Episode 1 to extract calcium carbonate from the shells.1. bitter shells. Cherry bark and shells snail comes clean 2. bring the Sun to dry thoroughly then 500 g each type scale bring bring shells to roast over medium heat. 3. bring the shells that pounded through the roasting to give details until the white powder gray or grey.4. bring powder extracted from bitter shells. Cherry bark and shells, snail, come and find the appropriate ratio.PH measurement 2. study the optimal ratio to enhance the framework of fruit.1. puree the shells brought in 5 g 10 g mass, 3 g and 20 g of all three types of shells and.Calcium hydroxide to mix 200 ml of water, wait for it after sedimentation water filter water and bring it to sai Temple, pH value and soaked the fruit is a 5-minute observation and recording results.
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