Standard samples/34 metal mixed standards/aluminum, arsenic, boron, barium, beryllium, bismuth, calcium, cadmium, cobalt, chromium, copper, iron, gallium, germanium, mercury, potassium, lithium, magnesium, manganese, molybdenum, sodium, nickel, phosphorus, lead, platinum, rubidium, antimony, selenium, tin, strontium, titanium, thallium, vanadium, zinc