Photometers
Photometers
Instruments used to measure the intensity of scattered light.
What Is a Photometer?
Photometers are instruments that measure electromagnetic radiation, from ultraviolet to infrared, including the visible spectrum. They convert light into electricity using a photoresistor, photodiode, or photomultiplier. For measuring at a defined wavelength or for analyzing the light’s spectral distribution, the light may also be passed through a filter or a monochromator.
What Is a Photometer Used for?
A light meter, a specific type of photometer, is used to measure the amount of light present. In photography, light meters help the photographer determine the correct shutter speed and f-number selection for the desired exposure. They are also used for cinematography, scene design, architectural lighting design, and for plant growth systems.
Science-related applications for light meters include the measurement of:
- UVA (315 to 400nm) and UVB (280 to 315nm) light for phototherapy or skin treatment
- UVC (100 to 280nm) output from disinfection and sterilization lamps (readout in watts per square centimeter)
- The brightness (luminance) of exit and other signs or displays
- Light source emissions that may help plants grow
- The UV light emission used to harden glues, plastics, or other protective coatings (readout in joules per square centimeter)
- Daylight or output from tungsten, fluorescent, or mercury lamps
Most light meters are portable and may measure light in only a defined section of the spectrum, such as UV light . Some light meters allow you to select the light source and report the results in one or more of the common units: lux, foot-candles, lumens, candelas, or candelas per square meter. Other units include watts or joules per square centimeter.
YSI™ EcoSense 9300 Benchtop Photometer
Portable photometers allow to easily take readings directly in the field for 100+ parameters.
YSI™ Portable Photometers
Portable photometers, allow easy readings directly in the field for 100+ parameters
YSI™ Replacement Phenol Reagent for EcoSense 9300/9500 Photometer
For EcoSense 9300/9500 Photometer.
YSI™ Starter Nickel Reagent Test Kits for EcoSense 9300/9500 Photometer
Nickel test kit for use with for EcoSense 9300 or 9500 Photometers. Eliminate sample preservation by taking your portable, waterproof instruments to the field to perform the analysis on-site. All reagents are safe and easy to use.
YSI™ USB Waterproof Computer/Power Supply Unit Cable for EcoSense 9500 Photometer
For use with EcoSense 9500 photometer.
THERMO SCI 3P AIG PARTS & ACCESSORIES GALLERY PLUS 7L LIQUID WASTE B
NC1746864 GALLERY PLUS 7L LIQUID WASTE B
Lovibond™ EBC ColorPod Handheld Photometer
Automatic grading of beers and malts.
Lovibond™ Honey ColorPod Handheld Photometer
Combines simplicity with accuracy for measurement of color in the honey industry.
Pendotech Pendotech Benchtop Photometer With 280Nm Light Source
Benchtop Photometer w/280nm light source, 4-20mA output, (2) 1 meter fiber optic cables with tethers, (2) optical couplers with tethers to connect to flow cell, 24VDC power supply