Sigma-Aldrich/Alkalinity - WP/PE1076-20ML/20ML

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)

Wastewater
WP17-1 January 18 - March 3, 2017
WP17-2 March 29 - May 12, 2017
WP17-3A May 17 - June 30, 2017
WP17-3B July 12 - August 25, 2017
WP17-4 September 27 - November 10, 2017
WP17-5 November 22 - January 5, 2018

WP18-1 January 17 - March 2, 2018
WP18-2 March 28 - May 11, 2018
WP18-3A May 16 - June 29, 2018
WP18-3B July 11 - August 24, 2018
WP18-4 September 26 - November 9, 2018
WP18-5 November 21 - January 4, 2019

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

Preparation Note

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

Sample Preparation
To prepare solution, partially fill a 1 L volumetric flask with reagent-grade water (near 20 oC).
Allow ampule to equilibrate to room temperature and shake well prior opening. Due to lower solubility at refrigeration temperatures the sample may show precipitate. The precipitate will go back into solution once the sample warms and is shaken.
Open ampule PE1076-20ML (be careful to avoid cuts on glass) and transfer 10.0mL of concentrate to the volumetric flask.
Fill the flask to volume with reagent water.
Mix well.
The sample is now ready for immediate analysis.

Safety: