You searched for: Standards

Supplier: Cayman Chemical Company

A Certified Reference Material

Supplier: Restek

2000ug/mL. Solvent: Purge and Trap Grade Methanol. Packaged 1mL/ampule.

Supplier: Restek

Contains: (C5) n-Pentane (109-66-0); (C6) n-Hexane (110-54-3); (C8) n-Octane (111-65-9); (C10) n-Decane (124-18-5); (C12) n-Dodecane (112-40-3); 1-Methylnaphthalene (90-12-0); Naphthalene (91-20-3); Toluene (108-88-3); 1,2,3-Trimethylbenzene (526-73-8).

Supplier: Cayman Chemical Company

A Certified Reference Material

Supplier: Cayman Chemical Company

A Certified Reference Material

Supplier: Restek

The Class 1 mixtures below reflect the requirements of USP23/NF18 effective January 1, 1995 to December 31, 1999

Supplier: SPEX CERTIPREP LLC

Meet or exceed performance criteria with QC samples.

Supplier: LaMotte

Accurate pH Testing

Supplier: Cayman Chemical Company

A Certified Reference Material

Supplier: Restek

200ug/mL in acetone, 5 mL/ampule.

Supplier: Restek

2000ug/mL. Solvent: Purge and Trap Grade Methanol. Packaged 1mL/ampule.

Supplier: Restek

Contains: Acetophenone, azobenzene, benzyl alcohol, bis(2-ethylhexyl)phthalate, benzyl butyl phthalate, dibenzofuran, diethylphthalate, dimethylphthalate, di-n-butyl phthalate, di-n-octyl phthalate, 2,4-dinitrotoluene, 2,6-dinitrotoluene, ethyl methanesulfonate, isophorone, isosafrole, methyl methanesulfonate, 1,4-naphthoquinone, nitrobenzene, 4-nitroquinoline-n-oxide, phenacetin, safrole, 1,3,5-trinitrobenzene.

Supplier: Restek

Contains four components, those are benzidine, 4,4'-DDT, decafluorotriphenylphosphine and pentachlorophenol.

Supplier: Cayman Chemical Company

A Certified Reference Material

Supplier: Cayman Chemical Company

A Certified Reference Material

Supplier: Cayman Chemical Company

A Certified Reference Material

Supplier: Restek

Contains two components, those are decachlorobiphenyl and 2,4,5,6-tetrachloro-m-xylene.

Supplier: SPEX CERTIPREP LLC

Semivolatiles US EPA method 625 is an analytical method for the monitoring of acid and base neutral extractable fractions in municipal and industrial wastewater by GC/MS. US EPA method 8270 is a general analytical method for the monitoring of semivolatiles in environmental and waste samples by GC/MS.

Supplier: LaMotte

Always keep your meter in range.

Supplier: Restek

This mix contains two components.

Supplier: Restek

Laboratories testing food quality and safety are encouraged to routinely perform proficiency tests. Proficiency testing is an external check of quality. It provides an independent and unbiased assessment of the performance of all aspects of the laboratory, both human and hardware.

Supplier: SPEX CERTIPREP LLC

Pesticides, PCBs and Herbicides

The EPA is tasked with the monitoring of environmental systems as they pertain to contamination and human health. The methods issued by the EPA are created to respond to specific toxins or persistent organic pollutants (POPs) found in environmental samples such as soil, source water, drinking water, and waste. In particular, pollutants such as polychlorinated biphenyls (PCBs), which were in widespread industrial use up until their restriction, are of concern due to their stable and persistent nature in the environment. Another group of chemicals of high concern is the hundreds of commercial pesticides and herbicides in use in the world today. Pesticides, from algaecides to virucides, are used in large quantities in industrial and private agriculture. The concern over human pesticide exposure over the past few decades has led to extensive monitoring of these pesticides. It has been reported that over 98% of insecticides and 95% of herbicides affect areas other than their intended target product. It is essential that monitoring agencies have accurate standard mixes to measure the pesticide levels in the environment.

Many new pesticides are now being tested using highly sensitive LC/MS techniques, in addition to traditional GC techniques, to determine minute amounts of residue in environmental samples and food products.

At SPEX CertiPrep, we facilitate ease of monitoring and testing of pesticides by creating pesticide test mixes to suit your monitoring needs. SPEX CertiPrep is the leader in offering pesticide standards designed to work within EPA, AOAC and FDA analytical testing methods using all of the leading analytical techniques: LC, LC/MS, GC, and GC/MS. Many pesticide standard mixes are readily available in our catalog along with a large list of single pesticide standards. In addition, custom pesticide mixes can be made to your specifications to create a mix that meets your needs.

US EPA Method 8082 is an analytical method for the monitoring of PCBs in environmental samples by GC/ECD or GC/ELCD

Supplier: SPEX CERTIPREP LLC

Meet or exceed performance criteria with QC samples.

Supplier: Restek

2-Bromobutanoic acid, 2000 µg/ml in methyl tert-butyl ether

Supplier: SPEX CERTIPREP LLC

CLP Standards for ICP & ICP-MS
Our Contract Laboratory Program (CLP) standards allow you to Calibrate with Confidence®. The standards are to be used in conjunction with the Statement of Work for Inorganic Analysis; Multi-Media/Multi-Concentration Document Number ILM 05.3/ISM 01.2.

The final ICP check, performed in our own laboratories, is your stamp of assurance. We calibrate our instruments with traceable reference materials and show you the actual found value of the solution you receive, not just an ideal, calculated number as so many other standards manufacturers do. The combination of elements, concentrations and matrices listed have been diagnosed by SPEX CertiPrep for convenience of use and stability.

US EPA SOW ILM 05.3/ISM 01.2 gives specific procedures for the methods of analysis, target elements, and concentrationlevels. Standards are specified not only by the elements present and their relative concentrations, but also the order and frequency of running standards, blanks and samples. Details of these specifications may be found in the US EPA SOW ILM 05.3/ISM 01.2 in the following sections:

• Exhibit C, Inorganic Target Analyte List (TAL)
• Exhibit D, Analytical Methods
• Exhibit E, QA/QC Requirements

CLP ISM 01.2 and ILM 05.2 & 05.3 Standards for ICP
For verification of inter-element and background correction factors at the beginning and the end of each analysis run. In addition, a verification must be done after every 20th sample. Two solutions are required for the most common interference check: Solution A, the interferents alone (INT-A1) and Solution AB, a combination of interferents (INT-A1) and analytes (INT-B3). Solution A is prepared by diluting INT-A1 20-fold. Solution AB is prepared by diluting INT-A1 20-fold and INT-B3 100-fold; for example, 5 ml of INT-A1 and 1 ml of INT-B3 into a 100 ml volumetric flask, brought to volume with a matrix blank. Once prepared, the solutions should be analyzed consecutively, starting with Solution A.

Supplier: Restek

5000ug/mL. Solvent: Isooctane. Packaged 1mL/ampule.

Supplier: Cayman Chemical Company

A Certified Reference Material

Supplier: Cayman Chemical Company

A Certified Reference Material

Supplier: Cayman Chemical Company

A Certified Reference Material

Supplier: Cayman Chemical Company

A Certified Reference Material