Canon Pixma MG2540S was designed for the European/Middle Eastern market and has got pretty good support on the Canon website so check there first before using the direct links below.
Ink Cartridges used:
PG-245/PG-243: Pigment Black Ink
CL-246 /CL-244: Dye Based Color Ink
FINE INK CARTRIDGE & FILL VOLUME
PG-245 PGBK 8.0 ml (Std) / 12.0 ml (XL)
CL-246 Color 9.0 ml (Std) / 13.0 ml (XL)
PG-243 PGBK 5.6 ml
CL-244 Color 6.2 ml