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GENERAL DESCRIPTION
HANNA instruments® uses the primary standard AMCO-AEPA-1 to
avoid all formazine-related problems. Formazine is a toxic, unstable
substance, which requires particular care: its standards have to be
prepared only a few minutes before performing the calibration, and
cannot be reused because of their short life. HANNA instruments®
standards are extremely stable, can be reused, and last up to six
months, if free from contamination.
HI93703-11 can be used with both standards.
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