Hanna Instruments HI 84185 - Manual (Page 16)

16
MEASUREMENT PROCEDURE
• Fill the beaker up to the 50 mL mark with sample,
place the stir bar into the beaker and then place the
beaker in the appropriate place on the instrument top.
• Place the electrode holder on the top of the beaker
and secure it by turning clockwise. Close all unused
holes of the beaker holder.
• Immerse HI 61101 ammonia electrode and the
HI 7662-T temperature probe approximately 2 cm
(0.8“) into the sample to be tested paying attention
to not touch the stir bar, and press Start.
• Use the 1000 µL automatic pipette to add exactly 1 mL
HI 84185-0 ISA and immediately close the stopper.
• Wait until the reading is stable, CFM key displayed, if
the “Reading confirm” option is selected, and then
press CFM. If the “Reading confirm” option is
disabled the instrument automatically memorizes the
reading when this is stable and waits to add standard.
Until the standard addition is detected the instrument
will beep if beeper is enabled in Setup.
TIPS FOR AN ACCURATE MEASUREMENT
The instructions listed bellow should be carefully followed during analysis to ensure best accuracy.
• Rinse the electrode with distilled or deionized water between samples, and blot dry taking
care not to touch de membrane.
• Select the adequate stability criteria.
• Analyse the wine sample at room temperature.