- 23 -
it into 10% nitric acid solution or 10% hydrochloric acid for 2 minutes, then rinse with
purified water and test again. If the situation does not improve, then users need to replace a
new conductivity electrode.
7.6.6. When it appears an abnormal reading when calibrating or displaying, please set P9 as
“
ON
”
to make the meter restore to default setting mode, and then recalibrate and measure again.
8
Complete Kit
8.1 WS200 pH/ Fluoride meter *1 pc
8.2 201T-S 3-in-1 plastic pH/ATC electrode *1 pc
8.3 2301T-S Conductivity electrode (K=1, ATC) *1pc
8.4 F501 Fluoride combination electrode *1pc
8.5 pH standard buffer solution (pH4.00, pH7.00and pH10.01, 50mL) *1pc/each
8.6 1413μS/cm conductivity buffer solution (50ml) *1pc
8.7 Fluoride calibration solution (0.19ml/L and 19mg/L, 50mL) *1pc/each
8.8 Screw driver *1pc
8.9 Spare AA batteries *3pcs
8.10 Operation manual *1pc
8.11 Carrying case *1pc
9
Warranty
We warrant this instrument to be free from defects in material and workmanship and agrees to repair
or replace free of charge, at option of APERA INSTRUMENTS, LLC, any malfunctioned or damaged
product attributable to responsibility of APERA INSTRUMENTS, LLC for a period of
two years
from the delivery (a
six
-
month
limited warranty applies to probes). This warranty does not apply to
defects resulting from actions such as misuse (violation of the instructions in this manual or operations
in the manner not specified in this manual), improper maintenance, or unauthorized repairs. Warranty
period is the time limit to provide free service for the products purchased by customers, not the service
life of the tester or probe.
