Copper sulfate, a naturally occurring and manufactured copper salt, is used as a fungicide on crops, as a pesticide to kill snails and slugs, and as water treatment to kill aquatic vegetation. This chemical has serious chronic toxicity with implications for agricultural workers and the environment.
1 Keep the refrigerator temperature at or below 40Â° F (4Â° C). 2  The freezer temperature should be 0Â° F (-18Â° C). 3  Check temperatures periodically. 4  Appliance thermometers are the best way of knowing these temperatures and are generally inexpensive.
  the perfect temp for your refrig is 35 Hi there the ideal fridge temperature â¦ is 3-5 degrees centergrade .This is the ideal temp for a fridge as bacteria are imobolized by the coldness which means no reproducing and making your food go off.The temperature is also low enough to not be freezing your foods. the perfect temp for your refrig is 35 Hi there the ideal fridge temperature â¦ is 3-5 degrees centergrade .This is the ideal temp for a fridge as bacteria are imobolized by the coldness which means no reproducing and making your food go off.The temperature is also low enough to not be freezing your foods.