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• Add 2 drops of HI 93735B-0

Buffer reagent.

• Replace the cap and shake gently to

mix. Wait for 15 seconds.

• Place the cuvet into the holder and

ensure that the notch on the cap is

positioned securely into the groove.

• Press ZERO and "SIP" will blink on the display.

• Wait for a few seconds and the display

will show "-0.0-". Now the meter is

zeroed and ready for measurement.

• Remove the cuvet and add the content of 1

packet of HI 93735C Fixing reagent.

• Replace the cap and shake gently till

dissolution is complete.

Total Hardness LR

x 2

Hanna Instruments C 99 series User Manual

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