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PE3136 Supelco

Minerals 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,
packaging   pkg of 1 × 500 mL
mfr. no.   RTC, PEI-3027-12S
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

This sample is packaged in a 500 mL HDPE bottle containing approximately 500 mL of solution.
This sample is not preserved.

Sample preparation
This sample has been prepared as a whole volume sample and is ready to be analyzed as received.
Shake bottle well prior to use.
Analyze alkalinity first. Be sure to recap the bottle when not in use to minimize CO2 absorption.
Sample and analyze using your normal methods.
Analyze within 28 day hold time.

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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Alkalinity as CaCO3 10 - 100000 mg/L    
Calcium Hardness as CaCO3 8.7-275 mg/L    
Calcium, Ca 25-110 mg/L    
Hardness, Total as CaCO3 17-440 mg/L    
Magnesium, Mg 2-40 mg/L    
pH 5-10 units    
Potassium, K 4-40 mg/L    
Specific Conductance, Conductivity (25ºC) 0.00 - 100 mmhos/cm    
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)

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Protocols & Articles
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08168 Timestrip Plus 8 °C

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