Spectrophotometric Standards Specialists

Custom Standards

You may have a unique application that requires verification of certain absorbance values or wavelengths that aren’t listed for our stock products. Our experienced staff has the ability to work with you to develop a reference standard that will validate your instrument for your application.

Please call technical support for assistance.

In order to facilitate custom standard development there are several key pieces of data that are required.
With this information, technical support will be able to quickly assess your needs.

  • Wavelength(s) of interest
  • Pathlength
  • Instrumentation make and model
  • Desired or sample absorbance range

Our problem-solving lab team is available Monday through Friday from 8:00 am to 4:30 pm EST.


For technical assistance, pricing, and availability contact:
Amanda Ross

Toll Free 800-838-5567 extension 231
614-824-3299 extension 231 (international)
740-881-5989 FAX


 ISO 9001 Certified 

ISO/IEC 17025 Accreditated

APHA/Platinum-Cobalt Color Standards Added to the In-Spec® Product Line 

Download the new In-Spec Catalog. More>>

EPA rule for SUVA for TOC analysis More >>

Order In-Spec® products online. We now offer several ways to order In-Spec® products for your convenience. More >>

FREE SAMPLE! See for yourself how much better In-Spec® is. More >>

In-Spec® is owned and operated by:
GFS Chemicals, Inc.
Visit the GFS Web site for more information.


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