To evaluate the effective ness of LFE Enzymatic Cleaner 2.5% (140 F) and Caprylic Acid 0.15 % 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 Caprylic Acid 0.15% 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:
Gravimetric Results
Cleaner
Substrate
Initial wt of cont.
Final wt of cont.
%Cont Removed
% AVG
% Overall
LFE Enzymatic Cleaner
Stainless steel 304
0.2825
0.0076
97.31
98.59
98.58
stainless steel 304
0.3168
0.0042
98.67
stainless steel 304
0.2388
0.0005
99.79
LFE Enzymatic Cleaner
Stainless Steel 316
0.2500
0.0056
97.76
98.57
Stainless steel 316
0.2429
0.0026
98.93
Stainless Steel 316
0.2241
0.0022
99.02
ATP Results
Cleaner
Substrate
ATP Level
Avg
Overall
Caprylic Acid Sanitizer
Stainless Steel 304
5
9.3
12.8
11
12
Caprylic Acid Sanitizer
Stainless Steel 316
6
16.3
21
21
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. Caprylic Acid is not an effective sanitizer for steel alloys 304 and 316.
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