Abstract: The present invention relates to a method for increasing adhesion strength between a surface of copper or copper alloy and an organic layer, the method comprising in this order the steps: (i) providing a non-conductive substrate comprising on at least one side said surface, said surface having a total surface area of copper or copper alloy, (ii) contacting said substrate comprising said surface with an acidic aqueous non-etching protector solution comprising (ii-a) one or more than one amino azole, (ii-b) one or more than one organic acid and/or salts thereof, (ii-c) one or more than one peroxide in a total amount of 0.4 wt-% or less, based on the total weight of the protector solution, and (ii-d) inorganic acids in a total amount of 0 to 0.01 wt-%, based on the total weight of the protector solution, wherein during step (ii) the total surface area of said surface is not increased upon contacting with the protector solution.

Abstract: An expendable remote initiator receiver for initiating at least one shock tube connectable to an explosive charge. The receiver includes a shock tube interface that directly interfaces with a shock tube connected to an explosive charge, a spark initiator that initiates a spark at the shock tube interface to initiate the shock tube, a multifunctional shock tube interface adaptor mounted and connected to the shock tube interface, wherein the multifunctional shock tube interface connects the ground of a printed circuit assembly (PCA) to the shock tube needle to allow a spark to occur upon initiation by the spark initiator and also holds the PCA securely.

Abstract: An expendable remote initiator receiver for initiating at least one shock tube connectable to an explosive charge. The receiver includes a shock tube interface that directly interfaces with a shock tube connected to an explosive charge, a spark initiator that initiates a spark at the shock tube interface to initiate the shock tube, a multifunctional shock tube interface adaptor mounted and connected to the shock tube interface, wherein the multifunctional shock tube interface connects the ground of a printed circuit assembly (PCA) to the shock tube needle to allow a spark to occur upon initiation by the spark initiator and also holds the PCA securely.