Preparation and alkali.How to prepare a low 50% w/w.1. weighing 1 kg NaOH2. water weighing 1 kg3. bring water, put the beaker and casting with cold water.4. carefully pour the water into alkaline and make melt * beware, because high heat.5. wait until the solution alkaline cooling down. Filter through cotton stored in plastic containers endured spottedOff label for preparation.
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