501-501 1g C/S Ring Standard 0.032% C, 0.033% S 454g 碳硫标样，碳：0.032%；硫：0.033% 

501-502 SAAR871 1g C/S Ring Standard, 0.051% C, 0.034% S   454g  碳硫标样

501-503 SAAR872 1g C/S Ring Standard, 0.180% C, 0.019% S  454g   碳硫标样

501-504 SAAR873 1g C/S Ring Standard, 0.468% C, 0.0109% S   454g  碳硫标样

501-505 SAAR874 1g C/S Ring Standard, 0.723% C, 0.022% S   454g  碳硫标样

501-506 SAAR875 1g C/S Ring Standard, 0.829% C, 0.0067% S   454g 碳硫标样