Properties:

Description:

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.

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 (2017-2018)

Drinking Water
WS17-1 January 18 - March 3, 2017
WS17-2 March 29 - May 12, 2017
WS17-3 July 12 - August 25, 2017
WS17-4 September 27 - November 10, 2017

WS18-1 January 17 - March 2, 2018
WS18-2 March 28 - May 11, 2018
WS18-3 July 11 - August 24, 2018
WS18-4 September 26 - November 9, 2018

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

Preparation Note

This PT sample is packaged as a 2 mL concentrate.
The solvent for this sample is water.
Store at room temperature.
Analyte concentration range is 1 to 100 mg/L.

Sample preparation
This ampule contains a concentrate for preparation of a solution that can be analyzed for dissolved oxygen.
Because of the unique preparation, it is not necessary to shake the ampule before opening it.
Partially fill a 1000-mL volumetric flask with reagent-grade water (near 20 °C).
Open ampule PEI-1375 (be careful to avoid cuts on glass) and transfer 1.0 mL 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.
Analysis must be started immediately after sample preparation

Safety:

Symbol 

  GHS05