Sulfur in Water - WP

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.

This PT sample is packaged as a 20mL concentrate.
The solvent for this sample is water.
The PT sample has been autoclaved for preservation

Sample Preparation
Partially fill a 1000mL volumetric flask with reagent-grade water (near 20ºC).
Open ampule PE1285-20ML (be careful to avoid cuts on glass) and transfer 10.0mL of concentrate to the volumetric flask.
Fill the volumetric flask to volume with reagent-grade water and mix well.
The sample is now ready for immediate analysis.
Sealed ampules were autoclaved to preserve the solutions inside. This preservation treatment is not effective after the ampule is opened. Therefore, the sample should be analyzed as soon as possible after sample preparation.

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 (2019-2020)

Wastewater
WP19-1January 16 - March 1, 2019
WP19-2March 27 - May 10, 2019
WP19-3AMay 15 - June 28, 2019
WP19-3BJuly 10 - August 23, 2019
WP19-4September 25 - November 8, 2019
WP19-5November 20 - January 3, 2020

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

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