Trial Purpose:
To evaluate CleanCore Aqueous Ozone solution (ozonated water) (at time = 0, 2 & 4 hrs) and a comparative cleaner on removal efficiency from ceramic and chrome substrates
Date Run:
11/16/2016Experiment Procedure:
Three pre-weighed coupons per cleaner were coated with 0.5 g of Huckers soil, at 68°F(room temperature), using a hand held swab. The contaminated coupons were air dried for 2 hours at 68°F (room temperature) and weighed again to determine the amount of soil added after the 2 hour period.
The CleanCore Aqueous Ozone kiosk machine was turned on and run to generate ozonated water. Ozonated water was collected into the CleanCore Spray Bottle.
Properties of tap water and the ozonated water (directly from the spray hose and the CleanCore Spray Bottle) were measured and recorded throughout the procedure, as necessary, including temperature, ORP values (mV), dissolved ozone levels (ppm), and pH.
Instrumentation used for measurements:
on-machine: dissolved ozone meter - ATi Q45H (ozone in ppm and temp in °F); ORP meter - Black Stone BL982411 ORP Controller (ORP in mV)
handheld instruments: Hanna HI 98121 meter (ORP & temp in °C); Chemetrics Meter with vacu-vials (dissolved ozone in ppm)
At the appropriate time interval, based on the age of the ozonated solution in the CleanCore Spray Bottle (t= 0 hr, t=2 hr, t=4 hr), three coupons of each substrate were placed in the SLW unit and a KC Wypal reinforced paper towel was attached to the cleaning sled and treated with one spray of cleaning solution from the CleanCore Spray Bottle. Each coupon was sprayed once with the same cleaning solution. The cleaning unit was run for 20 cycles (equivalent of 30 seconds of cleaning). Coupons were dried overnight and final weights were recorded. Efficiencies were calculated and recorded.
Three coupons of each substrate were also cleaned with a comparative cleaner (Formula 409 Multi-Surface Cleaner) instead of the ozonated solution, following the same process on the SLW machine and for drying and final weights.
Trial Results:
| Ozonated H2O | t=0 hrs | t=2 hrs | t=4 hrs |
| Temperature | 24.1 °C | 24.0 °C | 23.8 °C |
| Ozone Levels (in ppm & ORP mV) | |||
| handheld meter (from spray bottle) | ORP 4098mV | 244 mV | 223 mV |
| meter on machine (during filling) | ORP 930 mV | ||
| meter on machine | 1.010 - 1.200 ppm | ||
| vacu-vials (soln from hose) | 1.06 ppm | ||
| vacu-vials (soln from spray bottle) | 0.46 ppm | 0.04 ppm | 0.01 ppm |
| temp of water when made | 74.3 °F | ||
| pH of water when made | 6.5 | ||
| tap water - ORP (handheld meter) | 287 mV | 236 mV | 212 mV |
| tap water - temp (handheld meter) | 23.2 °C | 23.0 °C | 23.0 °C |
| ozone in tap water (vacu-vials) | 0.04 ppm |
Removal
| Cleaner | Initial wt | Final wt | % Removed |
| Clean Core Ozone soln, t- 0 hr | 0.2261 | 0.0659 | 70.85 |
| Ceramic | 0.2293 | 0.0609 | 73.44 |
| 0.2586 | 0.0605 | 76.60 | |
| Clean Core Ozone soln, t- 2 hr | 0.2339 | 0.1069 | 54.30 |
| Ceramic | 0.2509 | 0.1205 | 51.97 |
| 0.2370 | 0.0825 | 65.19 | |
| Clean Core Ozone soln, t- 4 hr | 0.2478 | 0.0488 | 80.31 |
| Ceramic | 0.2339 | 0.1494 | 36.13 |
| 0.2398 | 0.0882 | 63.22 | |
| Formula 409 Multi-Surface Cleaner | 0.2317 | 0.0204 | 91.20 |
| Ceramic | 0.2480 | 0.0122 | 95.08 |
| 0.2474 | 0.0169 | 93.17 | |
| Clean Core Ozone soln, t- 0 hr | 0.2376 | 0.0667 | 71.93 |
| Chrome | 0.2212 | 0.0631 | 71.47 |
| 0.2355 | 0.0457 | 80.59 | |
| Clean Core Ozone soln, t- 2 hr | 0.2680 | 0.0282 | 89.48 |
| Chrome | 0.2441 | 0.0297 | 87.83 |
| 0.2289 | 0.0475 | 79.25 | |
| Clean Core Ozone soln, t- 4 hr | 0.2302 | 0.0434 | 81.15 |
| Chrome | 0.2283 | 0.0395 | 82.70 |
| 0.2322 | 0.0264 | 88.63 | |
| Formula 409 Multi-Surface Cleaner | 0.2321 | 0.0091 | 96.08 |
| Chrome | 0.2293 | 0.0108 | 95.29 |
| 0.2387 | 0.0148 | 93.80 |
Ceramic Substrate
| CompanyName: | Product Name | Conc. | % Efficiency | Effective |
| CleanCore | Aqueous Ozone | 100% | T= 0 hrs: 73.63 | |
| T= 2 hrs: 57.15 | ||||
| T = 4 hrs: 59.88 | No | |||
| Formula 409 | Multi-Surface | 100% | 93.15 | Yes |
Observations (if any):
CleanCore Visual thick residual portions of soil left after cleaning with CleanCore Aqueous Ozone as compared to Formula 409 Cleaner
Formula 409 visual: appreciably greater quantity of soil removed with Formula 409 Cleaner than with CleanCore Aqueous Ozone
Chrome Substrate
| CompanyName: | Product Name | Conc. | % Efficiency | Effective |
| CleanCore | Aqueous Ozone | 100% | T= 0 hrs: 74.67 | |
| T= 2 hrs: 85.52 | ||||
| T = 4 hrs: 84.16 | No at T = 0 | |||
| Formula 409 | Multi-Surface | 100% | 95.06 | Yes |
Observations (if any):
CleanCore Visual more residual soil left covering most of coupon surface for coupons cleaned with CleanCore Aqueous Ozone as compared to coupons cleaned with Formula 409 Multi-Surface Cleaner
Formula 409 visual: appreciably greater quantity of soil removed with Formula 409 Cleaner than with CleanCore Aqueous Ozone
Success Rating:
Results successful using TACT (time, agitation, concentration, and temperature, as well as rinsing and drying) and/or other cleaning chemistries examined.Conclusion:
For ceramic substrate with Huckers soil, the CleanCore Aqueous Ozone Solution had a removal efficiency of 73.63 % at T=0, as compared to the 93.15 % for the Formula 409 Multi-Surface Cleaner. Visually, thick residual portions of soil were left after cleaning with CleanCore Aqueous Ozone as compared to Formula 409 Multi-Surface Cleaner. The CleanCore Aqueous Ozone solution was not effective at removing Huckers soil from ceramic coupons.
For chrome substrate with Huckers soil, the CleanCore Aqueous Ozone Solution had a removal efficiency of 74.67% at T=0, as compared to the 95.06 % for the Formula 409 Multi-Surface Cleaner. Visually, more residual soil was left covering most of coupon surface for coupons cleaned with CleanCore Aqueous Ozone as compared to coupons cleaned with Formula 409 Multi-Surface Cleaner. The CleanCore Aqueous Ozone solution was not effective at removing Huckers soil from chrome coupons (at T=0).
