The water-based ink set for ink-jet recording includes a magenta ink and a red ink with dynamic surface tensions thereof satisfying the following inequalities (I.sub.M), (II.sub.M), (III.sub.M) and (IV.sub.M) .sigma..sub.30M.ltoreq.about 49 mN/m (I.sub.M) .sigma..sub.30M+.sigma..sub.30R.ltoreq.about 100 mN/m (II.sub.M) wherein .sigma..sub.30M is the dynamic surface tension of the magenta ink at a lifetime of 30 ms and .sigma..sub.30R is the dynamic surface tension of the red ink at a lifetime of 30 ms, .sigma..sub.1000R.gtoreq.about 36 mN/m (III.sub.M) .sigma..sub.1000M+.sigma..sub.10000R.gtoreq.about 70 mN/m (IV.sub.M) wherein .sigma..sub.1000 M is the dynamic surface tension of the magenta ink at a lifetime of 1,000 ms and .sigma..sub.1000R is the dynamic surface tension of the red ink at a lifetime of 1,000 ms).

 
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> PROCESS FOR THE PRODUCTION OF LEAD HYDRATE OR MONOXIDE OF HIGH PURITY, FROM MATERIALS AND/OR RESIDUES CONTAINING LEAD IN THE FORM OF SULPHATES, MONOXIDES AND/OR OTHER COMPOUNDS

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