Pour off liquid and wash the amalgam with water several times. Store the amalgam under water in a sealed jar. In a large beaker, dissolve 6 - 8 grams of to completely dissolve the compound. Dilute to 1 Liter. Store well stoppered.
Mercuric chloride is highly toxic.
Wear gloves and safety goggles. Wear mask when measuring zinc powder. Do not breath in zinc powder. Damage to mucous membranes could result. Add 200 mL of vanadium solution.