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Direct linkWigton, Benjamin T.; Chohan, Balwant S.; Kreuter, Rod; Sykes, Dan – Journal of Chemical Education, 2011
A compact, rugged, and portable fluorimeter was designed and constructed using a 460 nm light-emitting diode for the excitation and a silicon photodiode for detection. The total cost of such an instrument is less than $110, thus allowing for deployment of multiple instruments at low cost. The fluorimeter is easy to operate and has been…
Descriptors: Teaching Methods, Measurement Equipment, Science Instruction, Laboratory Equipment
Wigton, Benjamin T.; Chohan, Balwant S.; McDonald, Cole; Johnson, Matt; Schunk, Doug; Kreuter, Rod; Sykes, Dan – Journal of Chemical Education, 2011
A low-cost portable fluorimeter was constructed using a 360 nm LED for excitation and a silicon photodiode for detection. The instrument is simple to operate and has been used to investigate fluorescent whitening agents extracted from various brands of paper, to determine the linear range and limit of detection of quinine in various commercial…
Descriptors: Science Experiments, Middle Schools, High Schools, College Science
