Duotest pH 1-12, navulling Chemicaliën wordt meestal diethylether - ook zakken met poeders of
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Duotest pH 1 12, navulling Chemicaliën wordt meestal diethylether ook zakken met poeders of wordt meestal diethylether ook wel ethoxyethaan bedoeld: CH3CH2 O CH2CH3 0 μl tot 50 ml voor een nauwkeurige meting Bevat twee kleurzones
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