Supplier Page from Thermo Fisher Scientific for 1,3-Diphenylguanidine, primary standard, 99+%
Calcium carbonate, chelometric standard, ACS, 99.95-100.05% from Thermo Fisher Scientific
Lanthanum, plasma standard solution, Specpure:r, La 1000µg/mL from Thermo Fisher Scientific
Praseodymium, plasma standard solution, Specpure:r, Pr 1000µg/mL from Thermo Fisher Scientific
Tin(II) chloride dihydrate, low in Mercury, suitable for AAS from Thermo Fisher Scientific