3. Measuring Cells
FlowStar2 LB 514
30
a) Measuring cells with solid scintillator
They consist of thin Halar or Teflon hoses filled with fine-grained scintillator
grit (glass, Yttrium glass as scintillator). The scintillator is located stationary
in the cell through which the eluate passes. Both ends of the cell incorpo-
rate frits to prevent that the scintillator grit is flushed out of the cell. A solid
cell generates a certain backpressure which is dependent on the flow rate
and the viscosity of the eluate. In analytical cells the backpressure is ap-
proximately 4 - 6 bar/ml methanol (for further information see Part IV of this
User’s Manual)
Application:
For Alpha and Beta labels:
3
H,
14
C,
35
S,
90
Sr etc.
Volume:
10 - 400 µl (larger volumes on request)
Filling material:
Glass, Yttrium glass
The grain size is optimized with regard to efficiency and backpressure: An-
alytical cells have a small, preparative cells a large grain size.
Handling:
Easy handling, good tolerance of all eluates, rare memory effects, removal
of possible contamination by decontamination solvents possible without
any problem.
Identification:
Measuring cell label - Example:
YG 150 U5D (Yttrium glass solid cells with 150µl volume)
YG 40 S6M (surface treated Yttrium glass microbore solid cells with 40µl
volume)
Caution:
The outlet capillary for solid cells should have an interior
diameter of at least 0.5 mm
.
Please read Chapter 4.2 Connecting Steel Capillaries before
connecting a solid cell.
