I have a test at Quest next week. I purchased both the 4oz. Ultra Pure and a bottle of QF 4.2.

Which one should I use? Anybody have experience with both?

I like the idea of having 4oz...but if QF is more reliable, I will go with that.

Thanks in advance brothers and sisters!
indica79 Reviewed by indica79 on . Ultra Pure vs. QF 4.2 I have a test at Quest next week. I purchased both the 4oz. Ultra Pure and a bottle of QF 4.2. Which one should I use? Anybody have experience with both? I like the idea of having 4oz...but if QF is more reliable, I will go with that. Thanks in advance brothers and sisters! Rating: 5