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I have a similar one for my tests, and while they are great, if I had to buy one again, I'd go for one like op has, maybe a cheap chinese copy. The small ones don't always work with all vials (salifert nitrate barely does with mine), and the big ones can also be used to mix up dosing solution from powder
+1 to this. I've posted a few times about the fact that a magnetic stirrer, stir bar, digital scale, and 1L volumetric flasks are extremely convenient to mix your own Ca, Alk and other supplement solutions. Way back in the day, those pieces of kit would have been really, really expensive. But not anymore - maybe $100 for all of the equipment, if that.I have a similar one for my tests, and while they are great, if I had to buy one again, I'd go for one like op has, maybe a cheap chinese copy. The small ones don't always work with all vials (salifert nitrate barely does with mine), and the big ones can also be used to mix up dosing solution from powder
Using a magnet stirrer will help you hit titration endpoints. You might want to add a white piece of plastic to the stir plate top to help with seeing color changes. If you want to achieve even higher accuracy, buy an inexpensive 0.001 g electronic scale to calibrate your syringes, making sure they are delivering the amounts you want. Much of the error in hobby kits is probably because of inconsistent lab practices not the kits themselves.