Stability Flashcards
How long is the Calcium Carbonate good for after opening?
6 years
Maximum holding time for stability samples
Immediate analysis
How much CaCO3 is added to one of the samples?
1-2 g (must be saturated)
How much headspace is left on each sample?
none
How long do samples stir for?
30 min
Which additional tests must be preformed on both the saturated and unsaturated samples?
pH and Alkalinity
Which saturation method do we use? Slow of Rapid?
Rapid
If saturated pH and Alkalinity are both HIGHER than unsaturated
Corrosive
If saturated pH and Alkalinity are both LOWER than unsaturated
Scale Forming
If saturated pH and Alkalinity are both the SAME as unsaturated
Stable
If saturated pH and Alkalinity are not BOTH higher or lower than unsaturated
Invalid
When filtering, how much sample is discarded?
the first 25 to 50 mL
What do we consider an invalid result
when BOTH pH and alkalinity are not higher or lower between saturated and unsaturated