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PE3179 Supelco

Simple Nutrients in Seawater - Whole Volume - WP

Proficiency Testing Material

  •  NACRES NA.24



Related Categories Additional Standards, Analytical Standards, Analytical/Chromatography, Proficiency Testing, Water Pollution/Waste Water - Sea Water Matrix,
Quality Level   100
packaging   pkg of 1 × 500 mL
mfr. no.   RTC, PEI-3028-1S
concentration   in H2O
Featured Industry   Environmental
storage temp.   2-8°C


General description

This proficiency testing sample is produced in accordance with ISO/IEC 17043:2010. All information regarding the use of this material can be found in the reporting packet supplied for each sample.

Preparation Note

If a solution is not to be analyzed within two days after opening, preserve a sample aliquot with 0.2 mL of concentrated sulfuric acid per 100 mL of sample (pH<2) and store at 4 degrees C until just before analysis.
Analyze the preserved sample as soon as possible within the maximum 28-day holding time.
NOTE: The acidification of the sample could result in the oxidation of Nitrite, so it is recommended that 100 mL is separated and not preserved if unable to test for nitrite immediately

Sample preparation

The sample is ready for immediate analysis.

Other Notes

Proficiency testing samples are presented as single blind. No values for the samples are released until the testing period concludes. Values of analytes vary lot to lot.

Proficiency Testing Schedule (2020-2021)

WP20-1 January 15 - February 28, 2020
WP20-2 March 25 - May 8, 2020
WP20-3A May 13 - June 26, 2020
WP20-3B July 8 - August 21, 2020
WP20-4 September 23 - November 6, 2020
WP20-5 November 25 - January 8, 2021

WP21-1 January 13 - February 26, 2021
WP21-3 July 7 - August 20, 2021

Quick-Turn Study - (non-scheduled proficiency test that is available at any time)



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Ammonia as N 0.650 - 19.0 mg/L    
Nitrate as N 0.250 - 40.0 mg/L    
Nitrate+nitrite as N 0.250 - 40.0 mg/L    
Nitrite as N 0.400 - 4.00 mg/L    
Orthophosphate as P 0.500 - 5.50 mg/L    
Safety & Documentation

Safety Information

NONH for all modes of transport
WGK Germany 
Flash Point(F) 
Not applicable
Flash Point(C) 
Not applicable


Certificate of Analysis (COA)

Please Enter a Lot Number
Protocols & Articles
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QC3179 Simple Nutrients in Seawater - Whole Volume, certified reference material
08168 Timestrip Plus 8 °C

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