After extensive testing by our R&D department we have now made available new versions of our popular type 3 and 4 electrolytes, types 3A and 4A. These are for the same applications as types 3 and 4. They contain a reformulated electrolyte that greatly reduces the risk of electrolyte leakage; we recommend using the new formulations instead of the old types in all applications. The original formulations are still available in order to allow customers to choose when (and if) they want to make the switch.