Supplier Page from Thermo Fisher Scientific for Bromothymol Blue
Benzalkonium chloride, alkyl distribution C8-C16, 50 wt% aqueous solution from Thermo Fisher Scientific
D-Cystine, 98% from Thermo Fisher Scientific
Farnesol, 96%, mixture of isomers from Thermo Fisher Scientific
Trimethyloxonium tetrafluoroborate, 95% from Thermo Fisher Scientific