Then bring up the image filter is then used to compare the experimental gas filter efficiency of carbon dioxide divided trial is 1. filter that is used as a tube that go between the gas from the gas tank conveyor carbon dioxide filling water into a beaker.PH value of the water yopthiap RI through carbon dioxide gas. 2. make a trial experiment 1, but change from transparent lime water is water, and then apply clear lime water through carbon dioxide absorbent to remove silt by using absorbent paper. After that, bring a piece of paper to bring the oven to filter sediment derived comparison. The results of the experiments have found that carbon dioxide gas through the water without filter sludge pH value is 3.38 g ... heavy water through filters by filter from cellulose in the pH value, the sludge is Durian shell ... hard ... and g filters by filter from banana peel is pH value in cellulose ... heavy sludge ... g.
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