While we don't generally endorse specific ion testing, when you need to tst only for chloride, this is the lest expensive kit on the market. It has an additional ebenifit of being able to run both chloride and total salts with the same sample. It utilizies the DeFelsko Posipatch system. If you have the patchring , the refill kit is $75.00. If you dont have the ring, you can buy it by itself for $175 or get it with the starter kit which includes 10 tests for $250.00. Quick and simple and if you have a conductvity meter youcan run both chloride and salts at the same time with one test sample.