Standard IR Bandpass Filters

In the infrared region of the spectrum, bandpass filters are frequently used for gas analysis applications. Andover offers a standard selection of gas analysis filters at popular wavelengths. We can also produce custom filters at wavelengths up to 14µm. Constructed of hard, durable first-surface dielectric coatings on optical-quality IR-transmitting substrates, these filters will withstand normal cleaning and handling associated with any high-quality optical component. 

For your convenience and economy, we offer the filters in 25mm dia. However, we can produce custom sizes and shapes, as well as custom optical characteristics. Contact our technical sales department for a quotation.

Diameter:25.0+0/-.1mm
Min. Clear Aperture:21mm Dia.
Transmission:75% min, 90% typical
24-hour humidity:per MIL-C-48497A
Moderate Abrasion:per MIL-C-48497A
Adhesion:per MIL-C-48497A

 

Can't find what you're looking for? Check our surplus listings for more options.

GAS DESCRIPTION PART NO. 1-5 pcs. >5 pcs. QTY IN STOCK QTY
+ Water vapor 2700.0nm CWL, 110nm Bandwidth, 25.0 Diameter 2.70GA05-25 $335 $318 7
Center Wavelength 2700.0+30/-30 nm
Bandwidth 110+30/-30 nm
Transmission 75%
Blocking 1x10-3 avg. X-Ray to 30
Size 25.0 +0/-0.25mm
Thickness 1.0 +0.2/-0.2 mm
Gas Water vapor
CSV File (typical) 2.70GA05.csv
Graph Test
QtyPrice
1-5 $335
6+ $318
Estimated delivery: 1-2 days.
Note: Always free ground shipping on all domestic orders.
Click icon to display graph.
+ Water vapor 2950.0nm CWL, 110nm Bandwidth, 25.0 Diameter 2.95GA05-25 $335 $318 11
Center Wavelength 2950.0+30/-30 nm
Bandwidth 110+30/-30 nm
Transmission 75%
Blocking 1x10-3 avg. X-Ray to 30
Size 25.0 +0/-0.25mm
Thickness 1.0 +0.2/-0.2 mm
Gas Water vapor
CSV File (typical) 2.95GA05.csv
Graph Test
QtyPrice
1-5 $335
6+ $318
Estimated delivery: 1-2 days.
Note: Always free ground shipping on all domestic orders.
Click icon to display graph.
+ Methanol and Ethanol 3460.0nm CWL, 140nm Bandwidth, 25.0 Diameter 3.46GA05-25 $335 $318 18
Center Wavelength 3460.0+40/-40 nm
Bandwidth 140+30/-30 nm
Transmission 75%
Blocking 1x10-3 avg. X-Ray to 30
Size 25.0 +0/-0.25mm
Thickness 1.0 +0.2/-0.2 mm
Gas Methanol and Ethanol
CSV File (typical) 3.46GA05.csv
Graph Test
QtyPrice
1-5 $335
6+ $318
Estimated delivery: 1-2 days.
Note: Always free ground shipping on all domestic orders.
Click icon to display graph.
+ Formaldehyde 3600nm CWL, 140nm Bandwidth, 25.0 Diameter 3.60GA05-25 $335 $318 6
Center Wavelength 3600+40/-40 nm
Bandwidth 140+30/-30 nm
Transmission 75%
Blocking 1x10-3 avg. X-Ray to 30
Size 25.0 +0/-0.25mm
Thickness 1.0 +0.2/-0.2 mm
Gas Formaldehyde
CSV File (typical) 3.60GA05.csv
Graph Test
QtyPrice
1-5 $335
6+ $318
Estimated delivery: 1-2 days.
Note: Always free ground shipping on all domestic orders.
Click icon to display graph.
+ SWIR 4000nm CWL, 2000nm Bandwidth, 25.0 Diameter 4.00GA20-25 $335 $318 16
Center Wavelength 4000+200/-200 nm
Bandwidth 2000+200/-200 nm
Transmission 80% (avg)
Blocking T(avg) <0.1 UV to 7000nm
Size 25.0 +0.0/-0.2mm
Thickness 1.00 +0.2/-0.2 mm
Gas SWIR
CSV File (typical) 4.00GA20.csv
Graph Test
QtyPrice
1-5 $335
6+ $318
Estimated delivery: 1-2 days.
Note: Always free ground shipping on all domestic orders.
Click icon to display graph.
+ CO2 4260.0nm CWL, 120nm Bandwidth, 25.0 Diameter 4.26GA05-25 $335 $318 34
Center Wavelength 4260.0+40/-40 nm
Bandwidth 120+30/-30 nm
Transmission 75%
Blocking 1x10-3 avg. X-Ray to 30
Size 25.0 +0/-0.25mm
Thickness 1.0 +0.2/-0.2 mm
Gas CO2
CSV File (typical) 4.26GA05.csv
Graph Test
QtyPrice
1-5 $335
6+ $318
Estimated delivery: 1-2 days.
Note: Always free ground shipping on all domestic orders.
Click icon to display graph.
+ CO 4670.0nm CWL, 150nm Bandwidth, 25.0 Diameter 4.70GA05-25 $335 $318 19
Center Wavelength 4670.0+50/-50 nm
Bandwidth 150+30/-30 nm
Transmission 75%
Blocking 1x10-3 avg. X-Ray to 30
Size 25.0 +0/-0.25mm
Thickness 1.0 +0.2/-0.2 mm
Gas CO
CSV File (typical) 4.70GA05.csv
Graph Test
QtyPrice
1-5 $335
6+ $318
Estimated delivery: 1-2 days.
Note: Always free ground shipping on all domestic orders.
Click icon to display graph.
+ NO 5300.0nm CWL, 420nm Bandwidth, 25.0 Diameter 5.30GA05-25 $335 $318 18
Center Wavelength 5300.0+50/-50 nm
Bandwidth 420+50/-50 nm
Transmission 70%
Blocking 1x10-3 avg. X-Ray to 30
Size 25.0 +0/-0.25mm
Thickness 1.0 +0.2/-0.2 mm
Gas NO
CSV File (typical) 5.30GA05.csv
Graph Test
QtyPrice
1-5 $335
6+ $318
Estimated delivery: 1-2 days.
Note: Always free ground shipping on all domestic orders.
Click icon to display graph.
+ FIR Broadband 10000nm CWL, 4000nm Bandwidth, 25.0 Diameter 10.00GA40-25 $631 $599 12
Center Wavelength 10000+300/-300 nm
Bandwidth 4000+500/-500 nm
Transmission > 80 % Ave
Blocking < 0.1 % (avg) UV to 17 microns
Size 25.0 +0.0/-0.2mm
Thickness 1.0 +0.2/-0.2 mm
Gas FIR Broadband
CSV File (typical) 10.00GA40.csv
Graph Test
QtyPrice
1-5 $631
6+ $599
Estimated delivery: 1-2 days.
Note: Always free ground shipping on all domestic orders.
Click icon to display graph.
+ CO2 Laser 10600nm CWL, 1500nm Bandwidth, 12.5 Diameter 10.60GA15-12.5 $345 $328 0
Center Wavelength 10600+100/-100 nm
Bandwidth 1500+100/-100 nm
Transmission > 80 %
Blocking 1x10-3 avg 200nm to16.5 m
Size 12.5 +0.0/-0.2mm
Thickness 1.0 +0.2/-0.2 mm
Gas CO2 Laser
CSV File (typical) 10.60GA15.csv
Graph Test
QtyPrice
1-5 $345
6+ $328
Estimated delivery: approximately 1 week.
Note: Always free ground shipping on all domestic orders.
Click icon to display graph.
+ CO2 Laser 10600nm CWL, 1500nm Bandwidth, 25.0 Diameter 10.60GA15-25 $631 $599 15
Center Wavelength 10600+100/-100 nm
Bandwidth 1500+100/-100 nm
Transmission > 80 %
Blocking 1x10-3 avg 200nm to16.5 m
Size 25.0 +0.0/-0.2mm
Thickness 1.0 +0.2/-0.2 mm
Gas CO2 Laser
CSV File (typical) 10.60GA15.csv
Graph Test
QtyPrice
1-5 $631
6+ $599
Estimated delivery: 1-2 days.
Note: Always free ground shipping on all domestic orders.
Click icon to display graph.
+ CO2 Laser 10600nm CWL, 1500nm Bandwidth, 50.0 Diameter 10.60GA15-50 $1715 $1629 2
Center Wavelength 10600+100/-100 nm
Bandwidth 1500+100/-100 nm
Transmission > 80 %
Blocking 1x10-3 avg 200nm to16.5 m
Size 50.0 +0.0/-0.2mm
Thickness 1.0 +0.2/-0.2 mm
Gas CO2 Laser
CSV File (typical) 10.60GA15.csv
Graph Test
QtyPrice
1-5 $1715
6+ $1629
Estimated delivery: 1-2 days.
Note: Always free ground shipping on all domestic orders.
Click icon to display graph.