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Storage- and autoclave-stable concentrated dihydrostreptomycin solution

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1. A STABLE CONCENTRATED AQUEOUS SOLUTION OF DIHYDROSTREPTOMYCIN, CHARACTERIZED AS BEING STABLE BOTH DURING STORAGE AND AT THE ELEVATED TEMPERATURE UTILIZED FOR STERILIZATION BY AUTOCLAVING, WHICH COMPRISES AN AQUEOUS SOLUTION CONTAINING A SALT OF DIHYDROSTREPTOMYCIN, THE AMOUNT OF SAID SALT BEING EQUIVALENT TO AT LEAST ABOUT 250 MG. OF DIHYDROSTREPTOMYCIN BASE PER CC. OF SOLUTION, A BUFFERING AGENT, AND AT LEAST ONE STABILIZING AGENT SELECTED FROM THE GROUP CONSISTING OF SALTS OF SULFUROUS ACID, SALTS OF HYDROSULFUROUS ACID, AND ALDEHYDE ADDITION PRODUCTS THEREOF, THE AMOUNT OF SAID BUFFERING AGENT BEING SUFFICIENT TO ADJUST THE PH OF THE SOLUTION WITHIN THE RANGE OF 5.0 TO 8.0.
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