Supplier Page from Thermo Fisher Scientific for Calcium oxalate monohydrate, Puratronic:r, 99.9985% (metals basis), (excluding 25ppm max alkali earths)
1-Ethynyl-1-cyclohexanol, 99+% from Thermo Fisher Scientific
Ethylcyclohexane, 99+% from Thermo Fisher Scientific
Ethylenediaminetetraacetic acid, tetrasodium salt hydrate, 98%, pure from Thermo Fisher Scientific
Fluorescein, pure from Thermo Fisher Scientific