Table 1.

Summary of the main statistics for the results of mercury content in both certificate reference materials (n = 27) (µg/kg).

CRM	n	Mean	Median	Min	Max	Stand. Dev.	Range	p-Value	Certified Value +/− Uncertainty	Recovery (%)
M-3 HerTis (µg/kg)	27	227	225	216	238	5.0	22.4	0.93	227 ± 21	99.9
M-5 CodTis (µg/kg)	27	309	309	290	329	8.4	38.9	0.03	310 ± 22	99.6