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PE1435 Supelco

Diquat/Glyphosate/Paraquat - WS

Proficiency Testing Material

  •  NACRES NA.24



Related Categories Additional Standards, Analytical Standards, Analytical/Chromatography, Proficiency Testing, Water Pollution/Waste Water Organics,
Quality Level   100
packaging   ampule of 2 mL
mfr. no.   RTC, PEO-097
concentration   in H2O
Featured Industry   Environmental


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 PT sample is provided as a concentrate requiring dilution into reagent water.
The PT sample can be evaluated for all analytes listed on the report form.
This PT sample is packaged as a 2.0 mL concentrate.
The solvent for this sample is reagent water.
The PT sample is not preserved.
The sample should be stored at 4°C.

Sample preparation

Fill a 1000 mL volumetric flask with 900 mL of reagent water.
Pipet exactly 1.0 mL of the concentrate into the flask.
Bring the flask to volume and mix well.
This is the sample for analysis.
Report your results in μg/L Diquat, Paraquat, and Glyphosate

Other Notes

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

Proficiency Testing Schedule (2020-2021)

Drinking Water
WS20-1 January 15 - February 28, 2020
WS20-2 March 25 - May 8, 2020
WS20-3 July 8 - August 21, 2020
WS20-4 September 23 - November 6, 2020

WS21-1 January 13 - February 26, 2021
WS21-2 March 24 - May 7, 2021
WS21-3 July 7 - August 20, 2021
WS21-4 September 22 - November 5, 2021

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



Product #

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Diquat dibromide monohydrate 8-40 μg/L    
Diquat dibromide monohydrate 8-40 μg/L    
N-(Phosphonomethyl)glycine 375-800 μg/L    
Paraquat 8-100 μg/L    
Safety & Documentation

Safety Information

NONH for all modes of transport
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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