The use of two gratings, each blazed at different wavelengths, maximizes the performance of the instrument throughout the entire visible spectrum. The gratings are mounted on one assembly and are interchanged by rotation of an external control knob. To work in regions other than the visible, or if only one grating is needed, order the 82-415 model and choose one or two gratings to cover any desired region from 200 nm to 40 µm. There is a large selection of gratings to choose from.
Two bayonet-type slits are provided which can be easily removed and interchanged for other slits. This feature allows resolution or high throughput measurements, depending on the width of the slit used. An adjustable slit is also available.
The MonoSpec 25 features an Ebert optical design with the entrance and exit slits in a straight line configuration. This optical system provides high throughput with an aperture of f/3.5. An all-aluminum casting makes this a highly stabilized optical system.
There are numerous applications for which the MonoSpec 25 is ideal. Use it as a monochromatic illuminator for microscopes, photometers and other spectrometer systems. The MonoSpec 25 performs superbly as a spectrometer measuring absorption, transmission, emission, reflection, fluorescence and phosphorescence. Its versatility has made the MonoSpec 25 the standard monochromator for general use in physics, chemistry, biology and engineering laboratories.
Popular Ruled Diffraction Gratings
|
Groves/mm
|
Blaze
Wavelength
|
Useful
Spectral Range
|
Reciprocal
Linear Dispersion nm/mm
|
|
2360
|
240
nm
|
180
nm-450 nm
|
1.6
|
|
1180
|
300
nm
|
180
nm-550 nm
|
3.3
|
|
1180
|
500
nm
|
350
nm-1.0 µm
|
3.3
|
|
590
|
500
nm
|
300
nm-1.0 µm
|
6.6
|
|
590
|
1.0
µm
|
700
nm-1.8 µm
|
6.6
|
|
295
|
2.1
µm
|
1.8
µm-3.8 µm
|
13.2
|
|
147.5
|
4.0
µm
|
2.6
µm-6 µm
|
25.6
|
|
100
|
6.5
µm
|
4.5
µm-10.8 µm
|
37.8
|
|
50
|
10.0
µm
|
7.0
µm-21.0 µm
|
75.4
|
|
30
|
30.0
µm
|
21.0
µm-40.0 µm
|
128.0
|
MonoSpec 25 Systems & Accessories
82-410
MonoSpec 25 Ebert Monochromator 250 mm focal length, f/3.5, with 150 µ entrance and exit slits and two gratings, one 2360 g/mm, blazed at 300 nm and the other, 1180 g/mm, blazed at 500 nm. (Gratings have 64 mm X 64 mm ruled area.) Contains two digital wavelength indicators and manual sine drive.
82-415
MonoSpec 25 Ebert Monochromator 250 mm focal length, f/3.5, with 150 µ entrance and exit slits and one of the gratings listed below (except 985301017), one holder for two 67 x 67 x 6 mm gratings (11-043). Contains one digital wavelength indicator and manual sine drive.
Includes calibration for any grating ordered with the instrument.
Note: Other slits can be substituted for 150 µ at no charge. For substitution of 2360 g/mm grating, 985301017, add $150.00 to price of 82-415.Accessories
11-043
Dual Grating Holder for holding two 67.5 x 67.5 x 6.4 mm gratings. Interchangeable with one supplied with instrument.
82-420(x)
Kit to Adapt 82-415 with second readout counter and coupling assembly.
15003010
Stepping Motor Drive Kit to convert MonoSpec 25 to a computer controlled scanning monochromator. Includes motor, optical limit switches and all necessary hardware. LambdaSCAN controller sold separately
00-4149
MonoSpec 25 Operator's Manual
Gratings
|
64
mm x 64 mm ruled area on a 67.5 mm x 67.5 mm x 6.4 mm thick
glass blank
|
|
| 985301017 |
Ruled
grating, 2360 g/mm, 240 nm blaze
|
| 985302015 | Ruled grating, 1180 g/mm, 180 nm blaze |
| 985302017 | Ruled grating, 1180 g/mm, 240 nm blaze |
| 985302018 | Ruled grating, 1180 g/mm, 300 nm blaze |
| 985302020 | Ruled grating, 1180 g/mm, 400 nm blaze |
| 985302022 | Ruled grating, 1180 g/mm, 500 nm blaze |
| 985302024 | Ruled grating, 1180 g/mm, 600 nm blaze |
| 985302026 | Ruled grating, 1180 g/mm, 700 nm blaze |
| 985302028 | Ruled grating, 1180 g/mm, 800 nm blaze |
| 985303017 | Ruled grating, 590 g/mm, 240 nm blaze |
| 985303018 | Ruled grating, 590 g/mm, 300 nm blaze |
| 985303020 | Ruled grating, 590 g/mm, 400 nm blaze |
| 985303022 | Ruled grating, 590 g/mm, 500 nm blaze |
| 985303024 | Ruled grating, 590 g/mm, 600 nm blaze |
| 985303027 | Ruled grating, 590 g/mm, 750 nm blaze |
| 985303030 | Ruled grating, 590 g/mm, 1.0 µ blaze |
| 985303031 | Ruled grating, 590 g/mm, 1.2 µ blaze |
| 985303032 | Ruled grating, 590 g/mm, 1.3 µ blaze |
| 985303034 | Ruled grating, 590 g/mm, 1.6 µ blaze |
| 985304016 | Ruled grating, 295 g/mm, 200 nm blaze |
| 985304018 | Ruled grating, 295 g/mm, 300 nm blaze |
| 985304020 | Ruled grating, 295 g/mm, 400 nm blaze |
| 985304022 | Ruled grating, 295 g/mm, 500 nm blaze |
| 985304024 | Ruled grating, 295 g/mm, 600 nm blaze |
| 985304027 | Ruled grating, 295 g/mm, 750 nm blaze |
| 985304030 | Ruled grating, 295 g/mm, 1.0 µ blaze |
| 985304032 | Ruled grating, 295 g/mm, 1.3 µ blaze |
| 985304033 | Ruled grating, 295 g/mm, 1.5 µ blaze |
| 985304034 | Ruled grating, 295 g/mm, 1.6 µ blaze |
| 985304036 | Ruled grating, 295 g/mm, 2.1 µ blaze |
| 985304037 | Ruled grating, 295 g/mm, 2.6 µ blaze |
| 985304818 | Ruled grating, 147.5 g/mm, 300 nm blaze |
| 985304822 | Ruled grating, 147.5 g/mm, 500 nm blaze |
| 985304839 | Ruled grating, 147.5 g/mm, 2.6 µ blaze |
| 985304840 | Ruled grating, 147.5 g/mm, 4.0 µ blaze |
| 985305424 | Ruled grating, 100 g/mm, 600 nm blaze |
| 985305444 | Ruled grating, 100 g/mm, 6.0 µ blaze |
| 985305445 | Ruled grating, 100 g/mm, 6.5 µ blaze |
| 985306950 | Ruled grating, 50 g/mm, 10.0 µ blaze |
| 985307457 | Ruled grating, 40 g/mm, 22.5 µ blaze |
| 985307958 | Ruled grating, 30 g/mm, 30.0 µ blaze |
Many additional options and accessories are available for the MonoSpec 25 models. Please contact the factory or your representative for more information.
|
Specifications
|
|
|
Focal Length:
|
250 mm
|
|
Aperture:
|
f/3.5
|
|
Resolution:
|
0.2 nm with
1200 g/mm grating |
|
Reciprocal
Linear Dispersion:
|
1.6 nm/mm with
1200 g/mm grating |
|
Stray
Light:
|
<0.2%
|
