Lab reports - method codes

Updated: 15 May 2013 (new reference standards added)

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Lab reports contain space to detail the methodology used to make the determinations. Details of Delta's commonly used test methods and information about speciation of analyses are provided here.

The minimum requirement on lab reports is to report the method used, as detailed in the Method column below. Additional details from the Reference and Special notes columns may be incorporated as necessary.

In some cases several methods are in common use. In such a case, select the mthod used to conduct the specific analysis being reported.

Available chemical tests for waters
Method

Reference

Special notes
alkalinity of waters
Titration, Merck 11109
APHA 2320-Alk-B

AS2093-1977 (P)

ASLSH Alkalinity

See ASLSH for speciation of carbonate, bicarbonate and hydroxide alkalinity
aluminium (available) in waters (min detection limit 0.02 mg/L)
Vis-spectrometry, Merck 100594

APHA 3500-Al-D

Chromazurol S
ammonium test for waters
Vis-spectrometry, Merck 14558

APHA 4500-NH3-D

Blue indophenol deriv. Measures NH4 form of N
arsenic in waters (min detection limit 0.1 mg/L)
Arsine generation, Hach 8013

US EPA

Mercuric chloride. Measures inorganic As. Method may be adapted to measure organic forms as well.
barium in waters
Turbidimetry, Hach 8014

Adapted from Snell and Snell, Colorimetric Methods of Analysis, Vol. II, 769 (1959)

 
biochemical oxygen demand (BOD 5 ) of waters
Oxitop (mercury-free manometer)

APHA 5210-BOD-D

 
cadmium in waters (min detection limit 0.002 mg/L)
Vis-spectrometry, Merck 14834

Cadion deriv
calcium in waters
Titration, EDTA

APHA 3500-Ca-D

AS2093-1977 (O)

Glyoxal-bis indicator
chloride in waters
Titration, Mohr's argentometric

AS2093-1977 (G)

APHA 4500-Cl-B

Potassium chromate indicator
chlorine (total and free) in waters
Vis-spectrometry, Merck 00599

US EPA

APHA 4500-Cl-G

DPD
colour of waters
Vis-spectrometry

Apparent

APHA 2120-Color-C

Derived from AT Palin (1955) "Photometric determination of the colour and turbidity of water." Water & Water Engineering, 59:341-345

 
copper (available) in waters (min detection limit 0.05 mg/L)
Vis-spectrometry, Merck 14767

Cuprizone.Measures ionic Cu(II)
copper (total) in waters (min detection limit 0.05 mg/L)
Vis-spectrometry after acid thermal digestion, Merck 14767
  Cuprizone. Measures ionic, organically bound and undissolved Cu.
electrical conductivity of waters
Meter

ASLSH B1a

KCl calibration
hardness (total) test for waters
Titration, EDTA

 

Eriochrome EDTA tablet count (Lovibond)

APHA 2340-Hardness-C

AS2093-1977 (O)

 

Eriochrome indicator

 

Field method only

hardness (total and separate Ca & Mg determination) for waters
Titration (EDTA) and calculation

AS2093-1977 (O)

Eriochrome indicator
iodine in waters (min detection limit 0.05 mg/L)
Vis-spectrometry, Merck 00606

CCAM

DPD
iron (available) in waters (min detection limit 0.03 mg/L)
Vis-spectrometry, Merck 14761

Triazine deriv. Meaasures bivalent & trivalent forms, and fresh colloidal iron hydroxide
iron (total) in waters (min detection limit 0.03 mg/L)
Vis-spectrometry after acid thermal digestion, Merck 14761
  Triazine deriv. Measures bivalent & trivalent forms, fresh colloidal iron hydroxide, aged iron hydrocxides, iron oxides and complex-bound iron.
lead (available) in waters (min detection limit 0.05 mg/L)
Vis-spectrometry, Merck 09717

PAR deriv. Measures ionic Pb only.
lead (total) in waters (min detection limit 0.05 mg/L)
Vis-spectrometry after acid thermal digestion, Merck 09717
  PAR deriv. Measures ionic Pb as well as colloidal, undissolved and complex-bound Pb.
magnesium in waters
Titration, EDTA

Vis-spectrometry, Merck 00815

AS2093-1977 (O)

 

Eriochrome indicator

Phthaleinkomlexone

nitrogen - oxidised nitrogen test for waters (nitrate + nitrite)
Vis-spectrometry, Griess-Ilosvay reaction after zinc reduction

ASLSH G2a

Sulfanilamide derived azo dye. Measures NO2 and NO3
nitrogen - separate analysis of nitrite and nitrate in waters
Vis-spectrometry, Griess-Ilosvay reaction after zinc reduction

ASLSH G2a

Sulfanilamide derived azo dye. Measures NO2 and NO3
nitrogen (total) test for waters
Vis-spectrometry after Koroleff digestion, Merck 00613

2,6-dimethylphenol (DMP) Measures all forms of N (NH4, NO2, NO3 and organically bound N).
oxygen (dissolved) in waters (in-situ)
Meter

APHA 4500-O-G

 
pH of waters
Meter

APHA 4500-H+-B

ASLSH C1a

 
phosphorus - dissolved orthophosphate test for waters
Vis-spectrometry after filtration, Merck 14543

USEPA

APHA 4500-P-E

Phosphomolybdenum blue (PMB). Measures soluble orthophosphate.
phosphorus - total orthophosphate test for waters
Vis-spectrometry, Merck 14543

USEPA

APHA 4500-P-E

Phosphomolybdenum blue (PMB). Measures all orthophosphate.
phosphorus - total phosphorus test for waters
Vis-spectrometry after acid thermal digestion, Merck 14543

USEPA

APHA 4500-P-E

Phosphomolybdenum blue (PMB). Measures orthophosphate, polyphosphate and organically bound phosphate.
silicate in waters (min detection limit 0.005 mg/L)
Vis-spectrometry, Merck 14794

APHA 4500-Si-D

Silico-molybdenum blue
solids (settleable) in waters
Imhoff cone

APHA 2540-Solids-F

 
solids (suspended) in waters
Gravimetry

APHA 2540-Solids-D

 
sulfur - sulfide in waters
Vis-spectrometry, Merck 14779

APHA 4500-S2-D

USEPA 376.2

ISO 10530

Dimethyl-p-phenylenediamine.
sulfur - sulfate in waters
Turbidimetry, Merck 14548 & Merck 14564

APHA 4500-SO4-E

USEPA

Barium sulfate
total organic carbon in waters
Vis-spectrometry after peroxodisulfate digestion, Merck 14878

Measures organically bound carbon in dissolved and undissolved compounds. Inorganic carbon (eg carbonates and CO2) is expelled in gaseous formin an early step.
turbidity of waters
Turbidity meter

Vis-spectrometry

APHA 2130-Turbidity-B

Derived from AT Palin (1955) "Photometric determination of the colour and turbidity of water." Water & Water Engineering, 59:341-345

 
calculated results (eg TDS by calculation from EC)
Calculation

ASLSH B1b

Baseggio G (1974) “The Composition of Seawater and Its Concentrates” in Fourth Symposium on Salt, Vol 2:351-358 (1974) Northern Ohio Geological Society, Ohio

Williams WD (1986) “Conductivity and Salinity of Australian Salt Lakes” in Australian Journal of Marine and Freshwater Research 37:177-82

Williams WD and JE Sherwood (1994) “Definition and measurement of salinity in salt lakes” in International Journal of Salt Lake Research 3:53-63

 
       
Available chemical tests for soils
Method

 
electrical conductivity of soils
1:5 (soil:water) extraction, then meter

ASLSH 3A1

KCl calibration
nitrogen - water soluble oxidised nitrogen in soil (fertility test)
1:5 (soil:water) extraction then vis-spectrometry, Griess-Ilosvay reaction after zinc reduction

ASLSH 7B1

Sulfanilamide derived azo dye. Measures NO2 and NO3
oil in soils (TPH) presence
Friedel-Crafts reaction and portable vis-spectrometry field protocol

US EPA (EPA/600-R-01/082)

 
pH of soils
1:5 (soil:water) extraction, then meter

ASLSH 4A1

 
phosphorus - calcium chloride extractable phosphorus in soil (fertility test)
Vis-spectrometry after dilute calcium chloride extraction, Merck 14543

ASLSH 9F1

APHA 4500-P-E

Phosphomolybdenum blue (PMB). Measures the labile P. This measure (in ug) is highly correlated with yield response in soybeans and potatoes.
phosphorus in soil - bicarbonate extractable (fertility test)
Vis-spectrometry after bicarbonate (Olsen's) extraction, Merck 14543

ASLSH 9B1

APHA 4500-P-E

Phosphomolybdenum blue (PMB). Measures orthophosphate.
soil moisture
Gravimetry, oven-dried at 105oC

ASLSH 2A1 & 2B1

 
soil sodicity (indicator, CRC Soil & Land Management)
Visual dispersion, field test

Rengasamy P and J Bourne (1994) Managing Sodic, Acidic and Saline Soils, CRC Soil & Land Management. Adelaide.

 
acid extractable metals (iron, copper, lead, aluminium, magnesium, calcium and cadmium are available)
Vis-spectrometry after acid thermal digestion

See methods for separate parameters in water testing section of this table
 
 

 
Available biological tests
Method

 
microbiology - plankton counts & ID (waters)
Microscopy after sedimentation

APHA 10200-Plankton-C to APHA 10200-Plankton-F

 
microbiology - presence/absence (waters) of total coliform & E.coli
Chromogenic media - IDEXX Colilert-18

APHA 9223-Coliforms-B

US EPA 40 CFR 136.3

For fresh and brackish waters, marine only with dilution. Separately determines total coliforms and Escherichia coli, as an expression of β-galactosidase and β-glucuronidase
microbiology - presence/absence (waters) of enterococci and d-streptococci
Chromogenic media - IDEXX Enterolert

APHA 9230- Enterococci-D

ASTM #D6503-99

US EPA 40 CFR 136.3

For fresh, marine, estuarine and groundwater. Detects D-streptococci and Enterococci faecalis, E. faecium, E. avium, E. gallinarum, E. casseliflavis, and E. durans
microbiology - COUNT - aerobic plate (Total viable count for waters or surfaces)
Agar slide with selective media - Merck Envirocheck dip and contact slides

 
microbiology - COUNT - yeasts & moulds plate (waters or surfaces)
Agar slide with selective media - Merck Envirocheck dip and contact slides

 
microbiology - COUNT - enterococci (waters)
Chromogenic media - IDEXX Enterolert with quantitray

APHA 9230- Enterococci-D

ASTM #D6503-99

US EPA 40 CFR 136.3

For fresh, marine, estuarine and groundwater. Detects D-streptococci and Enterococci faecalis, E. faecium, E. avium, E. gallinarum, E. casseliflavis, and E. durans
microbiology - COUNT - enterococci (surfaces) Agar slide with selective media - Merck Envirocheck contact slides (surfaces)    
microbiology - COUNT - total coliforms & E.coli (waters)
Chromogenic media - IDEXX Colilert-18 and quantitray

APHA 9223-Coliforms-B

US EPA 40 CFR 136.3

ISO 9308-2:2012

For fresh and brackish waters, marine only with dilution.Separately determines total coliforms and Escherichia coli, as an expression of β-galactosidase and β-glucuronidase.
microbiology - COUNT - total coliforms & E.coli (surfaces) Agar slide with selective media - Merck Envirocheck contact slides (surfaces)    
 
 

 
Available air quality testing
Method

 
Microbial counts - total viable, coliforms or yeasts & moulds
Impactor type microbial air sampler with agar plates and selective media

 

 

Code

 

Reference

 

APHA
Eaton AD, Clesceri LS & AE Greenberg eds. (1995) Standard Methods for the Examination of Water and Wastewater, APHA, AWWA, WEF, Washington.
AS2093-1977
Australian Standard 2093-1977 Salt for Use in the Manufacture of Dairy Products, Standards Association of Australia. Sydney.
ASLSH Rayment GE & FR Higginson (1992) Australian Laboratory Handbook of Soil and Water Chemical Methods. Australian Soil and Land Survey Handbook Vol 3, Inkata Press Melbourne.
ASTM American Society for Testing and Materials
CCAM

Thomas LC and GJ Chamberlin (1953) Colorimetric Chemical Analytical Methods (CCAM). The Tintometer Limited. Salisbury.

ISO International Standards Organisation
USEPA Method approved by the US EPA (either an independant method, or one of the US EPA's own methods such as SW-846, NTIS, ECM, 40CFR etc)

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