Salinity tester/Whats good

[Dorkel Marine 1]

I think my salinity tester is bunked. It was a Coralife Deep Six tester. I know it's not a top of the line variety. I could only afford it at the time. Could you guys please suggest some good ones at a reasonable price. I use it alot since I do weekly tests for my nano tank. Thanx in advance. I would probably go indebt for a good one.

Happy reefin! George