low range

Hi all, I have an Ultra Low hanna phosphate checker but bought the incorrect reagent. Instead of getting the ultra low reagent I got the low range reagent by mistake. Do you know if you can still get an accurate reading using the low range reagents on the ultra low checker? Thanks!

Hanna Low Range Phosphate Photometer, Alk, Cal, Phos, PH - $300 shipped for all 5 Checkers and cases. This is a brand new and unused kit. It’s not the newest model. Comes in a nice padded hard case.