MINI-PAM-II Photosynthesis Yield Analyzer WALZ




Photosynthesis Yield Analyzer WALZ

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Type of Instrument Chlorophyll Fluorometers
The instrument measures: Fluorescence

The new MINI-PAM-II fluorometer combines the merits of its predecessor “MINI-PAM” with most modern LED and computer technology.

Sensitivity, small dimensions, reliability under rugged conditions, and simple execution of fluorescence analysis makes the MINI-PAM-II the new standard for PAM fluorometry in field research.


Well-tested fiberoptics with 5.5 mm or 2 mm active diameter reaches even hidden samples.

Measurements under field conditions are easily controlled and monitored by a transflective touchscreen.

Energy-efficient LED sources, storage capacity of 27,000 data sets, and easy replaceable off-the-shelf batteries permit long term research campaigns at remote places.

A new fully digital leaf clip combines fluorescence analysis with measurements of photosynthetically active radiation (PAR), leaf temperature and relative humidity.

Optoelectronic Unit

Measuring light:Blue (470 nm) LED, standard modulation frequencies 5 to 25 Hz adjustable in increments of 5 Hz and 100 Hz, measuring light PAR at standard settings = 0.05 μmol m-2 s-1. Fluorescence at wavelengths greater than 630 nm is measured

Actinic light: Same blue LED as for measuring light, maximum actinic PAR = 3000 μmol m-2 s-1, maximum PAR of saturation pulses = 6000 μmol m-2s-1 adjustable at increments of 500 μmol m-2 s-1

Optoelectronic Unit

Measuring light: Red (655 nm) LED, modulation frequencies and PAR as described for MINI-PAM-II/B. Fluorescence at wavelengths greater than 700 nm is measured

Actinic light: Same red LED as for measuring light, maximum PAR of actinic light and saturation pulses as described for MINI-PAM-II/B

Optoelectronic Unit

Far red light: Peak emission at 735 nm

Signal detection: PIN photodiode protected by long-pass and a short-pass filters

Data memory: Flash memory, 8 MB, providing memory for more than 27000 saturation pulse analyses

Display: Backlit 160 x 104 dots (78 x 61 mm) transflective B/W LCD display with resistive touchscreen

Ports: Ports for fiberoptics, USB cable, external light source, 2035-B leaf clip, auxiliaries and 12 V DC power supply

Power supply: 6 AA (Mignon) rechargeable batteries (Eneloop 1.2 V/2 Ah), providing power for up to 1000 yield measurements; 6 spare batteries, automatic power/off, battery charger (100 to 240 V AC, 50-60 Hz, 0.35 A) for 1 to 8 AA/AAA NI-MH/NI-CD batteries, 12 V 5.5 A power supply MINI PAM-II/N

Operating temperature: -5 to +45 °C (non-condensing)

Dimensions: 17.2 cm x 11.2 cm x 7.6 cm (L x W x H)

Weight: 1.5 kg (incl. batteries)

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