1. to study the use of quantity of ashes from wood charcoal. In order to increase the probability of alkaline drinking water from a drinking water from the filtration with volume 1 litre, pH at 8.5-Variables-variables that have an ash quantity indicator g is a variable, and the variable according to the pH is under extreme pressure, temperature, water, and air are naturally water 1 liter is the control variable. 2. to find the volume of the water from the filter to the water with a pH value 8.5 reduced until the pH is normal-volume water Variables the variables is the variable and value is the ML pH is variable according to the under pressure, temperature, water, and air are the natural water content 1 liter pH 8.5.
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