pH inidicator paper set DUOTEST consisting of each 2 rolls pH 10-120 / 3
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pH inidicator paper set DUOTEST consisting of each 2 rolls pH 1,0-12,0 / 3,5-6,8 / 5,0-8,0 / 7,0-10,0 and 1 role 1,0-4,3 / 9,5-14,0; role = 5m