We offer both organic and inorganic PTs for environmental and pharmaceutical testing.

Please view the range at www.sigmaaldrich.com/pt

The study schedule is available to view here: http://www.sigmaaldrich.com/analytical-chromatography/proficiency-testing.html

Scheduled studies run on a pre-defined schedule meaning that you will receive the samples when the study begins.  Your lab then has the full duration of the study (45 days) to analyze and submit the results.  Once the study closes, it ta...

Find the samples needed and request they are to be sent as a quick turn. These samples will be dispatched as soon as possible. You have 45 days from time of shipment to complete the analysis. If you complete the analysis quicker than 45 d...

WP means Water Pollution this will indicate a medium to high level water matrix sample. WS means Water Supply this will indicate a low level water matrix sample. LPTP means Laboratory Proficiency Testing Program and these are our soil and so...

A lab code is a unique code that allows us to identify your lab, ensure you get the correct samples and that the results are sent to the correct person(s). You can register your laboratory through the PT Portal. Your registration will be app...

Once you have registered your laboratory through the PT Portal, you can order your PT sample using your normal ordering process. Once your order has been placed, it will be approved by our PT Service team using the ‘ship to’ number in the order...

Country Code / CountrySales Rep First NameSales Rep Last NameSales Rep Email AE;United Arab EmiratesLennetMaduraylennet.maduray@merckgroup.com AN;Netherlands AntillesCustomerServiceSalessupportbenelux@merckgroup.com AT;AustriaCustomerServ...

All passwords have been transferred over from the old site.  If you do not remember your password, click reset password, or email ptservice@milliporesigma.com if you need additional support.

Yes there is, you can watch it below:

You will need to log into the PT Portal and select your study.  At the top of the data entry page, you will see the reporting steps.  Step 1 is “Reporting Packet”.  Select this and download or print the reporting packet. 

Log on to the PT Portal to enter your results.  If you need some further guidance, please refer to the training video on the FAQs page.

Yes, you can set up many different people with separate logins and even different levels of access as required.  Once you have access to the PT Portal, go to “My Account” to set up additional lab personnel. You can also type in the analyst...

Yes, we also provide a template for download, entering results and then uploading back to the PT Portal. You can download the template on the data entry page on the portal.

Please allow 48-72 hours for your report to be released.  Once available, they will be sent via email and will also be available to download once you are logged into your PT Dashboard under your "Reports" tab. If your report is urgent, ple...

You can email our PT Service team at ptservice@milliporesigma.com for general questions about reporting packets, reporting questions etc. as well as preparation instructions or specific sample technical questions.

COAs are available to download online at sigmaaldrich.com. Once you are on the website, click Support and then Certificates. Next, enter the part number and the lot number and click 'Lookup'. From there, you will be able to download the C...

Our certificates can be found here under the Laramie location: https://www.sigmaaldrich.com/customer-service/quality-systems/iso-certification.html