Trial #2
Descaling efficacy testing of Virdivis FB-1000 at various concentrations compared to CLR.
Four marble blocks (2"x2") were tested using solutions of FB1000 at concentrations of 10%, 2%, and 1%, as well as CLR at 50%. Initial weights of the blocks were recorded before immersion. Each block was submerged in its designated solution within a beaker, and observations of dissolution, discoloration, or other changes were documented at 1, 5, 10, 15, and 30-minute intervals. After 30 minutes, the blocks were rinsed under deionized water for 15 seconds and dried with a heat gun set to 500°F for two minutes. The blocks were then allowed to cool to room temperature for two hours. Final weights were measured, and observations of any additional changes were recorded.
| Code
|
Cleaner
|
Dilution
|
| A
|
CLR
|
50%
|
| B
|
FB-1000
|
10%
|
| C
|
FB-1000
|
2%
|
| D
|
FB-1000
|
1%
|
| Cleaner
|
Initial wt
|
Final wt
|
Wt loss
|
Time (min)
|
Observation
|
| A
|
16.0441
|
15.1640
|
0.8801
|
1
|
Very fizzy; cloudy
|
| 5
|
Very fizzy; still cloudy
|
| 10
|
Very fizzy; very still cloudy
|
| 15
|
Very fizzy; very still cloudy
|
| 30
|
Very fizzy; very cloudy; soft
|
| B
|
15.7732
|
15.6949
|
0.0783
|
1
|
a little cloudy
|
| 5
|
cloudy; fizzy
|
| 10
|
cloudy; fizzy
|
| 15
|
cloudy; not as much fizz
|
| 30
|
very cloudy
|
| C
|
15.8808
|
15.8460
|
0.0348
|
1
|
no change
|
| 5
|
no change
|
| 10
|
small fizz; little cloudy
|
| 15
|
small fizz; little cloudy
|
| 30
|
small fizz; cloudy
|
| D
|
16.1105
|
16.0973
|
0.0132
|
1
|
no change
|
| 5
|
no change
|
| 10
|
little fizz
|
| 15
|
little fizz
|
| 30
|
little fizz
|
CLR (50%) produced a stronger reaction and resulted in greater marble dissolution compared to the FB-1000 dilutions. It also changed the color of the marble from light brown to a deeper brown after rinsing with DI water and drying. In contrast, the FB-1000 dilutions did not alter the color of the marble blocks like CLR did, but there was still measurable weight loss on each block, even though the reaction and weight loss amount decreased with the lower concentrations.
The FB-1000 concentrations demonstrated effectiveness in dissolving marble blocks, indicating their potential as a calcium remover or descaler. Among the tested dilutions, the 10% solution was the most effective and showed performance closest to the comparative product, CLR (50%).
No relation