PE1050 Supelco

Residue - WP

Proficiency Testing Material

  •  NACRES NA.24



Related Categories Additional Standards, Analytical Standards, Analytical/Chromatography, DMRQA PTs, Proficiency Testing,
Quality Level   100
packaging   ampule of 1 × 1.5 g
mfr. no.   RTC, PEI-030
matrix   NaCl
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 a solid concentrate.
The matrix for this sample is NaCl.

Sample Preparation
Partially fill a 1000 mL volumetric flask with reagent-grade water.
Open container PE1050-1.5G and transfer entire contents to volumetric flask.
Transfer to the volumetric flask using a glass funnel.
Rinse the vial, cap and funnel with reagent-grade water and transfer to volumetric flask.
Fill the volumetric flask to volume (1000 mL) and mix by inverting the flask 10 times.
Allow sample to rest for 10 minutes and invert 10 more times.
Immediately after the second set of inversions, rapidly measure a 500-mL aliquot into a graduated cylinder by repetitively mixing and pouring so as not to allow solids to settle in the flask before the transfer is complete.
The sample is now ready for immediate analysis.
Filter this 500 mL aliquot and determine the analytes according to the chosen method(s).
Remember to correct back to 1000 mL.

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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Total Solids (TS) 140-675 mg/L    
Total Dissolved Solids at 180 °C (TDS) 140-650 mg/L    
Non-Filterable Residue (TSS) 23-100 mg/L    
Safety & Documentation

Safety Information

GHS08  GHS08
Signal word 
Hazard statements 
Precautionary statements 
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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QC1050 Residue, certified reference material

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