Jacket water test and treatment Tagged: JW FW treatment This topic has 1 reply, 2 voices, and was last updated 4 years, 6 months ago by cat60y. Viewing 1 post (of 1 total) Author Posts 28/10/2020 at 13:19 #14051 cat60yParticipant ★★ 2 STARContributions: 51 Understood from the above that Evaporated seawater meaning our distilled water generated from fresh water generator. Ive only know of 2 chemical suppliers, DREW MARINE & UNITOR For Unitor, jacket water treatment are using Natfleet to increase Nitrate levels. Nitrate levels are best kept above 1200. Author Posts Viewing 1 post (of 1 total) You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In