Elements

Analysis methods

Ca²⁺, Mg²⁺

Atomic absorption spectrometry (AFNOR standards NFT 90-005)

Molecular absorption spectrometry (AFNOR standards NFT 90-045)

K⁺, Na⁺

Atomic absorption spectrometry (AFNOR standards NFT 90-020)

Molecular absorption spectrometry (AFNOR standards NFT 90-040)

Molecular absorption spectrometry (AFNOR standards NFT 90-023)

Fe

Molecular absorption spectrometry (AFNOR standards NFT 90-017)