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CALIBRATION MENU
The Compact Turbimeter is delivered with a stored
calibration carried out on primary Formazin standards
and validated as part of the production process. For
field use, a set of calibration standards are provided as
part of the kit.
Recalibration is only required if the standards provided
show an unacceptable level of variation from the stated
values on read-back.
Two different methods of calibration are available for
the Turbimeter.
The calibration methods are :-
SDVB – The use of SDVB for field calibration of turbidity
meters is preferable due to the improved stability and
handling compared to Formazin. When calibrating
turbidity instruments SDVB standards are assigned to a
specific model and cannot be transferred. Using SDVB
standards from another manufacturer may differ greatly
when applied to the Turbimeter. This is normal behavior
and should not cause concern.
Formazin – freshly prepared standards can also be
used for calibration where available. Formazin is used
as the primary calibration material for the Turbimeter
and can also be used to align the calibration of different
instruments when discrepancies occur. Preparation of
Formazin standards from 4000 NTU stock solution is
required to be within the stated limits detailed below.
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