Gasoline in Water - AK - PT

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 ampule contains a concentrate of a blended gasoline from three different sources in methanol.
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 volumetric flask to volume with carbon-filtered reagent-grade water at room temperature.
Open ampule PE1817-2ML (be careful to avoid cuts on glass) and immediately withdraw 20 μL. NOTE: This is a 1 to 5000 dilution.
Quickly inject the 20 μL aliquot into the reagent water in the expanded area of the volumetric flask.
Mix the sample by inverting the flask three times only (excessive shaking results in loss of volatiles) and analyze immediately

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 (2018-2019)

Soils
LPTP18-S1January 31 - March 16, 2018
LPTP18-S2April 11 - May 25, 2018
LPTP18-S3July 25 - September 7, 2018
LPTP18-S4October 10 - November 23, 2018

LPTP19-S1January 30 - March 15, 2019
LPTP19-S2April 10 - May 24, 2019
LPTP19-S3 July 24 - September 6, 2019
LPTP19-S4 October 9 - November 22, 2019

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