Chapter 2 Measurement
HA-8190V 2-8
2.2.2 Eluents
IMPORTANT:
Use only eluents specified for the instrument.
ARKRAY provides “ELUENT 90A”, “ELUENT 90B”, “ELUENT 90CV”, and "ELUENT 90CV-S" as eluents
specifically for the HA-8190V. Before use, read the package insert that comes with each eluent and observe
all handling instructions.
Avoid mixing of the eluents.
Attach the proper bottle cap (with nozzle) to each eluent A pack, eluent B pack and eluent CV pack.
Connecting the wrong bottle cap to the wrong pack can cause mixing of eluents, producing inaccurate
measurement results. If the wrong bottle cap is attached, wash the nozzle and chamber, then attach the
correct bottle cap (see “5.5.4. If Eluent Packs Are Incorrectly Attached” on page 5-37).
When storing the eluents:
Store unopened eluent packs at a temperature between 3°C and 30°C, avoiding direct sunlight. Once
opened, use the eluent within one month, even if it is before expiration date.
Observe expiration dates.
Do not use eluent packs beyond their expiration dates. The expiration dates are written on both the box and
pack label.
Replace the pack.
Replace the eluent pack with a new one even if a small volume of eluent remains. Adding new eluent to the
old pack can cause inaccurate measurement results.
Allow eluents to adjust to room temperature before use.
If eluents are stored in a refrigerator, allow them to adjust to the same environment as the instrument for at
least one hour before placing them on the instrument.
NOTE:
Be sure to hold eluent packs by the hard plastic neck. Do not hold the eluent packs by the soft aluminium
bag. Eluent may spill and damage the instrument.
Regardless of the measurement mode in use, always perform operations with all eluents (A, B and CV) set
in the instrument.
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