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SPE025AK Supelco

BTEX/MTBE in Soil - PT

Proficiency Testing Material



packaging   ampule of 1 × 25 g
mfr. no.   RTC, SPE-025AK
concentration   in methanol
Featured Industry   Environmental
storage temp.   2-8°C


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.

Preparation Note

The PT sample is a soil containing the BTEX components of gasoline and MTBE. The PT sample size provided is 25 g of soil. The soil has been preserved with 25 mL of methanol. The PT sample has been sized to 100 mesh. The evaluation of result will be based on windows determined by ADEC. The sample was fortified with BTEX components to be extracted and analyzed using method AK101. This sample can also be analyzed by other methods including but not limited to EPA 8021 and IOWA OA-1. This sample can also be analyzed for MTBE and trimethylbenzenes. If you wish to report these analytes and they are not listed on your report form, contact RTC for additional forms.

Sample Preparation
The 25 g soil sample is preserved in 25 mL methanol.
Report results on a wet weight basis. All analytes are reported in mg/Kg.

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 (2018-2019)

LPTP18-S1 January 31 - March 16, 2018
LPTP18-S2 April 11 - May 25, 2018
LPTP18-S3 July 25 - September 7, 2018
LPTP18-S4 October 10 - November 23, 2018

LPTP19-S1 January 30 - March 15, 2019
LPTP19-S2 April 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)



Product #

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Benzene 5-100 mg/kg    
Ethylbenzene 5-100 mg/kg    
Methyl tert-butyl ether (MTBE) 5-100 mg/kg    
Toluene 5-100 mg/kg    
m+p-Xylene 5-100 mg/kg    
o-Xylene 5-100 mg/kg    
Xylene, total 5-100 mg/kg    
Safety & Documentation

Safety Information

Signal word 
Hazard statements 
UN 1992 6.1(3) / PGII
WGK Germany 
Flash Point(F) 
51.8 °F
Flash Point(C) 
11 °C


Certificate of Analysis


Frequently Asked Questions

Which document(s) contains shelf-life or expiration date information for a given product?
If available for a given product, the recommended re-test date or the expiration date can be found on the Certificate of Analysis.
How do I get lot-specific information or a Certificate of Analysis?
The lot specific COA document can be found by entering the lot number above under the "Documents" section.
How do I find price and availability?
There are several ways to find pricing and availability for our products.Once you log onto our website, you will find the price and availability displayed on the product detail page.You can contact any of our Customer Sales and Service offices to receive a quote. USA customers: 1-800-325-3010 orview local office numbers.
What is the Department of Transportation shipping information for this product?
Transportation information can be found in Section 14 of the product's (M)SDS.To access the shipping information for this material, use the link on the product detail page for the product.
Are Certificates of Analysis created forRTC proficiency testing products?
Certificates of Analysis are not available for RTC proficiency testing products. Those are the samples with the SPE or PE prefix in the part number.
My question is not addressed here, how can I contact Technical Service for assistance?
Ask a Scientist here.
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