https://www.hannainst.com/hi707-nit...M6-pBZWFN6zuhE_5txWi2CjfGPwt6fSwaAjyyEALw_wcBThat's what I thought just wanted check. Cuz I got most the Hanna checks because I hate trying to match colors so been trying find a better nitrate test kit
theres nothing that says this isn't for salt water

