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Bestselling Bi685-77 Narrow Bandwidth Interference Dark Red Bandpass Filter M77x0.75 Your 65% Coupon Inside [ycb1K0W2]

$56.99 $182.99 -69%

Bi685-77 Narrow Bandwidth Interference Dark Red Bandpass FilterDiscover the MidOpt Bi685-77 Narrow Bandwidth Interference Dark Red Bandpass Filter, a precision instrument designed for advanced aerial vegetative health monitoring. This filter is tailo

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Bestselling Bi685-77 Narrow Bandwidth Interference Dark Red Bandpass Filter M77x0.75 Your 65% Coupon Inside [ycb1K0W2]

Bi685-77 Narrow Bandwidth Interference Dark Red Bandpass Filter

Discover the MidOpt Bi685-77 Narrow Bandwidth Interference Dark Red Bandpass Filter, a precision instrument designed for advanced aerial vegetative health monitoring. This filter is tailored to isolate the critical 685nm wavelength range, essential for analyzing red light vegetative health indices. Its unique design ensures that when plants are under stress or beginning to die, the filter can accurately detect changes in photosynthesis, providing valuable insights for agricultural applications.

Technical Specifications and Features

With a narrow bandwidth of 25nm, the Bi685 filter offers exceptional precision, making it ideal for separating the 685nm range from other red light wavelengths. Key features include a peak transmission of ≥90%, a useful range of 675nm - 692nm, and a tolerance of +/- 5nm. The filter is constructed with a 40/20 surface quality, ensuring clarity and durability. Technical specifications are as follows:
  • Filter Model: Bi685
  • Filter Type: Narrow Bandwidth Interference Dark Red Bandpass
  • Useful Range: 675nm - 692nm

Applications and Benefits

Whether you are a professional in agricultural health monitoring or a hobbyist looking to enhance your observation skills, the Bi685-77 filter is a versatile tool. Its use with dark red laser diodes and LED lighting in the 680-690nm range is particularly effective, especially in environments where ambient light can be overwhelming. This filter is a must-have for anyone needing precise and reliable measurements in the field of plant health analysis. Experience the benefits of this innovative filter and elevate your monitoring capabilities.

What Our Customers Say

January 18, 2026

Absolutely no complaints!

This is exactly as advertised, if not better.

- Kimberly G..

January 18, 2026

Absolutely no complaints!

I find it to be extremely effective.

- Mia V..

January 18, 2026

Absolutely no complaints!

Worth every single penny.

- William F..

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