Merck
CN
All Photos(1)

PE1435

Supelco

Diquat/Glyphosate/Paraquat - WS

Proficiency Testing Material

Synonym(s):
SDWA Diquat/Glyphosate/Paraquat
NACRES:
NA.24

Quality Level

packaging

ampule of 2 × 2 mL

concentration

in water

application(s)

environmental

format

matrix material

storage temp.

2-8°C

General description

SDWA Diquat/Glyphosate/Paraquat proficiency testing material is produced in accordance with ISO/IEC 17043:2010. Also referred to as Potable Water or Water Supply sample, this sample is manufactured according to TNI requirements. However, please note, this sample may include non - TNI analytes as well. The lower criteria from the TNI tables mimic the levels common to drinking water samples.

Supelco® is a global proficiency testing (PT) provider that manufactures best-in-class environmental and pharmaceutical PT products. Most water PT samples are available as concentrates or ready-to-use volumes giving the end-user flexibility in selecting samples that will fit their exact needs. Our WS program is designed to meet the quality assurance requirements in compliance with the Safe Drinking Water Act (SDWA), thereby ensuring the analytical competence of your laboratory or drinking water facility.
These samples are typically provided in duplicate for use in case of lab mishap, for QC purposes or to analyze multiple methods.

Type of PT Scheme: Water analysis - Water Supply (WS)

Matrix: Water Supply/Drinking Water

Analyte/s: Values of analytes vary lot to lot.

All information regarding the use of Diquat/Glyphosate/Paraquat - WS proficiency testing standard can be found in the reporting packet which will be available to download at PT Portal.

Application

SDWA Diquat/Glyphosate/Paraquat is a potable water PT standard, suitable for testing diquat/glyphosate/paraquat herbicides in water supply/drinking water samples.

Have any questions? Explore our FAQs
For more information on this product, please contact our PT Service Team.

Features and Benefits

We have a vast portfolio of environmental PT schemes with "fit-for-purpose" samples to help you meet the needs of the laboratory.

Our proficiency testing (PT) program is a benchmark to:

  • provide staff with an insight into their laboratory′s performance, to verify the accuracy and reliability of their testing process
  • provide a comparison of performance with that of other laboratories, nationally and internationally
  • test and educate staff, provide a better understanding of the impact of incorrect results and identify areas where there may be problems
  • provide an independent evaluation of laboratory performance
  • demonstrate to clients, colleagues and accreditation bodies that there is a commitment to quality

Preparation Note

Description

  • 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.

Storage and Stability

Please refer to sample label for expiration date, specific storage temperature, and specific storage conditions.

Other Notes

Are you new to Supelco® Proficiency TestingͰ Be sure to register your account details in the PT Portal before placing your order.
This will provide access to data entry, reporting packets and final reports. Registrations will be approved shortly after your order is placed. For further questions, write to us at ptservice@milliporesigma.com.

When placing your order online, please indicate your study preference under the ′your reference′ column. Available studies can be viewed at the bottom of the page.
Click here to learn more about Quick-Turn Studies (on-demand proficiency tests that are offered depending on lot availability). The Quick-Turn results are released within 48-72 hours whereas scheduled study reports are released within 21 days.

Proficiency testing samples are presented as single blind. No values for the samples are released unti the testing period concludes.

Proficiency Testing Schedule (2022-2023)

Drinking Water
WS22-2 March 23 - May 6, 2022
WS22-4 September 21 - November 4, 2022

WS23-2 March22 – May 5, 2023
WS23-4 September 20 – November 3, 2023


Quick-Turn Study (on demand proficiency test that is offereddepending on lot availability)

Legal Information

Supelco is a registered trademark of Merck KGaA, Darmstadt, Germany

Analyte

Description

    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

Storage Class Code

12 - Non Combustible Liquids

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificate of Analysis

Enter Lot Number to search for Certificate of Analysis (COA).

Certificate of Origin

Enter Lot Number to search for Certificate of Origin (COO).

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service