Spectrophotometric Standards Specialists

Wavelength Accuracy Standards

The accuracy of your instrument’s wavelength scale is crucial when obtaining absorbance readings on your sample. A slight change of less than 1nm can cause an instrument’s readings to shift leading to incorrect data. This puts the laboratory at risk of passing a product that should have failed quality control.

GFS Chemicals offers 3 different wavelength reference filters that are used to validate the wavelength scale. These materials will add confidence to your quality control process.

Listed below are the wavelength reference filters available with associated peaks. These materials are available in sealed quartz cuvettes certified for 4 years or in HDPE bottles with a 1 year shelf life.

Recertification is available for the sealed quartz cuvettes.


Holmium Oxide Wavelength Calibration Standard
Item #8340
Peaks at 241, 250, 278, 287, 334, 345, 361, 386, 416, 451, 468, 485, 537, 641 nm



Didymium Oxide Wavelength Calibration Standard
Item #8378
Peaks at 298, 329, 355, 445, 469, 482, 512, 522, 576, 732, 740, 795, 802, 866 nm



Samarium Oxide Wavelength Calibration Standard
Item #8379
Peaks at 236, 267, 280, 290, 305, 318, 332, 345, 401, 416, 442, 464, 479 nm

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 >>

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GFS Chemicals, Inc.
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