For some time, I have been tossing around the idea of getting a Taylor 9265 - Magnetic stirrer; better known as the renowned Speedstir. The main time I seem to be wanting it is when I perform the CH test b/c my pool has a relatively high CH (latest CH 1000; just b/c some may wonder what my #s are: pH 7.5, FC 7.5, CC 0, TA 60, CYA 50, temp = 57; my water is balanced per Pool Math and CSI is inline). Thus, I am sitting swirling for some time. Not to mention, occasionally I have lost count of how many drops of reagent I have added, and also had a hard time distinguishing when the water sample color stops changing blue. Thus, sometimes I have added reagent and gotten to my supposed stop point, only to add more reagent and the color continues to change. My thinking is that with a Speedstir, I can more easily focus on the color change vs. managing swirling, counting, and detecting color change.
If you have a Speedstir, please weigh in here on how you like it and how it has helped you.
Edit: Sorry about that 0 at the end of samples in the poll. I don't know how to edit the poll and delete that typo.