cupric sulfate on white. bright, blue copper sulfate, cuso4

algicide also background blue bluestone bright called chemical chemicals chemistry close closeup compound copper crystal crystals cupric cuso4 education element fireworks formula galvanic grains grainy granules grow herbicide hygroscopic inorganic isolated laboratory macro magnification manufacture mineral pile pools powder salt schools science shredded substance sulfate sulfuric sulphate swimming texture toxic translucent used vitriol water white