Scitec Instruments Ltd Scitec Instruments, optical choppers, optical, lockin amplifiers, infrared, infrared detectors, detectors, infrared LEDs, LEDs, infrared sources, sources, resonant modulators, fibre optic, uv photodiodes, uv, power meters, energy meters, digital lock-in, lockin, lock-in, laser safety eyewear, safety goggles, laser safety goggles, laser safety glasses, safety glasses Scitec Instruments offers the following products: optical choppers; lockin amplifiers; infrared detectors, leds and sources; modulators; fibre optic products; uv photodiodes; power & energy meters.