漫反射标准板:白板、灰阶

备注:Most of our standards can be calibrated traceable to NRC/NIST. Depending on your application you will want to select either 8°:d or 8°:T (hemispherical specular component excluded or included), and 45°:0° or 0°:45° (bidirectional) geometries. Some customers may require multiple geometries. Calibrations are indicated by the "c8H" or "c450" suffixes on most part numbers. Colorimetric coordinates (e.g.: xyY, XYZ, CIELAB) can be provided for any geometry for an additional fee. 

Fluorilon-99W

fluorilonchart
Hemispherical reflectance

Fluorilon-99W is a sintered PTFE material with the highest diffuse reflectance of any known material. Produced by an entirely new process. Fluorilon-99W™ offers the following properties:

  • Total hemispherical reflectance of 99% in the 400-800 nm region
  • Reflectance of >97% over most of UV-Vis-NIR region (300-2200 nm)
  • Reflectance of >92% from 250-2500 nm
  • Durable and cleanable

Standards are available as 1.25" (32 mm) or 2" (50.8 mm) diameter disks, with a Delrin™ (trademarked Dupont throughout) holder and protective cover. Larger targets (up to 12"/300 mm square in single piece, up to 48" square/ 1200 mm as arrays) are also available.

 
fluorilon
FT2186: Fluorilon FW-99-02
Bidirectional Reflectance Distribution Function
(BRDF) VS. Detector Angle (th_r) 
Wavelength=0.799 µm, incident angle 10°

Excel file with the above data
Part numbers for Fluorilon reflectance standards

Part #

Description

FW-99-01C
FW-99-01U
1.25" White Fluorilon (round)
FW-99-02C
FW-99-02U
2" White Fluorilon (round)
FWT-99-02C
FWT-99-02U
2" x 2" White Fluorilon in Delrin holder
FWT-99-04C
FWT-99-04U
4" x 4" White Fluorilon in Delrin holder with ¼-20 tapped hole
FWT-99-05C
FWT-99-05U
5" x 5" White Fluorilon in Delrin holder with ¼-20 tapped hole
FWT-99-06C
FWT-99-06C
6"x6" White Fluorilon in Delrin holder
with ¼-20 tapped hole
FWT-99-10C
FWT-99-10U
10"x 10" White Fluorilon in Aluminum holder with ¼-20 tapped hole
FWT-99-12C
FWT-99-12U
12" x 12"White Fluorilon in Aluminum holder with ¼-20 tapped hole

† C indicates calibrated standard, traceable to NIST/NRC. U indicates uncalibrated, nominal data are available.

Fluorilon-99W is available in bulk in sizes up to 12" square and up to 2" thick.
Price is dependent on size and quantity. (Email for a quote)

AluWhite98 White Reflectance Standards

AluWhite Hemispherical measurement
AluWhite Bidirectional measurement
Hemispherical (top) and bidirectional reflectance factor of AluWhite98

Avian Technologies LLC introduces AluWhite98 high reflectance standards. The aluminum oxide based material exhibits reflectance in excess of 98% over the visible-NIR range. AluWhite98 is available in both matte and gloss surface finishes. The matte material Aluwhite98(m) is quite diffuse and has a slightly higher overall reflectance than the glossy version, AluWhite98(g). AluWhite98(g) is a better choice if the standard needs to be easily cleanable.

Both of these materials should be considered as a replacement for Russian Opal glass which is no longer available.

AluWhite98 standards are currently available as 2” (50.8 mm) squares or 1.375” (37 mm) disks, either mounted or unmounted. All standards are available with either the matte or glossy surface finish. Custom sizes are available on request.

All standards are available with NIST/NRC traceable calibrations for 8°/hemispherical reflectance factor from 250 nm to 2500 nm.

Gold Avian Standards and Targets

aviangold 
Hemispherical reflectance

Diffuse gold is an excellent standard for wavelengths from 850 nm to >15µm. Avian Technologies AvianGold offers high diffuse reflectance of > 90% from 1000 nm to well into the mid-infrared. 
Standards and targets are available both calibrated and uncalibrated, ranging from 2” diameter or square to 10” square. Custom sizes are available upon request. All square targets are mounted in an anodized aluminum holder with a ¼-20 tapped hole.

Part #

Description

RTAu-02C
RTAu-02U
2” Square Diffuse Gold target
RSAu-02C
RSAu-02U
2” Diameter Diffuse Gold Standard in Delrin holder
RTAu-06C
RTAu-06U
6” Square Diffuse Gold target
RTAu-10C
RTAu-10U
10” Square Diffuse Gold target
‡C indicates calibrated 800-2500 nm. U indicates uncalibrated. (Nominal data are available).
Calibration from 2-20 µm is available for an additional charge
 

Gray Scale Standards

greyscalestds

Hemispherical reflectance

Gray scale standards are essential for establishing the photometric linearity of a reflectance spectrometer. These are used in the same way neutral density filters are used in transmittance instruments. Avian Technologies FluorilonTM Gray Scale standards allow the user to calibrate an instrument over a 2 decade range of reflectance, which is well over the typical range seen by a reflectance instrument. The materials are highly diffuse and therefore have little angular dependence and almost no gloss, which means that specular included and excluded geometries should show little difference in reflectance values.

The standards set consists of four standards of nominal reflectance (at 600 nm) of 2%, 10%, 50%, and 99% reflectance. The standards are mounted in a Delrin holder with cap. The set is presented in a waterproof plastic box.


Part #

Description

FSS-04-01C 1.25" Fluorilon Gray Scale Reflectance Standard Set 
Calibrated, Traceable to NIST/NRC, Boxed
FSS-04-02C 2.0" Fluorilon Gray Scale Reflectance Standard Set 
Calibrated, Traceable to NIST/NRC, Boxed
FSS-08-01C 1.25" Fluorilon Expanded Gray Scale Set of 8 stds.
Nominal Reflectances: 2%, 5%, 10%, 20%, 40%, 60%, 80%, 99%) 
All have tolerances of ±2% at 600 nm except the 2%, and 99%, which have ±1%.
FSS-08-02C 2.0" Fluorilon Expanded Gray Scale Set of 8 stds.
Nominal Reflectances: 2%, 5%, 10%, 20%, 40%, 60%, 80%, 99%) 
All have tolerances of ±2% at 600 nm except the 2%, and 99%, which have ±1%.

Individual Standards
FGS-XX-01C 1.25" Fluorilon Gray Standard, Calibrated traceable
to NIST/NRC, (xx designates nominal reflectance at 600nm)
FGS-XX-02C 2.0" Fluorilon Gray Standard, Calibrated traceable
to NIST/NRC, (xx designates nominal reflectance at 600nm)

Gray scale standards are available uncalibrated or calibrated 8:d and/or 45:0.
 

‘Encapsulated’ Gray Scale and Wavelength Standards to meet USP 1119

Avian Technologies is introducing new ‘encapsulated’ gray scale and wavelength standards to meet USP 1119. The standards are identical to the Fluorilon FSS-08-02c kit except the Fluorilon is encased in a Delrin™ holder with a 2” diameter BK-7 window. The overall size of the standard is 2.400” diameter (61 mm) and 0.620” thick (15.88 mm). The size of both the gray scale and wavelength standards is identical to enable fixturing for most instruments designed to measure pharmaceutical on-line processes.

The wavelength standard has the same components as the National Institute of Technology’s SRM-1920a, with a small amount of an inert, spectrally non-absorbing binder. Unlike sintered equivalents of SRM-1920a, this standard exhibits no peak shifting and is both durable and stable.

Both gray scale and wavelength standard have a small, re-sealable port in the top to allow for conditioning of the standard in a controlled humidity environment.

Part #

Description

EN-FSS-04-02c Set of four gray scale standards, cells with BK-7 window, nominal 8°/hemispherical reflectance of 2%, 10%, 40%, and 99%, calibrated from 400-2400 nm, traceable to NIST/NRC.
EN-FSS-08-02c Set of eight gray scale standards, cells with BK-7 window, nominal 8°/hemispherical reflectance of 2%, 5%, 10%, 20%, 40%, 60%, 80%, and 99%, calibrated from 400-2400 nm, traceable to NIST/NRC.

EN-FSS-08-02c kit comes in a waterproof plastic box to hold eight standards. EWC-P1920a-02c comes in an individual wooden box.
 

BCRA Gray Scale Tile Set

ceramgreyscale

ceramgreyHemispherical reflectance
In some cases, especially where durability and frequent cleaning are necessary or organic fumes or grease are present, ceramic tile standards provide a better choice than Fluorilon standards. In addition, these standards are more suited to small spot measurements or at 0:45 geometry, where the specular component is automatically excluded. 

The standard set consists of ten standards (white, 80%, 70%, 60%, 50%, 33%, 8%, 4.5% black, and a black glass) in Delrin holders with a 1" mounting counter bore in the back of the standard. The standards are presented in a water proof box. Note all reflectance percentages are nominal.

Representative measured data, along with D65/2° CIELAB and x, y, Y values can be downloaded from this spreadsheet(these are bidirectional radiance factor).

BCRA gray scale tiles are available in several options:
  • Matte or glossy finish
  • 2" square or 4" square
  • calibrated or uncalibrated (8:d, 8:T, 45:0 or any combination)

Custom sets are available. Customers often want individual white or black tiles, available as part#BCRA-WT-02 or BCRA-BK-02C.





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