>
产品中心 >
Biochemical_standard >
Sigma-Aldrich/Trace Metals (Dissolved) PT - 1/PE1038-20ML/20ML
Properties:
| Related Categories | Additional Standards, Analytical Standards, Analytical/Chromatography, Proficiency Testing, Water Pollution/Waste Water Inorganics, |
| packaging | ampule of 1 × 20 mL |
| mfr. no. | RTC, PEI-430-1 |
| concentration | in nitric acid |
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 a 20mL concentrate.
Definition of a dissolved metal: Those metals in an unacidified sample that pass through a 0.45-μm membrane filter.
The solvent for this sample is 1% nitric acid by volume in DI water. The sample is slightly acidified to maintain stability in the concentrate and will not interfere with the method. Please follow preparations directions for best performance.
The PT sample has not been preserved.
Sample Preparation
To prepare solution, partially fill a 1000-mL volumetric flask with reagent-grade water (near 20ºC).
Shake ampule well prior to opening.
Open ampule PEI-430-1 (be careful to avoid cuts on glass) and transfer 10.0 mL of concentrate to the volumetric flask.
Fill the flask to volume with reagent-grade water and mix well.
The sample is now ready for immediate analysis. Please not that the sample has not been acidified, you will need to acidify as required by your method after filtration.
A reagent-grade blank should be analyzed concurrently for background correction. The water blank should be made to match the acid matrix of the standards and samples
Safety:
GHS07, GHS08
