Taylor 9056 comparator reading tricks

Hello all,

I have a basic Taylor testing kit with comparator 9056 and reagents R-0001/R-0002. I would like to use it as a quick validation daily instead of doing full tests. I would do the full tests like once a week during the weekend.
The thing is I have difficulty sometimes to distinguish exactly the colors and determine what is the chlorine level.
Do you have tricks to use to simplify this reading so it is more quick and more easy to identify the chlorine level?

Thanks!
 
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