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The Jacobsen method: germinated seed under
a germination dome.
Seed-Line
The Seed-Line – ideally applicable for
systematic ISTA compliant seed tests
From sample division over purity examination up to determination
of germination – RUMED
®
Germinators are the professional alternative
to cooled incubators, wherever high reproducibility of the results is
required.
Rodewald germinators are mainly consisting
of a tub being filled with silica sand, which
is hanging in a temperature-conditioned
water basin for temperature conditioning
and moistening.
The Rodewald method is particularly
suitable for vegetable or forest seed due to
the adjustable low humidity and the inferior
tendency to fungal growth. The seed is
deposited on filter papers on the sand.
A water channel being integrated in the
sand insertion tub with adjustable level
regulation gives moisture to the seed via
wicks in the sand and the capillary effect
of the sterilized crystal silica sand.
An acrylic glass cover avoids drying-out of
the sand. The glass cover can be steplesly
opened for ventilation. A surrounding
groove avoids dripping of the condensate
water into the sand.
The Rodewald Method
All Jacobsen Germinators can be retrofitted with
lighting without any problems.
The Jacobsen germinator mainly consists
of a germination plate being temperature-
conditioned by means of the water basin
below. The water bath is equipped with
an automatic temperature control.
The germination spirals being equipped
with a paper wick and a paper substrate are
placed on the germination plate. The wick
is being led through slots in the germina-
tion plate and reaches into the water bath
below, thus supplying the required humidity
and the desired temperature to the paper
substrate. The circular filter papers are
covered with a transparent cover dome to
provide the air humidity being required for
the germination. A little hole in the upper
end of that dome ensures sufficient supply
of fresh air and minimum evaporation at
the same time.
Units being executed with active cooling
allow day-night temperature alternation,
as well as any temperature profile.
The Jacobsen Method
Seed samples: With RUMED
®
equipment counting
and dividing become child’s play.
