POM tube, at one side, port for light detection, port for fluorescence excitation by blue (452 nm max) or green (525 nm max) LEDs, and port for white light from a tungsten lamp for reflection measurements; at the opposite side, 4-pole underwater socket. Including a 160 cm length, 100 g weight, connection cable with 4-pole underwater plug and 4-pole female plug connecting to the ports for LEAF CLIP or AUX of the MINI-PAM-II
Spectrometer module
Hamamatsu micro-spectrometer, spectral range from 400 to 800 nm, spectral resolution between 8 and 10 nm. Maximum PAR: 4000 µmol m-2 s-1 for illumination having spectral characteristics similar to sunlight
Flat Entrance Optics SPEC/P
Hard-anodized aluminum rod of 10 mm diameter and 50 mm length with internal light guide, at one end with lateral light entrance through a 5 mm diameter diffusor and the opposite end inserted in a mounting plate (diameter 33 mm, height 5 mm)
Fluorescence and Reflection Optics SPEC/R
Spectrometer cap consisting of POM: maximum diameter 35 mm, height 13 mm, weight 16 g. With central 5 mm x 16 mm groove accommodating Perspex light guides for blue and green light for fluorescence excitation, and for white light for reflection measurements. With 3 mm diameter central drilled hole as light channel to the detector window of the spectrometer. Including sample cap to fix sample (maximum diameter 40 mm, height 10 mm, weight 8 g) and 10 mm thick reflectance standard of Zenith Polymer. Spectrometer and sample caps padded with foam rubber, both parts have magnets build in to attract each other and, thus, to hold the sample