TM8400B-L-00
1 November 2004
6.2.2. STANDARDIZATION PROCEDURE
(a) Thoroughly, but gently, agitate a bottle or vial of standard sea-water
and open (to open vial, score glass, across end piece, and snap off).
Insert open end of vial into the large end of supplied cylindrical
adapter, ensuring snug fit. Standard seawater in bottles generally will
not require the adapter.
(b) Insert pickup tube through adapter and into vial.
(c) Place vial or bottle in bottle holder. Slide platform up until small end
of adapter, or neck of bottle fits tightly inside rubber stopper, forming
an airtight seal. Lock platform in position.
(d) Switch pumps on and flush the conductivity cell three times.
(e) Allow cell to refill and set FUNCTION switch to READ. Allow
display to stabilize. Adjust SUPPRESSION switch until the display
stops flashing and indicates a positive reading. Note reading of entire
display.
(f) Set FUNCTION switch to STANDBY. Flush conductivity cell.
(g) When cell is full, set FUNCTION switch to READ. Allow display to
stabilize. Note reading of entire display.
(h) Repeat steps (f) and (g) until three consecutive identical readings are
obtained.
NOTE: Do not standardize when the vial or bottle contains less
than 15% of its initial volume as errors up to 2 ppm may be
introduced due to possible salts concentration.
(i) Set FUNCTION switch to READ position and, by means of
STANDARDIZE control, adjust display reading to agree with 2 times
conductivity ratio value obtained from standard sea water vial label.
(j) Set FUNCTION switch to STANDBY. Remove standard sea-water
vial. Flush conductivity cell with fresh water to remove salt deposits
and switch pumps off. Insert end of pickup tube into pickup tube
holder to drain. Wipe tube with tissue paper.
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