Hach DR/850, Procedures Manual, Page: 5 / 460

5
TABLE OF CONTENTS,
continued
FLUORIDE, SPADNS 2 Method.......................................................................................... 177
HARDNESS, Calcium and Magnesium; Calmagite Colorimetric Method .......................... 185
IRON, FERROUS, 1,10 Phenanthroline Method ................................................................. 189
IRON, TOTAL, FerroVer Method......................................................................................... 195
IRON, TOTAL, FerroMo
™
Method...................................................................................... 203
IRON, TOTAL, TPTZ Method ............................................................................................. 207
MANGANESE, High Range, Periodate Oxidation Method ................................................. 215
MOLYBDENUM, MOLYBDATE, Low Range, Ternary Complex Method........................ 219
Nitrogen, Free Ammonia and Chloramine (Mono), Indophenol Method ............................. 225
NITRATE, High Range, Cadmium Reduction Method ........................................................ 235
NITRATE, Low Range, Cadmium Reduction Method ......................................................... 243
NITRITE, Low Range, Diazotization Method...................................................................... 249
NITRITE, Low Range, Test ‘N Tube, Diazotization Method............................................... 255
NITROGEN, AMMONIA, Salicylate Method ..................................................................... 259
NITROGEN, AMMONIA, Low Range, Test ‘N Tube, Salicylate Method.......................... 265
NITROGEN, AMMONIA, High Range, Test ‘N Tube, Salicylate Method ......................... 271
NITROGEN, Total Inorganic, Test ‘N Tube
™
, Titanium Trichloride Reduction Method.... 277
OXYGEN DEMAND, CHEMICAL, Manganese III Digestion Method ............................. 285
ORGANIC CARBON, TOTAL, Low Range, Direct Method .............................................. 291
ORGANIC CARBON, TOTAL, Mid Range, Direct Method ............................................... 299
ORGANIC CARBON, TOTAL, High Range, Direct Method.............................................. 307
OXYGEN DEMAND, CHEMICAL, Manganese III Digestion Method ............................. 315
OXYGEN, DISSOLVED, High Range, HRDO Method ...................................................... 325
OXYGEN, DISSOLVED, Low Range, Indigo Carmine Method ......................................... 329
OZONE, Indigo Method ....................................................................................................... 333
pH, Colorimetric pH Determination Using Phenol Red ....................................................... 337
PHOSPHONATES, Persulfate UV Oxidation Method ......................................................... 341
PHOSPHORUS, REACTIVE, (Also called Orthophosphate) PhosVer 3 (Ascorbic Acid)
Method............................................................................................................................ 347
PHOSPHORUS, TOTAL, (Also called Organic and Acid Hydrolyzable) Acid Persulfate
Digestion Method ........................................................................................................... 355
PHOSPHORUS, ACID HYDROLYZABLE, Hydrolysis to Orthophosphate Method ........ 359
PHOSPHORUS, REACTIVE, PhosVer 3 Method, Test ’N Tube Procedure ....................... 363
PHOSPHORUS, ACID HYDROLYZABLE, PhosVer 3 with Acid Hydrolysis .................. 371
PHOSPHORUS, TOTAL, PhosVer 3 with Acid Persulfate Digestion ................................. 379
PHOSPHORUS, REACTIVE, Amino Acid Method............................................................ 387