Hanna Instruments HI 221 User Manual
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Before using this product, make sure that it is entirely suitable for the
environment in which it is used.
Operation of this instrument in residential areas could cause unaccept-
able interferences to radio and TV equipment, requiring the operator to
take all necessary steps to correct interferences.
The glass bulb at the end of the pH electrode is sensitive to electrostatic
discharges. Avoid touching this glass bulb at all times.
During operation, ESD wrist straps should be worn to avoid possible
damage to the electrode by electrostatic discharges.
Any variation introduced by the user to the supplied equipment may
degrade the instrument's EMC performance.
To avoid electrical shock, do not use this instrument when voltages at the
measurement surface exceed 24 VAC or 60 VDC.
To avoid damage or burns, do not perform any measurement in micro-
wave ovens.
RECOMMENDATIONS FOR USERS
Hanna Instruments reserves the right to modify the design, construction
and appearance of its products without advance notice.