โครงงานวิทยาศาสตร์ เรื่อง การเปรียบ

Science project for comparing the effectiveness of stop the mosquitoes of the essential oils from the skin, with Kaffir lime, citronella. A comparative study on purpose to stop mosquitoes during the oil burner from the bergamot and lavender with skin to learn the proper quantity of oil burner used to stop mosquitoes by the lavender and bergamot in the surface ratio of 1000 ml water 800 g per in return.Refined with steam for a period of 2 hours, use 10 drops of essential oil into the water, candles, 20 ml heat. Under the cage, for example, that there is a large number of mosquitoes 20 25 × 35 cm repeat 3 times, it was found that the lavender essential oil is effective in chasing mosquitoes than the oils from the skin, Kaffir lime. Therefore, apply the lavender essential oil to make a study to find the appropriate quantity to stop mosquitoes by the quantity used in the study is 10, 15 and 20 drops three times repeated, it was found that the quantity of 20 drops of essential oil into the appropriate quantity to stop mosquitoes.

Science and compare the performance of mosquito repellent citronella essential oil from the leaves of the kaffir lime skin. The objective was to compare the effectiveness of mosquito repellent citronella essential oil from the leaves of the kaffir lime skin. And to determine the proper amount of oil used in mosquito repellents. Lemongrass and kaffir lime leaf surface using a ratio of 800 gram per 1000 ml of distilled water and steam for 2 hours, then take 10 drops of essential oil to 20 ml of water to heat the candle. Under a mosquito cage sample of 20 measures 25 × 35 cm, repeated 3 times, essential oils of citronella leaves effective repellent than essential oils of bergamot skin. Therefore, the essential oil of lavender leaves to study for a reasonable amount of mosquitoes. The amount used in the study was 10, 15 and 20 drops repeated three times that amount, 20 drops of essential oils is the right amount to keep the mosquitoes away.

Science projects on the comparison of essential oil from ใบตะ mosquito lavender with from the skin of lime.And to study the proper amount of essential oils used in mosquito repellent Lemongrass and kaffir lime leaves by using the ratio of 800 g 1000 ml water in steam distillation for 2 hours and quantity of essential oil Number.A drop into the water 20 ml candles heat under the cage samples with mosquitoes were 20. Size 25 × 35 cm, repeat 3 times.The essential oil from leaves of grass to investigate the proper amount of mosquito repellent Were used in this study is, 1015 20 drops and repeat 3 times showed that essential oil quantity 20 drops. A proper amount of mosquito repellent