The two tapes were
- Scotch 25 mm x 50 m Masking Tape for Delicate Surfaces - Beige
and
- Scotch 24 mm x 50 m Greener Masking Tape - Beige
For my first comparison I used 2.5 x 3.5 inch 300gsm Daler Rowney NOT surfaced watercolour paper and my travel Artist watercolours from Cass Art. The colours I chose to use were cobalt blue, cadmium red and cadmium yellow.