We are offering filter paper dr watts 9 cm etc. we offer high quality filter papers that are extensively used in all kinds of laboratries. We are the registered owner, manufacturer and wholesaler of the leading brand dr. Watts filter paper. Below are the sizes available in filter paper:- 5 cm 7 cm 9 cm 11 cm 12.5 cm 15 cm 18 cm 24 cm they are available in the pack of 100 papers. Our company is registered with trade mark authority for brand dr watts and eki.