TY - GEN AU - Machlan, Lawrence A AU - Mandel, John AU - Paule, Robert C AU - Gramlich, John W AU - Velapoldi, Rance A C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1979-01-01 05:01:00 DO - https://doi.org/10.6028/NBS.SP.260-63 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1979 TI - Standard Reference Materials:A reference method for the determination of potassium in serum ER -