TY - RPRT TI - Standard Reference Materials Glass filters as a standard reference material for spectrophotometry - selection, preparation, certification, and use of SRM 930 and SRM 1930 AU - Burke, R W AU - Messman, J D AU - Smith, M V AU - Colbert, J C AU - Mavrodineanu, R AU - Travis, J C PY - 1994 PB - National Institute of Standards and Technology CY - Gaithersburg, MD SN - NIST SP 260-116 DO - 10.6028/NIST.SP.260-116 ER -