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Description
Midwest Optical Systems Bi850-49Midwest Optical Systems Bi850 49 Near IR Interference Bandpass M49 Bandpass Interference Filters Bi Series Narrow Interference Bandwidth 20 35nm FWHM; Narrow bandwidth High transmission ? 85% Designed for use with laser diodes Ideal wavelength separation when multiple light sources of similar wavelengths are present Reflective, mirror type surface that helps minimize thermal effects Available in sizes up to 79. 5mm sq. APPLICATIONS: Bi Series are
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Best in 7 days
Best in 7 days
Best in 7 days
Best in 7 days
4.5 ★★★★★
Based on 385 reviews
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Product Reviews
★★★★★ 5
Dog jerky treats
Flavor Name: Beef, Size: 6 Ounce (Pack of 1)
My dogs love these treats. They stay moist in the bag. They are just the right size and thickness
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 23, 2026
★★★★★ 4
Tasty treats, but don’t like the size.
Flavor Name: Beef, Size: 6 Ounce (Pack of 1)
Dogs loved them, and it’s a great price for the amount of ounces you receive, but the individual pieces are too big - only 8 total in the package. I break them in half for my two dogs.
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Reviewed in the United States on October 15, 2025
★★★★★ 5
Good treats
Flavor Name: Beef, Size: 6 Ounce (Pack of 1)
Dogs love these! Look forward to snack time.
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Reviewed in the United States on May 13, 2026
★★★★★ 5
Dog LOVED these treats ...
Flavor Name: Beef, Size: 1.5 Pound (Pack of 1)
Dog LOVED these treats - I LOVED the fact you can portion it out as you want. They come in soft strips which are easy to manage & portion out. Great value overall ...
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Reviewed in the United States on May 21, 2026
★★★★★ 5
My dogs think these are actual steak bites
Flavor Name: Beef, Size: 1.5 Pound (Pack of 1)
I’ve tried a lot of treats and my dogs usually get bored after a while, but they go crazy every single time I grab this bag. The pieces are soft and easy to break apart, which is perfect for training or smaller bites. I also like that they don’t smell horrible like some jerky treats do. My picky dog even listens better when I have these in my pocket, so that says a lot. Great size bag for the price and they stay fresh — definitely a repeat buy in our house.
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Reviewed in the United States on February 18, 2026
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