After the 3 months expiry date, the etchants may still produce the expected results, with no apparent effect on quality. This is especially true if the etchants are stored in a cool, dark and dry environment. The issue is that not all of them will last longer than 3 months. Some of them will degrade to the point of being unusable around 90 days or so. Because of this, all etchants have a 3-month shelf life.

Occasionally we advise customers to continue using their etchant until they no longer get the results they need. In other cases where safety is tightly regulated, they may not have this option. Learn more by contacting our Quality Consultants today.