BUCHI NIRFlex N-500 - Manual (Page 34)

4 Description of function
34 NIRFlex N-500 Operation Manual, Version F
4 .6 .10 Spinner add-on
NIRFlex Solids in combination with the Spinner add-on is the ideal configuration to measure smaller
solid samples whereas the volume of a petri dish is too big. This add-on can also be used with a
transflectance cover to analyze liquids (e.g. solvents or milk). The transflectance technique is suitable
for customers, who analyze liquids occasionally.
Spinner add-on
Cuvettes (i.e. Hellma cuvette) or glass vials with a diameter of 34 mm can be used as sample vessel in
the motor-driven Spinner. For reference measurement the Spinner can hold the External Reference.
4 .6 .11 Flow-cell adapter add-on
The NIRFlex Solids with flow-cell adapter add-on is the ideal configuration to measure liquids (e.g.
solvents and milk.) in a quartz flow-through cuvette with 1 mm pathlength.
Flow-cell adapter add-on
To connect the flow-cell, silicone tubes with 4 mm inner and up to 7 mm outer diameter can be used.
External referencing requires a clean and dry flow-cell. In some applications, referencing can also be
done with measurement solvent in the flow-cell.