you need
  • - copper sulfate (copper sulphate, CuSO4);
  • - heat-resistant glass chemical flask or glass jar;
  • - seed on a string (a piece of copper wire);
  • - sandpaper;
  • - a sheet of paper;
  • - stem from a ballpoint pen;
  • - gauze;
  • - rubber gloves;
  • - distilled or boiled water.
Prepare all necessary materials.It is best to buy as much as possible pure copper sulfate, which is commercially available reagents (recognized analytical grade, chemically pure, NA).If this is not possible, use copper sulfate from the hardware store.The more pure substance you use, the more beautiful wi
ll be the crystals.You'll also need to heat-resistant glass chemical flask to dissolve the substance.Suitable and conventional small bank of glass, for example, 0.7 or 1 liter.Before use, carefully rinse the selected container.
If you use pure copper sulfate from a store of reagents, for best results, take the distilled water.For conventional copper sulfate from the hardware store suit boiled.
Now we need to make a saturated solution.Heat water to 60-70 degrees.Gradually add in her copper sulfate, immediately stirring it.To do so until as long as blue powder does not redissolve, this means that the solution is prepared.It is important that the liquid thus remains hot.When it has cooled, place the container in a water bath and heat the solution.
When a saturated solution ready, filter it.For this strain the liquid through cheesecloth into another glass dish.Use hot glassware, or copper sulphate can be crystallized ahead of time.To avoid this, simply rinse the jar or a beaker of hot water.
as a seed you can use a piece of copper wire.Sand it with sandpaper, give the desired shape and tie a string to it.Or you can wait until the bottom of the jar with a supersaturated solution form small crystals of copper sulphate, and has to use them as a seed.
Crystals will appear on the bottom of the vessel itself, if the solution has a sufficient concentration.Take them dry.As the seed is best to use the largest of formations and a smooth, preferably without external defects.Tie it with a thread.If it slips, you can grind a little crystal in the middle, making the recess.
Place seeded with a crystal of copper wire or inside banks - so that the sinker does not touch the walls or the bottom of the vessel.To do this, you can tie a string to the shaft of a ballpoint pen and put it on the neck.Now, cover the jar with paper and leave for a few days.