Silica-WS

产品说明

一般描述

Silica - WS proficiency testing material is produced in accordance with ISO/IEC 17043:2010. Also referred to as Potable water or Water Supply sample, this product is produced according to TNI requirements. However, please note, this sample may include non-TNI analytes as well. The lower criteria from the TNI tables mimic the levels common to drinking water samples. The PT portfolio allows our test components to offer significant performance data to monitor and prove competency to customers, accreditation bodies or both.

Supelco^® is a global proficiency testing (PT) provider that manufactures best-in-class environmental and pharmaceutical PT products. Most water PT samples are available as concentrates or ready-to-use volumes giving the end-user flexibility in selecting samples that will fit their exact needs.
These samples are typically provided in duplicate for use in case of lab mishap, for QC purposes or to analyze multiple methods.

Type of PT Scheme: Water Analysis - Water Supply (WS)

Matrix: Water Supply/Drinking Water

Analyte/s: Values of analytes vary lot to lot.

All information regarding the use of Silica - Water Supply (WS) Proficiency Testing standard can be found in the reporting packet which will be available to download at PT Portal.

应用

Silica - WS as a proficiency testing material finds applications in water supply (WS) testing or silica testing in water supply/drinking water samples.

Have any questions? Explore our FAQs.
For more information on this product, please contact our PT Service Team.

特点和优势

We have a vast portfolio of environmental PT schemes with "fit-for-purpose" samples to help you meet the needs of the laboratory.

Our proficiency testing (PT) program is a benchmark to:

• provide staff with an insight into their laboratory′s performance, to verify the accuracy and reliability of their testing process
• provide a comparison of performance with that of other laboratories, nationally and internationally
• test and educate staff, provide a better understanding of the impact of incorrect results and identify areas where there may be problems
• provide an independent evaluation of laboratory performance
• demonstrate to clients, colleagues and accreditation bodies that there is a commitment to quality

制备说明

Description

• This PT sample is as a 20 mL concentrate.
• The solvent for this sample is water.
• The PT sample is not preserved.

Sample Preparation

• Partially fill a 1000 mL volumetric flask with reagent-grade water (near 20 ℃) and add 1 mL of trace-metal-grade nitric acid.
• Open bottle PE1350-20ML 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.
• Silica (SiO₂) should be reported in mg/L.

NOTES: Samples, standards and reagent water blanks should all have the same acid matrix. The solution resulting from the above dilution will contain 0.15% v/v nitric acid; additional or different acids may be used as appropriate for analytical procedures or to match standards.

储存及稳定性

Please refer to sample label for expiration date, specific storage temperature, and specific storage conditions.

其他说明

Are you new to Supelco^® Proficiency Testing? Be sure to register your account details in the PT Portal before placing your order.
This will provide access to data entry, reporting packets and final reports. Registrations will be approved shortly after your order is placed. For further questions, write to us at ptservice@milliporesigma.com.

When placing your order online, please indicate your study preference under the ′your reference′ column. Available studies can be viewed at the bottom of the page.
Click here to learn more about Quick-Turn Studies (on-demand proficiency tests that are offered depending on lot availability). The Quick-Turn results are released within 48-72 hours whereas scheduled study reports are released within 21 days.

Proficiency testing samples are presented as single blind. No values for the samples are released until the testing period concludes.

Proficiency Testing Schedule (2021-2022)

Drinking Water
WS21-2March 24 - May 7, 2021
WS21-4 September 22 - November 5, 2021

WS22-2March 23 - May 6, 2022
WS22-4 September 21 - November 4, 2022

法律信息

Supelco is a registered trademark of Merck KGaA, Darmstadt, Germany

基本信息

NACRES

NA.24

产品性质

质量水平	100
包装	ampule of 2 × 20 mL
浓度	in nitric acid
application(s)	environmental
格式	matrix material

安全信息

储存分类代码	12 - Non Combustible Liquids
WGK	nwg
闪点(F)	Not applicable
闪点(C)	Not applicable