501-645 SAAR1651 1g O/N in Steel Pin Standard , 0.0057% O, 0.0210% N 100   钢中氧氮标样

762-747 SAAR546 1g Hydrogen in Steel Pin Standard , 1.1 PPM H 100pcs   钢中氢标样

502-061 SAAR555 1g Hydrogen in Steel Pin Standard , 3.4 PPM H 100 pcs  钢中氢标样

501-529 /502-060  SAAR556 1g Hydrogen in Steel Pin Standard , 5.0 PPM H 100    钢中氢标样

501-644 SAAR644 1g O/N in Steel Pin Standard , 3PPM O, 157PPM N 100 钢钉标样