Supplier Page from Thermo Fisher Scientific for ColorpHast:r pH Strips, Narrow, one square with single indicator on each strip, 0-2.5 pH range
4-Ethylphenol, 97% from Thermo Fisher Scientific
Ethyl 2-mercaptoacetate, 99% from Thermo Fisher Scientific
Ethyl 4-chlorobutyrate, 97% from Thermo Fisher Scientific
Fluorobenzene, 99% from Thermo Fisher Scientific