Used IR Spectrometers and others type
118 resultsSpectroflourometer with Temperature Control, incoming, a nice compact unit Very sensitive, with temperature co Location : AMERICA North (USA-Canada-Mexico)
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More detailswith SpectrAA v5.2 PC workstation OPTIONAL: Varian VGA77 vapor generator (VGA-77) & Agilent mercury lamp (p/n Location : AMERICA North (USA-Canada-Mexico)
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More detailscomplete with chiller, autosampler and PC workstation Location : AMERICA North (USA-Canada-Mexico)
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More detailsOPTIONAL: Agilent GTA 120 Graphite Tube Atomizer (p/n AA1105M547) & Agilent Technologies PSD 120 Programmable Location : AMERICA North (USA-Canada-Mexico)
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More detailsRefurbished Shimadzu AA-7000 double beam Atomic Absorption Spectrophotometer Complete with Shimadzu WizAArd 5 Location : AMERICA North (USA-Canada-Mexico)
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More detailsLocation : EUROPE (Western and Northern)
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More detailsLINE IS DISMANTLED. Fully automated anodising line. Material dimensions of up to 1,5 x 1,4 x 0,5m to be anodi Location : EUROPE (Central and Eastern)
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More detailsDims 47cm D x 15 cm w x 44cm h Serial # 085/28670-5 Specifications Wavelength: D2 lamp: 190 to 365 nm Lamp: D2 Year(s) : 2005 Location : EUROPE (Western and Northern)
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More detailsRange: 340 to 950nm Spectrophotometer, Digital; Test Vol.: 0.75mL; Tungsten lamp Easy filter change; Solid-sta Location : EUROPE (Western and Northern)
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More detailsLocation : EUROPE (Western and Northern)
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More details<b> 1x Hach, DR - 3000, Spectrophotometer Description </b> Manufacturer: Hach Company Model: 19600 - 00 Condi Location : AMERICA North (USA-Canada-Mexico)
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More details<b> 1x Beckman Coulter, DU 640, Spectrophotometer Description </b> - Beckman Coultier DU 640 Spectrophotomete Location : AMERICA North (USA-Canada-Mexico)
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More detailsFEATURES Wave number range 4000 to 600 cm EZ-scan software for instrument control and data acquisition 2 cm-1 Location : AMERICA North (USA-Canada-Mexico)
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More detailsmass spectrometer complete with Turbo V-Source with ESI Probe, Varian Vacuum Pump with hose custom bench on wh Location : AMERICA North (USA-Canada-Mexico)
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More detailscomplete with THGA-700 transverse heated graphite atomizer Perkin Elmer furnace cooling system (p/n 198072) an Location : AMERICA North (USA-Canada-Mexico)
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More detailsLocation : AMERICA North (USA-Canada-Mexico)
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More detailsLight Source: Tungsten Halogen Spectral Bandwidth: 4nm Wavelength Range: 320-1100nm Specifications Stray light Location : EUROPE (Western and Northern)
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More detailsComplete unit with the following items: (MZ320216) Axion 2 TOF for Altus w/computer, bench (MZ300560) AxION DS Year(s) : 2016 Location : EUROPE (Western and Northern)
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More detailsYou can find used IR Spectrometers and others type on Wotol
The main manufacturers of IR Spectrometers and others type are Perkin Elmer, Thermo Nicolet, Jasco, Foss, Nicolet, Bruker, Shimadzu, Thermo Electron, Varian, Agilent, Thermo, Alere, Magna.
Find the right Spectrophotometer or Instrumental color measurement with our expert
This instrument has lens, light source, difraction gratting or prism and color analyser.
What is "Color" ? When we see the object and then we say the color is Blue , do you know why ?
It is because object reflected Blue color and adsorb other color. To see colors we need: Object, illuminant (light source), observer (Eyes or Lens) and then Brain or Analyser will calculate so we have "Color"
Our eyes always see what refelected by object. Similar case with Spectrophotometer it can measure reflectance and transmitance.
The next step would be the physical measurement of the
object, for reflected (or transmitted) light, by a color spectrophotometer. The basic information provide by the “spectro” is simply the wavelength reflectance values across the visible spectrum, known as spectral data, which can be displayed as a spectral curve.
Now 2 of the 3 elements of the observer situation are represented as numbers.
Spectral reflectance data
- Spectral measurement range:
380nm to 730nm
- Reflectance range
"Normal" samples: 0% to 100%
(100% = perfect white diffusor 0% = perfect black)
Effect samples: up to 300% (for small aspecular angles)
Fluorescent colors: up to 200%
Color identification
Spectral information under defined geometrical conditions is the fingerprint of a color
The spectral information can be transformed so that colors can be arranged in a 3 - dimensional color space
Every color has a unique "address" color space
The "address" is valid for a certain illuminant (D65 or A or TL84 or others) and for a certain observer (2° or 10°) and for a certain geometry (d/8°, 45°/0° or others) !
Changing illuminant and/or observer and/or geometry in most cases will result in a different "address" in color space for the same sample
Color order system, color space
CIE L*a*b* 1976
Based on the Munsell system
L* a* b* are the primary coordinates
L*: Lightness direction
a*: red - green direction
b*: yellow - blue direction
CIE Lab system is industry standard
CIE Lab system version 2
C*, h: Same facts, different description
polar coordinates instead of kartesian coordinates
Chroma (independent of hue)
C*= (a*2 + b*2) 1/2
Hue angle (independent of chroma)
h= arctan (b* / a*) counterclockwise, starting at positive a* axis with h = 0°
Color difference description
Most important for industrial use
Color difference is the distance in color space between two adresses", e.g. between the "adress" of a standard and the "adress" of a trial.
The color difference has 3 components:
Lightness difference dL*=L*trial - L*standard
red-green difference da*=a*trial - a*standard
yellow-blue difference db*=b*trial - b*standard
Total color difference dE* is calculated from the 3 components:
dE*= (dL*2 + da*2 + db*2) 1/2
Same facts, different description
dE*= (dL*2 + dC*2 + dH*2) 1/2
Chroma difference dC* = C*trial - C*standard
Hue difference dH*= (da*2 + db*2 - dC*2) 1/2
sign dH*: positive if
a*trial b*standard - a*standard b*trial R0 else negative.
Attention: dH* is a distance in color space and not the difference of the hue angles htrial - hstandard !!!
But the computer has no problem with the slightly complicated calculation
Common brand:
Datacolor, GretagMacbeth, Hunterlab, Kurabo, Macbeth, Minolta and Xrite