Precision data - vitamin E

Table 1. Results of interlaboratory studies.

Matrix parameter	Milk powder, α-tocopherol	Milk powder, β-tocopherol	Milk powder, γ-tocopherol	Milk powder, δ-tocopherol	Oat powder, α-tocopherol	Oat powder, β-tocopherol
Repeatability RSDr	3,0 %	11,1 %	5,5 %	10,4 %	9,0 %	10,5 %
Reproducibility RSDR	12,8 %	19,8 %	17,4 %	16,8 %	16,8 %	19,3 %

Data obtained in 1993.