BP200-11带通滤光片(CWL=200nm,FWHM=11nm)

Water Quality Monitoring

Many common water pollutants (like nitrates and dissolved organic waste) naturally absorb deep ultraviolet light right around the 200nm mark. By shining light through a water sample and using this filter to isolate exactly 200nm, sensors can measure how much light gets absorbed to figure out how contaminated the water is. The filter's high blocking power ensures that no visible room light or infrared heat confuses the sensitive detector.

Recommended light source:

• Deuterium Lamp: It naturally produces a strong, smooth, and steady stream of deep UV light, making it the most reliable choice for highly accurate, plug-in laboratory instruments.
• Xenon Flash Lamp: It produces bright, fast pulses of broad UV light and uses very little power between flashes, making it perfect for battery-operated, portable water testing devices used out in the field.

Biological and Protein Analysis

The fundamental building blocks of proteins (called peptide bonds) act like sponges for 200nm UV light. Scientists use laboratory instruments equipped with this filter to measure the exact amount of protein in a liquid sample (like cell extracts) without needing to add complex chemical dyes. The narrow 11nm window guarantees that only the exact wavelength needed for protein detection is measured, ignoring other biological materials.

Recommended light source:

• Deuterium Lamp: Provides the highly stable, continuous UV light necessary so that delicate medical and biological tests do not fluctuate during a reading.
• Deep UV-C LEDs: While a newer technology at 200nm, they are tiny, emit very little heat, and turn on instantly, making them ideal for modern, compact biological lab equipment where space and temperature control are critical.