815 Results for: "Analytical Standards"

Supplier: SPEX CERTIPREP LLC

Consumer Safety Standards
Analytical Standards for Wine

Wine is a complex combination of water, alcohol and other substances such as organic acids, phenols, sugars, carbon dioxide, and sulfur dioxide. The chemical interactions of these compounds, combined with the aging process, determine the quality of the color, taste and aroma of the wine. However, during this process, the chemical interactions can also play key roles in spoiling the wine. For instance, cork taint transpires when naturally occurring airborne fungi are in the presence of chlorophenol compounds to form 2,4,6-trichloranisole (TCA) in the wine. When this occurs, the wine’s aroma is reduced significantly and is replaced by an undesirable smell and taste.

To help regulate the spoilage of wine, the wine industry tests for several compounds that are known to cause this. For this industry, SPEX CertiPrep offers Certified Reference Materials (CRMs) for wine that are designed for GC, GC/MS, HPLC and LC/MS analysis. These standards are manufactured from the highest purity starting materials and the highest grade of solvents available in order to guarantee superior quality. Each standard is supplied with a detailed comprehensive Certificate of Analysis.

Supplier: Mettler Toledo

METTLER TOLEDO Standard MA Analytical Balances are highly accurate, efficient, simple to operate and designed with robust construction for proven long lasting performance.

Supplier: Mettler Toledo

METTLER TOLEDO Standard LA Analytical Balances have a precise weigh cell and external adjustment. The bright, backlit LCD display is equipped with 3 built-in applications for piece counting and dynamic weighing.

Supplier: Sartorius

These Cubis® II laboratory balances are ideal for high-performance portfolio of both lab weighing hardware and software.

Supplier: Ricca Chemical

Magnesium Standard, Magnesium standard solution, 1,000 mg/l Mg in dil. nitric acid analytical reagent, 1000 µg/ml, Application: ICP standards

Supplier: ELGA LabWater

Delivering the ultimate in water purity for absolute confidence in your results

Supplier: DWK Life Sciences (KIMBLE)

with [standard taper] 19/22 and [standard taper] 24/40 Clear-Seal joints. For the concentration of trace amounts of analyte in an organic solvent prior to analysis.

Supplier: Sartorius

These Cubis® II laboratory balances are ideal for high-performance portfolio of both labs weighing hardware and software.

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: Cytiva

A standard grade filter used for many routine analytical applications in different industries (e.g., particle separation from food extracts or filtration of solids from digested environmental samples for iCP/AAs analysis).

Supplier: Cytiva

Whatman Grade 1 Qualitative Filter Papers are the most widely used filter paper for routine laboratory applications, qualitative analytical separations, and clarifying liquids. They are the standard grade cellulose filter papers for medium flow rates.

Supplier: TCI America

Product Categories: Analytical Science, Standard Materials for GC

Supplier: DWK Life Sciences (KIMBLE)

20-400 top, 20-400 bottom. For the concentration of trace amounts of analytes in an organic solvent prior to analysis. Wheaton Connections eliminate the hooks, springs and clamps common to standard ground joint designs.

Supplier: TCI America

Product Categories: Analytical Science, Standard Materials for GC

Supplier: AVANTOR PERFORMANCE MATERIAL LLC

AR - The standard Macron Fine Chemicals™ grade of analytical reagents; suitable for laboratory and general use.

Supplier: Ace Glass

Made of polypropylene, these analytical funnels take standard size filter papers

Supplier: Macherey-Nagel

A range of analytical reagents for photometric water analysis in the NANOCOLOR® standard test version.

Supplier: SPEX CERTIPREP LLC

Cannabis standard, analytical standard for medicinal and recreational cannabis testing.
Designed for Methods: State specific pesticide regulations:

Supplier: SPEX CERTIPREP LLC

Cannabis standard, analytical standard for medicinal and recreational cannabis testing.
Designed for Methods: State specific pesticide regulations:

Supplier: SPEX CERTIPREP LLC

Cannabis standard, analytical standard for medicinal and recreational cannabis testing.
Designed for Methods: State specific pesticide regulations:

Supplier: SPEX CERTIPREP LLC

Cannabis standard, analytical standard for medicinal and recreational cannabis testing.
Designed for Methods: State specific pesticide regulations:

Supplier: SPEX CERTIPREP LLC

Cannabis standard, analytical standard for medicinal and recreational cannabis testing.
Designed for Methods: State specific pesticide regulations:

Supplier: SPEX CERTIPREP LLC

Cannabis standard, analytical standard for medicinal and recreational cannabis testing.
Designed for Methods: State specific pesticide regulations:

Supplier: SPEX CERTIPREP LLC

Cannabis standard, analytical standard for medicinal and recreational cannabis testing.
Designed for Methods: State specific pesticide regulations:

Supplier: SPEX CERTIPREP LLC

Cannabis standard, analytical standard for medicinal and recreational cannabis testing.
Designed for Methods: State specific pesticide regulations:

Supplier: SPEX CERTIPREP LLC

Cannabis standard, analytical standard for medicinal and recreational cannabis testing.
Designed for Methods: State specific pesticide regulations:

Supplier: SPEX CERTIPREP LLC

Cannabis standard, analytical standard for medicinal and recreational cannabis testing.
Designed for Methods: State specific pesticide regulations:

Supplier: SPEX CERTIPREP LLC

Cannabis standard, analytical standard for medicinal and recreational cannabis testing.
Designed for Methods: State specific pesticide regulations:

Supplier: SPEX CERTIPREP LLC

Cannabis standard, analytical standard for medicinal and recreational cannabis testing.
Designed for Methods: State specific pesticide regulations:

Supplier: SPEX CERTIPREP LLC

Cannabis standard, analytical standard for medicinal and recreational cannabis testing.
Designed for Methods: State specific pesticide regulations: