METHODS CODE TABLE

CHLOROPHYLL - Second header code 48
400  Spectrophotometric 
     413  Spectrophotometric (Jeffrey, S.W. and G.F. Humphrey, 1975.)
600  Fluoroscence 
     601  Fluoroscence (in situ - Turner fluorometer - Strickland+Parsons, 1972)
     603  CTD (in-situ flurometer) 
700  HPLC (High Performance Liquid Chromatography) 
860  Van Dorn (Japanese) 


NUTRIENTS - second header code 49
400  Spectrophotometric 
     401  Spectrophotometric (single solution method - Strickland/Parsons,
     402  Spectrophotometric (stannous chloride reduction)
500  Autoanalyzer 
     501  Technicon Autoanalyzer (Murphy and Riley, 1962)
     502  Continuous flow autoanalyzer (CFA) (colorimetric)
     506  Sumigraph Autoanalyzer


ALKALINITY
900   Automated titration
910   Ruppin's method (referenced in Zubov, 1937)
1300  pH meter (potentiometric)


OXYGEN METHODS
300  Winkler method
321  Beckman polarographic oxygen sensor (CTD)


SALINITY METHODS
 201  Titration (Knudsen, 1902)
 202  PSAL78


TEMPERATURE METHODS
 102  T68
 103  ITS-90