Whatman Filter Paper
1920-1950
"Whatman" No.542 filter paper
Filter paper
Filter paper, "J Green" Hand Made, 18cm diameter
Filter paper, "J Green" Ashless, 9cm dia, boxed
Green's 401 filter paper
"Whatman" No.540 filter paper
"Whatman" No.43 filter paper
J H Munktell's No.1F filter paper
"Whatman" No.51 filter paper cones
"Whatman" No.32 filter paper
"Whatman" No.44 filter paper
Filter papers
Box of filter paper made by W.&R. Balston Limited
circa 1970
"Whatman" No.42 filter paper
"Whatman" No.3MM filter paper
"Whatman" No.42 filter paper
"Whatman" No.44 filter paper
"Whatman" No.54 filter paper
"Whatman" No.4 filter paper
Filter paper, 11.5cm, by Postlip Mills
Filter paper
Green's 401 filter paper
"Whatman" No.30 filter paper
"Whatman" No.42 filter paper
Separa AP Grade filter paper
Separa AP Grade filter paper
"Whatman" No.54 filter paper
"Whatman" No.31 filter paper
Qualitative Filter paper circles
"Whatman" No.4 folded filter paper
Carton of Filter Papers, 1962-1965
1962-1965
Filter paper
Packet of conical large chemical filter papers made by Carl Schleicher & Schull
circa 1900
Filter paper packet
1930
"Whatman" filter paper
"Whatman" No.540 filter paper
Box of 'Sterimat' chemical filter papers made by Ford Ltd
circa 1900
Nine packets of small circular filter papers and numerous loose filter papers in non-original box
circa 1900; circa 1900
Packet of conical large chemical filter papers made by Carl Schleicher & Schull
circa 1900
Filter samples, British, 1996-1999
1996-1999