We also provide bespoke wavelengths.  If the wavelength you need is not listed here please contact us.

The Four channel TO (Quad) range has an extra list of available wavelengths, see table below.

If you cannot find what you need here, please contact us.

The following filters can be configured in four channel TOs (Quads) upon request. Please inquire regarding other filter requirements.

CWL µm / (HPB nm) Use
2.55 / (90)
2.9 / (300)
3.3 / (160) CH4
3.33 / (160) H-C
3.38 / (190) H-C
3.7 / (110) Reference
3.9 / (200) N2O
3.91 / (90) Reference
4.26 / (180) CO2
4.43 / (60) CO2 (Special)
4.64 / (90) CO
4.64 / (180) CO (Narrow)
4.85 / (90)
4.9 / (130) Reference
5.3 / (180) NO
5.6 / (80) Milk, Reference
5.73 / (80) Milk, Fat
6.2 / (200) NO2
6.46 / (130) Milk, Protein
6.7 / (120) Milk, Reference
7.3 / (200) SO2
8.01 / (440)
8.42 / (180) Refrigerants, Anaesthetics
8.55 / (180) Anaesthetics
8.75 / (220) Anaesthetics
9.5 / (400) Sugar, Ethanol
9.61 / (150) Milk, Lactose, Sugar
9.65 / (220) Anaesthetics
10.27 / (210)
12.23 / (210) Anaesthetics