Optical Standards

MRC-910-1920x Extended Range Near-Infrared Wavelength Standard

Extended range near-infrared wavelength standards are used to validate the wavelength scale of near-infrared instruments. The standards are made with four components, three rare earth oxides and talc, to cover the whole region from 1000 nm to 2500 nm. The standards are sealed and traceable to NIST SRM 1920a standards. Different sizes allow use with numerous spectroscopic instruments.

 

 

 

MRC-910-1920x Product Sheet

 

Near-Infrared and UV-Visible Diffuse Reflectance Standards

In order to measure reflectance with a UV-Visible or a Near-Infrared instrument, or hyperspectral camera, the instruments need to be calibrated with materials that have the highest possible reflectance. Diffuse gold in 1 inch and 1.75 inch diameters could be used in conjunction with the same size Middleton Research wavelength standards.

High reflectivity PTFE is an industry standard. Middleton Research produces PTFE reflective materials that are fully comparable with the best available reflectance standards in both the near-infrared and ultraviolet-visible regions, and they can be manufactured in different shapes and sizes.

NIR and UV-Vis Diffuse Reflectance Standards Product Sheet

 

MRC-910-3200 Absolute Specular Reflectance Standards

Infrared specular reflectance measurements are related to highly reflective reference materials, such as evaporated gold. Thin gold coatings, however, may change with use over time, and furthermore, the reflectance cannot be assumed to be close to the ideal 100 percent, even when the gold surface is freshly created. The Middleton Research MRC-910-3200 Specular Reflectance Standard has known and tabulated reflectance values, and thus can be used to normalize the reflectance measurements of unknown surfaces. The Infrared Specular Reflectance Standard is stable over time, thus it can assure the long-term stability and comparability of such measurements.

MRC-910-3200 Product Sheet

 

MRC-910-ATR Validation Standards

For measurements in regulated industries, Attenuated Total Reflectance (ATR) accessories need to be validated periodically. The Middleton Research MRC-910-ATR Validation Standards serve to test the functioning and reproducibility of ATR accessories and systems, without contaminating the ATR crystal surface.

 

 

 

MRC-910-ATR Product Sheet

 

MRC-910-1921GW LWIR Diffuse Reflectance Wavelength Standards

Diffuse reflectance optical arrangement is used often in the mid-infrared wavelength region to measure the reflectance spectra of powders, films and other samples. Middleton Research developed a NIST Traceable Diffuse Reflectance Wavelength Standard that has well identified sharp bands throughout the whole mid-infrared region. FTIR accessories, manufactured by FTIR spectrometer or infrared accessory manufacturers can be validated using this traceable standard.

 

MRC-910-1921GW Product Sheet

 

MRC-910-LIN Linearity Standard Sets

Traceable linearity standards are used to calibrate spectrophotometers in regulated industries. They can be used to make corrections to the photometric scale. The set of standards consists of 6 or 8 diffuse reflective disks with reflectance values ranging from approximately 99% to 2% and have calibrated spectra in the NIR wavelength region. The disks are sealed and contain a blend of polytetrafluoroethylene and charcoal powders. The certification package includes a table of values, certificate, and spectra. The standards are delivered in a protective wooden case.

MRC-910-LIN Product Sheet

 

Recertification of Standards

Many standards must be re-certified periodically to comply with regulatory requirements. Recertification is a cost-effective way of extending the life of a standard. Middleton Research performs this service expeditiously to minimize your down time. Should you already have a standard from Middleton Research or its predecessor company, Kemeny Associates, please contact us for recertification.

 

Standards Calibration and Recertification Services