Capillator by British Drug Houses Ltd
Boxed set of thymol blue "Capillators"
1952
"Capillator" with a methyl red dye
1969
Boxed set of phenol red "Capillators"
1965
Boxed set of phenol red "Capillators"
1950
Phenol red "Capillators" with pH range of 6.8 to 8.4 in paper packet
1944
Boxed set of bromo-thymol blue "Capillators"
1952
The B.D.H. Capillator
1900-1980
Bromo thymol blue "Capillators" with pH range of 6.0 to 7.6 in paper packet
1942