of cont. %Cont Removed % AVG % Overall
LFE Enzymatic Cleaner Stainless steel 304 0.3561 0.0021 99.41 99.66 99.20
stainless steel 304 0.2177 0.0028 98.71
stainless steel 304 -0.7176 0.0062 100.86
LFE Enzymatic Cleaner Stainless Steel 316 0.3462 0.0076 97.80 98.74
Stainless steel 316 0.2527 0.0033 98.69
Stainless Steel 316 0.2554 0.0007 99.73

ATP Results

Cleaner Substrate ATP Level Avg Overall
Caprylic Acid Sanitizer Stainless Steel 304 1 2.7 9.3
    4
    3
Caprylic Acid Sanitizer Stainless Steel 316 22 16.0
    22
    4

Sanitizer left white residue 

Success Rating:

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

Conclusion:

LFE Enzymatic Cleaner 2.5% (130 F) is an effective cleaner for stainless steel alloys 304 and 316.  NaDCC tablets 269ppm are not an effective sanitizer for stainless steel alloys 403 and 316

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