Pyxis SP-210 - 6 Measurement; Bleach Measurement; Suspended Solids Chromaticity Interference

6 Measurement
6.1 Bleach Measurement
1. When powered on, the SP-210 will be in the Bleach measurement mode. The sample can be trans-
ferred to the sample cell using a pipee or sample bole, or sample valve.
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NOTE
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Special care should be taken when pouring the sample into the cell to avoid
air bubble entrainment, which can interfere with reading accuracy.
WARNING
Sodium hypochlorite soluon is a highly corrosive and dangerous substance, avoid direct contact with
the skin or eyes, in case of contact with sodium hypochlorite soluon, please immediately wash the
contact area with clean water connuously.
2. Before beginning a measurement, use pure water to rinse the sample cell at least 2–3 mes. then ll
the sample cell with pure water and click Zero for background calibraon.
3. Pour out the pure water in the sample cell, rinse the sample cell with the Bleach soluon to rinse the
sample cell at least 2–3 mes, then ll the sample cell with the Bleach soluon to be tested, and click
”Read” to Read the value.
4. The screen interface will display the concentraon of Bleach soluon.
5. Aer the measurement is completed, pour out the Bleach soluon and ush the sample cell with
clean water unl there is no sodium hypochlorite residue.
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NOTE
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The me required to reach a stable reading may be slightly longer if the wa-
ter sample temperature is signicantly dierent than the environmental temperature
at which the SP-210 had been equilibrated (stored).
The SP-210 does not need to be turned o between measurements of samples. Rinsing the sample cell
several mes between samples is recommended. Ambient light does not aect the measurement. The
sample cell does not need to be covered during the measurement.
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NOTE
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If the screen goes dark, the mer will quickly turn o the SP-210. Pressing any key
will turn the mer back on. The mer is used to extend baery life.
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NOTE
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To avoid residue or contaminaon from the previous soluon, please clean the
sample cell at least three mes.
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NOTE
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Be sure to clean the sample cell aer each use of the SP-210 and dry it with a clean
paper towel to avoid over force damage.
6.2 Suspended Solids Chromacity Interference
The SP-210 has extra channels to measure sample suspended solids and color which are used to automa-
cally compensate for any interference caused by these contaminants as high as 20–50 mg/L. If the sample
turbidity and color values determined are too high, an error will show. In such a case, the user should
pre-lter the sample for the Bleach measurement within the compensaon capability of the SP-210.
SP-210 User Manual service@pyxis-lab.com | +1 (866) 203-8397 6