Bio-Rad BioLogic Sample Loading Loops - Manual (Page 9)

Make Connections
1. To make a collet/nut connection at the end of the DynaLoop, slide a collet/nut fitting
and ferrule over the end of the cut tubing. Make sure the tapered end of the ferrule
faces the tubing end. The blunt end of the ferrule must face the collet/nut (Figure 4).
2. Push the tubing all the way into the connector until the tube bottoms in the fitting.
3. While pressing the tubing securely into the fitting, slide the ferrule and collet/nut toward
the DynaLoop and finger-tighten the collet/nut. Do not overtighten.
Fig. 4. DynaLoop plumbing connections.
Connection to AVR7-3 Injection Valve
There are two stages to installing the DynaLoop sample loop to a or AVR7-3 injection
valve:
• Attaching BioLogic fittings to the DynaLoop
• Purging the DynaLoop of air
Connect Tubing
1. To attach the 1/8” 1/4-28 fittings to the loop for connection to the injection valve, slide a
1/4-28 nut onto the sample end tubing of the DynaLoop. Slide a yellow ferrule over the
end of the tubing. The blunt end of the ferrule must face away from the nut (Figure 5).
Repeat this procedure for the buffer end tubing.
2. Remove the sample loop currently connected to the injection valve.
Fig. 5. Injection valve plumbing connections.
1/8" Tubing
Cut the
tubing
1/4-28 Nut
Yellow ferrule
Ferrule Collet/nut
Collet/nut
Buffer end Sample end
5