25g of fine natural Indigo.
30g of Thiourea Dioxide ( also known as spectralite) the reducing agemt that removes oxygen from the indigo vat
The Colour of the Sea and Sky The Art of Indigo Dyeing. as the covers are hand painted the covers may differ from that shown
I pack of pH paper
You will also need Caustic soda ( Sodium Hydroxide) and washing soda.( Sodium Carbonate) These are available from hardware shops