National Measurement Institute
Sample Analytes Approximate Conc. (µg/L)*

AQA 25-13
S1

100 mL

River water 

preserved in
 2% HNO3 (v/w),
 0.01% HCl (v/w)
dissolved elements 

 Ag 0.2-5
Al 2-50
As 0.2-5
Be 0.2-5
Cd 0.2-5
Co 0.2-5
Cr 0.2-5
Cu 1-25
Fe 50-1000
Hg 0.1-2.5
Mn 1-25
Mo 1-25
Ni 0.2-5
Pb 0.2-5
Sb 0.2-5
Se 0.2-5
Tl 0.2-5
V 0.2-5
Zn 1-25

AQA 25-13
S2

100 mL

Sea water 
preserved in
 2% HNO3 (v/w)

for
dissolved elements

 

 Ag 0.05-2
Al <25
As 0.05-5
Be 0.05-2
Cd 0.05-2
Cr 0.05-2
Cu 0.5-10
Fe 0.5-10
Hg 0.010-0.05
Mn 0.5-510
Ni 0.05-2
P <150
Pb 0.05-2
Se 0.05-5
Sn 0.05-5
Tl 0.05-5
U 0.05-5
V 0.1-5
Zn 0.5-10

AQA 25-13 
S3

750 mL

River water

 TDS (dried at 180±5 ºC, mg/L), TSS and TS (dried at 103-105ºC, mg/L), Turbidity (NTU) 10-500

AQA 25-14
S1

400 mL

Frozen sea water 

   mg/L
Ammonia-N, Nitrate-N+Nitrite-N <0.1
Chloride, Fluoride, Sulphate TBA
Dissolved Organic Carbon (dNPOC) <5
Orthophosphate-P (FRP) <0.5
Total Dissolved Nitrogen  <0.1
Total Dissolved Phosphorus <0.1

AQA 25-14
S2

2x200 mL

Frozen river water 

 B, Ca, K, Mg, Na, P, Silica (as SiO2) <1
Ammonia-N, Nitrate-N, Nitrite-N 0.005-0.5
Bromide, Chloride, Sulphate TBA
Dissolved Organic Carbon (dNPOC) <25
Orthophosphate-P (FRP) <0.5
Total Dissolved Nitrogen  <1
Total Dissolved Phosphorus <0.5

AQA 25-14
S3

2x200 mL

Chilled seawater

 B, Ca, K, Mg, Na, Silica (as SiO2) TBA
Alkalinity to pH 4.5 as CaCO3 <100
Total Hardness (CaCO3) <10000
pH (at 25°C), EC (at 25°C) (µS/cm) TBA

Price AUD $

TBA

Notes

* As these samples are real samples, the values given are indicative, based on the range of materials used in previous rounds.

TBA = to be advised.