I just kept the original plastic container for TF-100 kit and rearranged to hold SpeedStir
CYA testing on front left
Chlorine testing on front right with its test tube
CH testing on middle row with its test tube and SpeedStirrer
TA testing on top row with its test tube
K-1000 kit is kept external for pH testing
I keep extra refill bottles in a small plastic tool kit.
I am not in the industry and I wouldn’t think about doing a test without the speedstir. It does a better job of mixing than you can do yourself and lets you focus on getting the drops right and properly counting them. And if you happen to test at night, it has a handy light feature that makes it super easy to see the color changes. All in all it just speeds up the daily testing and gives you security knowing everything is mixed correctly.