VITAMIN D UV METER

D3 IU PER MINUTE

Specifications
Sensor

Aluminum Galium Nitride (AlGaN) Photodiode with UG-11 filter and PTFE diffuser cap.

Radiometer

Peak ultraviolet response

bandwidth: 280-298 nm

Total UVR response: <280-400nm, Diffey EAS

Display: 3.5 digit LCD

Resolution: 1 IU/minute

Power Source: 9V DC battery

Accuracy: Eeff ± 10% ref NIST. Vit D3 approximate.

Proper usage of Solarmeter Vitamin D3 IU per Minute International Units (IU) of natural vitamin D3 (converted from 7-DHC) per minute of ultraviolet B exposure instructions:
  This instrument is designed for both outdoor solar measurement and indoor UVR appliance measurement. The sensor/detector response follows the Diffey Erythemal Action Spectrum (EAS) effective irradiance (Eeff), and thus remains accurate for various spectral power distributions. Eeff is used here as a proxy for Vitamin D action spectrum weighted irradiance (Deff), which is very similar but cuts off at 330 nm. Spectral radiometer tests have shown Eeff and Deff to be virtually linearly proportional outdoors ± ~4 hours from solar noon, and indoors for most commonly used UVR lamps.

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