Operation
Preparation
1. Place the aluminium insert blocks to be used into the Dri-Block
®
unit. The blocks should touch each other
and be positioned centrally.
2. Loosen the locking knob on the carriage. Remove the gas chamber, disconnecting the gas pipe if necessary,
and lay the chamber upside down on a suitable work surface.
3. Insert the hyperdermic needles in the pattern to suit the test tubes to be placed in the heater.
The needle guide holes are labelled with a letter corresponding with the type of insert block used in the heater.
These are listed in the following table. As an example if you use the block for twelve 15mm test tubes (e.g.
block number F3506) you would place a needle in all the holes labelled C.
Only Sample Concentrators with the part number FSC496D or a replacement head part number 6106467 will
have the 96 well array.
Tube size & diameter
Hole array
Hole label
5 x 6 deep
30
A
4 x 5 deep
20
B
3 x 4 deep
12
C
8 hole off-set array, e.g. F4490
D
Press each needle firmly, pointed end first, through the guide holes and through the sealing pad behind so
that it is held firmly in position. Build up the desired pattern of needles to suit the arrangement of test tubes
to be used. Do not put a needle in any position which will not have a corresponding sample to be concentrated
as this will only waste gas. The needles may be removed and replaced many times as the pad is self sealing.
4. Replace the gas chamber onto the carriage and tighten the locking knob. Re-connect the gas pipe if necessary.
5
