Sigma-Aldrich/BTEX in Water - AK - PT/PE1608-2ML/2ML

Properties:

Description:

Frequently Asked Questions

Frequently Asked Questions are available for this Product.

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 unti the testing period concludes. Values of analytes vary lot to lot.

Proficiency Testing Schedule (2017-2018)

Soils
LPTP17-S1 February 1 - March 17, 2017
LPTP17-S2 April 12 - May 26, 2017
LPTP17-S3 July 26 - September 8, 2017
LPTP17-S4 October 11 - November 24, 2017

LPTP18-S1 January 31 - March 16, 2018
LPTP18-S2 April 11 - May 25, 2018
LPTP18-S3 July 25 - September 7, 2018
LPTP18-S4 October 10 - November 23, 2018

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

Preparation Note

This PT sample is packaged as a 1.5 mL concentrate.
The solvent for This sample is methanol.
The PT sample is not preserved.

Sample preparation
Fill a 100 mL Class A Volumetric Flask with 90 mL of organic free reagent water.
Allow the ampule concentrate to equilibrate to room temperature.
Open the ampule and pipet exactly 20 μL of the concentrate into the flask.
Fill to volume.
Stopper the flask and mix by gentle inversion 3 times. Excessive mixing will result in loss of volatiles and should be avoided.
This represents the sample for analysis.

Safety:

Symbol 

  GHS02, GHS06, GHS08