Ocean Optics LPC-500CM - Manual (Page 19)

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Chapter 3
Operation
Overview
Using your LWCC system you can measure liquids
 In a continuous flow, or
 Using discrete samples
Caution
Materials exposed to fluid in the LWCC are CTFE, PEEK and fused silica. Any
chemical that could harm these substances should not be used in the LWCC. For
example, hydrofluoride (HF) dissolves silica, and PEEK can be damaged by
concentrated sulfuric and nitric acids (40% w/w or greater).
Keeping the LWCC clean is essential for a stable result. See Cleaning in Chapter 4: Maintenance .
Measuring in a Continuous Flow
► Procedure
1. To help prevent clogging the ports, filter all samples using a 0.2µm vacuum filtration disc before
injection into the LWCC.
2. Connect the LWCC to a light source and a detector with fiber optic cables.
3. Clean the LWCC using the standard cleaning procedure described in Chapter 4: Maintenance .
4. Connect the liquid source to the LWCC system. The standard Luer fitting at the LWCC input and
output can be replaced with
1
/
16
-inch (1.64 mm) tubing if necessary. A pressure of approx.
1.5-3.0 PSI is necessary to run liquid through the LWCC.