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30 mL Plasma Shots®
ICP & ICP-MS Grade

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Analytical Standards for Medicinal and Recreational Cannabis Testing

SPEX CertiPrep offers Certified Reference Materials (CRMs) for all of the common contaminants found in medicinal and recreational Cannabis

SPEX CertiPrep meets all your QuEChERS needs with general purpose kits suitable for removal of polar organic acids, some low to moderate levels of sugars, and lipids.


60th Anniversary Inorganic and Organic Catalog

Pesticides, PCBs & Herbicides

SPEX CertiPrep is the leader in offering standards designed to work within the EPA, AOAC and FDA Analytical testing methods using leading analytical techniques.

60 Years Experience Making Custom Standards to Your Exact Specifications.

Single and Dual Speciation Standards by ICP/ICP-MS and

SPEX CertiPrep is a leading manufacturer of certified reference materials (CRMs) and calibration standards for analytical spectroscopy and chromatography. We offer a full range of inorganic and organic CRMs. We are certified by UL-DQS for ISO 9001:2008 and are proud to be accredited by A2LA under ISO 17025:2005 and ISO Guide 34-2009. The scope of our accreditation is the most comprehensive in the industry and encompasses all our manufactured products.

Upcoming Events

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Pittcon 2015
Mar 08, 2015 – Mar 12, 2015
New Orleans
3rd Annual Chromatography Community Mixer
Mar 10, 2015
Generations Hall
Kansas Laboratory Education Association
Apr 07, 2015
Topeka, KS
Food Safety Summit
Apr 28, 2015 – Apr 30, 2015
Baltimore, MD
Florida Society of Environmental Analysis
May 20, 2015 – May 22, 2015
Clearwater Beach, FL
North America Chemical Residue Workshop (NACRW)
Jul 19, 2015 – Jul 22, 2015
St. Pete Beach, FL

Featured Videos

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CRM: Beyond the Basics

From accreditation to uncertainty--join SPEX CertiPrep as we explore the world of Certified Reference Materials. Starting with the basics, we will cover topics including the challenges of keeping up with regulations and accreditations, uncertainty types, and how to obtain accurate results with confidence!

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Wine Making: The Art & Chemistry of Wine

The production of wine has been an art form and a business for thousands of years. Join SPEX CertiPrep as we discuss the vintner's art, from wine production to the chemistry of wine. Our presentation will include a look at the different chemical aspects of wine from flavor profile agents to contamination and spoilage agents. We invite you to take part in our interesting and informative look at the art and science of wine!

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Restricted Elements in Imported Children's Toys

The recording of our webinar from April 10th entitled, "Identification, Preparation and Analysis of Imported Plastic Children's Toys for Restricted Elements."

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Latest News

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Download Webinar, Slides and Application Note-Pesticides in Beer and Wine

Posted 10/9/2014 |

 Download the webinar, slides and application note from, "Analysis of Beer, Wine and Components for Pesticides Using High Throughput Techniques and QuEChERS." 

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Single and Dual (New!) Speciation Standards by ICP-MS and LC-ICP-MS

Posted 10/5/2014 |

SPEX CertiPrep offers Inorganic single-element speciation standards including As3+, As5+, Cr3+, Cr6+, Se4+ and Se6+ by ICP and ICP-MS. We are now proud to offer Dual Speciation Standards for LC-ICP-MS! Arsenic (+3,+5) and Selenium (+4,+6) species are currently available.

-Percentages of the species are determined by LC and reported on the certificate.

-An LC Chromatogram is included on the certificate.

-Standards are each at 20 ug/mL and are optimized to work well for both ICP and ICP-MS (with a one-step dilution.)

-Trace impurities in the final solution are analyzed by ICP-MS and reported on the certificate.

Click here for more information.

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USP <467> Residual Solvents

Posted 10/1/2014 |

The USP general chapter Residual Solvents is a method widely used for identifying and quantifying residual solvents when there is no information available on what solvents are likely to be present.  USP is divided into two separate sections based upon sample solubility: water soluble and water insoluble articles.

As required by the analytical procedure given in USP for identifying and quantifying residual solvents in drug substances, drug products and excipients, SPEX CertiPrep now offers 35 analytes in Dimethyl Sulfoxide for Class 1, Class 2 and Class 3 solvents.  Our products are manufactured and double checked by our QC department to validate the certificate of analysis which accompanies each product.

Residual solvents in pharmaceuticals are trace level impurities of volatile organic compounds in final products or excipients. In general, residual solvents originate from manufacturing processes related to the preparation of drug products. They can also form during product packaging and storage.

For more information on these products, click here.

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Save 15% when you enter promo code NEWYEAR-15
on your next online order of $100 or more

  • Promo code valid on Organic and Inorganic products.
  • Minimum order amount is $100
  • Must enter promo code NEWYEAR-15 when ordering
  • Valid on direct, US orders only.
  • Not valid on Flux, Oil Standards and ERA QC Samples

Not valid with any other promotions. One per customer. Offer expires 03/31/2015.