- Order number: PAR-BTA
- Supplier Name: Vernier Science Education
- Supplier Number: PAR-BTA
- Warranty(Years): 2
The PAR (Photosynthetically Active Radiation) Sensor reports the Photosynthetic Photon Flux Density (PPFD), which corresponds to micromoles of photons per meter squared per second (μmol m-2 s-1). This is the power of electromagnetic radiation in the spectral range that is used by plants for photosynthesis (400–700 nm). It features a waterproof sensor head and can be used to measure PPFD from sunlight and electric light sources.
This sensor is ideal for experiments investigating photosynthesis and primary productivity and can be used in many agricultural and environmental science applications.
PAR Range:
0 to 2000 μmol m-2 s-1 (PPFD) in full sun
Absolute Accuracy:
±5%
Typical Resolution:
1 μmol m-2 s-1 (PPFD)
grade: | Diploma/ Vocational/ Uni |
Subject: | Biology, physics, Vernier |

Celebrating its 35th anniversary in 2016, Vernier Software & Technology continues to be a leading innovator of scientific data-collection technology. Focused on science, technology, engineering, and mathematics (STEM), Vernier is dedicated to developing creative ways to teach and learn using hands-on science and math. Vernier creates easy-to-use and affordable science interfaces, sensors, and graphing/analysis software. With world-wide distribution to over 140 countries, Vernier products are used by educators and students from elementary school to college. Vernier’s technology-based solutions enhance STEM education, increase learning, and build students’ critical thinking skills. Vernier’s business culture is grounded in Earth-friendly policies and practices, and the company provides a family-friendly workplace.