When working as a chemist I would bring in a sample every morning and titrate for alkalinity, and other parameters. I have log books filled with data and kept on my tanks to watch trends.
Over the years test strips have become available that are accurate enough for our purpose.
Fischer Scientific has a group of test strips I became familiar with in the lab for everything from alkalinity to nitrate and between.
Many strips out there may be produced with varying degrees of accuracy, (and by the same company) but since Fischer Sci was considered accurate enough for drinking water testing, and approved by the agencies I reported to, I still like to use them. ...........................................................................