The Teflon flask with some borosilicate did have a lower ending PH than the flask with only Teflon. Assuming the authors ruled out other potential sources for that reduction, then one must conclude that borosilicate had an effect.
Yes, the pure borosilicate flask had a much greater effect, but there was also much greater surface area for the solution to work on.
An interesting experiment might be to see if the reduction in PH levels scaled with the amount of borosilicate added to the solution. They may have done that in the paper, but that'd settle the question you posed.
Yes, the pure borosilicate flask had a much greater effect, but there was also much greater surface area for the solution to work on.
An interesting experiment might be to see if the reduction in PH levels scaled with the amount of borosilicate added to the solution. They may have done that in the paper, but that'd settle the question you posed.