Preparation of Labeled Food
111
A
F
2
pn
Fig. 3.2. Accessories for experimental work. A Test tube for wet chromic combustion,
volumes: 5 ml for micromethod and lOml for macromethod; B pipette for the addition
of exact volumes of dichromate solution, volume about 3 ml; a syringe; C flask respirometer for estimation of Cq in CO2 respired and for determination of M by the oxygen
method; D funnel for gentle concentration of microplankton onto the Nucleopore
filter, diameter of working surface 40 mm; E pipette for transferring the animals out
from the device F for washing off the labeled food; pn plankton net
D,4ml
9
Fig. 3.3 A-D. Accessories for arrangement the nutrition experiments. A Container at
the end of the plankton net to collect the planktonic animals for the experiments. B
Pipette for catching and transfering the planktonic animals. C Pipette for addition of
exact volumes of dichromate mixture during microanalysis of organic carbon (capacity
0.3-0.5 ml). D Pipette for extraction of the excess of water from the scintillation vials. a
Windows on both sides of the container covered with plankton net; b plastic body of the
container; c thick silicon tube; d plastic or glass stopper; e metallic weight ring;! syringe;
g end of pipette covered with plankton net fixed with a piece of rubber tube