Walz

Walz makes PAM fluorometers, which analyze chlorophyll fluorescence to study photosynthesis. HenSistemas carries the MINI-PAM-II, a portable unit for field research; the DIVING-PAM-II, an underwater fluorometer with a miniature spectrometer for measuring photosynthetic organisms in their own habitat; the compact JUNIOR-PAM, designed for teaching; and the DUAL-KLAS-NIR, which also follows P700, plastocyanin and ferredoxin.

The ULM-500 rounds out the range: a universal light meter that also works as a data logger.