What type of Chloride testing kit should you use? We have created a buying guide and informational page below to assist in educating you on this subject. If you need help, please reach out to us at anytime. The measurement of surface chlorides on substrates can be conducted with various test kits to detect chloride ions. Steel that has been exposed to marine environments, has a very high chance of surface chlorides which need to be removed prior to or after abrasive blasting. Elevated levels of soluble salts and or surface chloride ions, can lead to premature coating failure and rework.