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Sigma-Aldrich/Total Organic Carbon (TOC) - WS/PE1308-20ML/20ML
Properties:
| Related Categories | Additional Standards, Analytical Standards, Analytical/Chromatography, Proficiency Testing, Water Supply/Drinking Water Organics, |
| mfr. no. | RTC, PEI-013 |
| concentration | in H2O |
Description:
Analysis Note
This PT sample is packaged as a 20mL concentrate. The solvent for this sample is water. The PT sample has been autoclaved for preservation.
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
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
Sample Preparation
Partially fill a 1000-mL volumetric flask with reagent-grade water (near 20ºC).
Open ampule PE1308-20ML (be careful to avoid cuts on glass) and transfer 10.0 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.
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.
If the TOC analysis is to be delayed for more than 48 hours (at 4ºC), preserve a portion of the sample (pH<2) with phosphoric acid to obtain a maximum holding time of 28 days.
