1. A concentrated solution containing water, citrate ions and silver ions, where citrate ions have a high concentration in a concentrated solution, which is at least 300 g / l, and where silver ions have a high concentration in a concentrated solution, which is at at least 10 g / l. ! 2. The concentrated solution according to claim 1, where the increased concentration of citrate ions is between 300 g / l and 1550 g / l, and the increased concentration of silver ions is between 10 g / l and 25 g / l. ! 3. The concentrated solution according to claim 1, where the increased concentration of citrate ions is between 300 g / l and 800 g / l, and the increased concentration of silver ions is between 10 g / l and 25 g / l. ! 4. The concentrated solution according to claim 1, where the increased concentration of silver ions is more than 13 g / l, and the increased concentration of citrate ions is at least 30 times greater than the increased concentration of silver ions by weight. ! 5. The concentrated solution according to claim 1, where the concentrated solution consists essentially of water, citrate ions and silver ions. ! 6. The concentrated solution according to claim 4, additionally containing an amount of a stabilizing additive. ! 7. The concentrated solution according to claim 6, where the stabilizing additive consists of glycerol. ! 8. The concentrated solution according to claim 6, where the concentrated solution consists essentially of water, citrate ions, silver ions and a stabilizing additive. ! 9. The diluted solution obtained by adding water to a concentrated solution containing water, citrate ions and silver ions, where silver ions have an increased concentration in the concentrated solution, which is more than 10 g / l, where citrate ions have an increased1. Концентрированный раствор, содержащий воду, цитрат-ионы и ионы серебра, где цитрат-ионы имеют повышенную концентрацию в концентрированном растворе, которая составляет по меньшей мере 300 г/л, и где ионы с
