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Trial Number 3

Client Number 153

Project Number 13

Trial Purpose:

Benchmark Testing of BevSafe products: Heated Ultrasonics

Date Run:

02/23/2024

Experiment Procedure:

Three pre weighed coupons were used per soil for two cleaners for a total of 12 coupons.  Half of the coupons were soiled with tea and tea leaves with a swab.  The other half were soiled with coffee and coffee grounds with a swab.  The coupons were then baked in the oven or 40 minutes at a temperature of 200 F to adhere the soils to the coupons and to initiate staining.  The dirty weights of the coupons and visual rankings were then recorded. The coupons were then subjected to 10 minutes of heated ultrasonics in their respective cleaners at 140 F.  The cleaners were used at the vendor recommended concentrations (BevSafe descaler 1%, BevSafe tank and line cleaner 4.5%).  The coupons were then removed from the cleaner and the clean visual rankings were recorded.  The coupons were allowed to dry overnight before clean weights were recorded.  Visual rankings were based on the key below.

Visual Rankings

1= 100% soil removed

2= 75% soil removed

3= 50% soil removed

4= 25% soil removed

5= 0% soil removed

Trial Results:

Cleaner Soil Initial wt of cont. Final wt of cont. %Cont Removed % AVG % Overall
BevSafe Descaler 1% Pigeon Cove Tea Leaves 0.0715 0.0000 100.00 99.29 85.00
0.1044 0.0005 99.52
0.0976 0.0016 98.36
Coffee 0.0035 0.0022 37.14 70.71
0.0009 0.0000 100.00
0.0040 0.0010 75.00
BevSafe Line and Tank Cleaner 4.5% Pigeon Cove Tea Leaves 0.1788 0.0019 98.94 97.64 61.68
0.0709 0.0014 98.03
0.0567 0.0023 95.94
Coffee 0.0028 0.0026 7.14 25.73
0.0019 0.0013 31.58
0.0013 0.0008 38.46
Cleaner Soil Dirty Visual Clean Visual AVG Clean Visual AVG Overall
BevSafe Descaler 1% Pigeon Cove Tea Leaves 5 1.0 1.0 1.00
5 1.0
5 1.0
Coffee 5 1.0 1.0
5 1
5 1
BevSafe Line and Tank Cleaner 4.5% Pigeon Cove Tea Leaves 5 1 1.0 1.50
5 1
5 1
Coffee 5 2 2.0
5 2
5 2

When the cleaner became discolored from the soil removed from coupons in previous test, this soil remained on the cleaned coupons after they dried.  This likely accounts for the low soil removal measured.  This is likely the cause of the unusual results in the previous tests.  The cleaner may require a rinse step.

Success Rating:

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

Conclusion:

The BevSafe Descaler 1% is effective in removing both soils from the coupons utilizing heated ultrasonics.  The BevSafe Line and Tank Cleaner 4.5% will be retested with all four methods adding a rinse step post cleaning to see if this will improve performance results.

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