TY - RPRT TI - Certification of standard reference material 2193b: calcium carbonate [used as saturated Ca(OH)2 solution] AU - Easley, Regina A AU - Waters, Jason F AU - Guthrie, William F PY - 2019 PB - National Institute of Standards and Technology CY - Gaithersburg, MD SN - NIST SP 260-197 DO - 10.6028/NIST.SP.260-197 ER -