Section 1
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6200018overview.fm
General Description
1.2.7 Vortex Sample Conditioning Block
The sample conditioning block consists of a 0.5 µm ceramic filter held within a
flow block. Unfiltered sample flows around the outside of the filter and serves
to continuously self-clean the filter element. Sample is drawn through the filter
on demand. Regular maintenance of the sample conditioning is required for
proper operation.
1.2.8 High Range Hardness Reagents
The APA 6000™ High Range Hardness Process analyzer uses six reagents.
Each is supplied in a 1-L bottle designed to provide reagents for 30 days of
continuous use.
•
Reagent 1 is a masking solution that adjusts the pH of the sample.
•
Reagent 2 is an indicator used to determine the endpoints of the titration.
It is supplied as a kit containing a solution and a powder. The components
must be mixed just before use to ensure optimal performance. Add the
powder to the solution and stir or shake until the powder is completely
dissolved. Once prepared, the solution is stable for 3 months.
•
Reagent 3 is the titrant that reacts with the hardness in the sample.
•
Standards 1 and 2 are used together to perform a multiple-point
calibration. Standard 1 is a 0-mg/L as CaCO
3
sodium carbonate solution.
Standard 2 is a 1000-mg/L as CaCO
3
sodium carbonate solution.
•
The sixth reagent, the Cleaning Solution, cleans the system
during the Prime and Instrument Clean functions. Initially, a different
cleaning solution (Cat. No. 26974-53) may be used to make sure all
parts are wetted.
