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Tenders are invited for Supply of Sulphuric Acid, Pyrogallic acid, Potassium Hydroxide, Mercury Metal, Silica Dish with Lid, VM Crucible with Lid, Borosilicate Petri Dish 100mm, Beaker Borosilicate 50ml, Beaker Borosilicate 100ml, Borosilicate Flask 100ml, Glass Pipette 10ml, Hot Plate 12x10x6, Barometer, Hydrometer, Thermometer Straight 110C
1] pyrogallic acid standard solution, with 200 [micro]L of FC reagent and then by completing it with a 10% sodium carbonate in 5.
It was developed with a solution of pyrogallic acid, with cyanide used to remove any excess.