Standard reference materials
Standard reference materials
External reference standards
*International reference standardExternal reference standards
NBS 18*
NBS 19*
LSVEC*
USGS 41*
USGS 45
USGS 46
USGS 47
USGS 61
USGS 62
USGS 63
USGS 88
USGS 89
IU Acetanilide
IAEA N2
IAEA N3*
IAEA 601*
IAEA 602*
Internal working standards
Internal working standards
CM12
Atlantis II
PUGel
Oak
SCDW
Sask
TD