20
CALIBRATION PROCEDURE FOR RATIO
CALIBRATION PROCEDURE FOR RATIO
CALIBRATION PROCEDURE FOR RATIO
CALIBRATION PROCEDURE FOR RATIO
CALIBRATION PROCEDURE FOR RATIO ///// NNNNNON
ON
ON
ON
ON RATIO
RATIO
RATIO
RATIO
RATIO
TURBIDITY RANGE
TURBIDITY RANGE
TURBIDITY RANGE
TURBIDITY RANGE
TURBIDITY RANGE
HI 88703
has a powerful calibration function that compensates for lamp aging or changing.
The calibration can be done using the suplied calibration solutions or user prepared standards.
HI 88703
turbidimeter is supplied with 5 AMCO standards: <0.1 NTU, 15 NTU, 100,
750NTU and 2000NTU. The Hanna standards are specially designed for this instrument.
Turbidity standards have a shelf life and should not be used after the expiration date.
Alternatively, formazin standards can be used. It is recommended that the turbidity value of
the prepared calibration solutions to be close to the default calibration points.
The first calibration point should be near 0 NTU, the second point can be chosen between 10 and
20 NTU, the third point between 50 and 150 NTU, the fourth point between 600 and 900 NTU and
the fifth point between 1500 and 2500 NTU.
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1
EPA MODE
To round the readings as EPA specifications press
the “
EPA
” functional key. The EPA text is displayed
on the left side of the LCD and the reading is rounded
as follows:
