120TKN P or G 500ml 7 days/28
daysadd H 2 SO 4 to
pH<2
Oxygen, dissolved G (BOD) 300ml
Electrode
0.5 hrs/stat ASAP on site
Winkler
8hrs/8 hrs ASAP on site
pH P or G 50ml 2 hrs/stat ASAP on site
Phosphate, GA
Ortho
100ml 48hrs filter ASAP
refrigerate
Total
100ml 28 days/28
daysrefrigerateSolids, P or G
Dissolved
250ml 7 days refrigerate
Settleable
1L 48 hrs refrigerate
Suspended
250ml 7 days refrigerate
Total
250ml 7 days refrigerate
Volatile
250ml 7 days refrigerate
Silica P 200ml 28 days/28
daysrefrigerateSulfate P or G 100ml 28 days/28
daysrefrigerateTurbidity P or G 100ml 24 hrs/48 hrs ASAP/refrigerate,
store in dark up to
24 hrs
Refrigerate = storage at 4 degrees C, in the dark. P = plastic (polyethylene or equivalent); G =
glass, GA or PA = rinsed with 1:1 HNO 3 ; GB = glass, borosilicate, GS = glass rinsed with organic
solvents; NS = not stated in cited reference; stat = no storage allowed; analyze immediately.This course contains EPA’s federal rule requirements. Please be aware that each state
implements drinking water regulations that may be more stringent than EPA’s
regulations. Check with your state environmental agency for more information.