prov:value
| - ary reducing agent such as glycerine, is dip-coated onto the base, dried and exposed to a chemical reducing agent, e.g., an alkali metal borohydride, e.g., sodium or potassium borohydride, an alkali metal hydrosulfile, e.g., sodium hydrosulfite, or an amine borane, e.g., dimethylamine borane or morpholine borane in an aqueous or non-aqueous solvent, e.g., water or methanol, for about 1 to 2 min. o
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