Citizen Science/Open Fluorometer Project/Resources/Yang 2009 Fluorometer
From OpenWetWare
Jump to navigationJump to search
Design overview
Bill of materials
- Optics:
- Concave blue LED (470nm)
- LEDs were undergone continuous working under 20 mA current at least for 150 h to eliminate the initial low-frequency noise [1] W. Tong and E.S. Yeung, J. Chromatogr. A 718 (1995), p. 177. Abstract | PDF (607 K) | View Record in Scopus | Cited By in Scopus (28)[1].
- lenses taken down from a waste DVD-ROM (Pioneer Electronic Co., Japan)
- 25× ocular obtained from a pen microscope (Xiguang Technology Co., Xi’an, China)
- 535-nm band-pass filter (10-nm band-pass, Shenyang HuiBo Optical Technology Co., Shenyang, China)
- 1-mm pinhole
- Photodiode (OPT301, Texas Instruments, Dallas, USA)
- Concave blue LED (470nm)
- Electronics:
- high gain amplifier AD620 (Analog Devices Instruments, Norwood, USA)
- data collecting card (USB-6008, FanHua Measurement & Control Technology Co., Beijing, China)
Published performances
- LOD 0.92 μM sodium fluorescein (S/N = 3)
- Focusing spot diameter of 80 μm