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will cause big error to turbidity measurement. So, the vial should be left stand still for 2 to 5 minutes
to eliminate potential air bubbles before measuring. We recommend using the same mixing
procedure and the same waiting time for degassing before comparing measurements.
d)
Other Requirements
⚫
On the premise of ensuring evenly distributed samples, sample solution should be measured
immediately to prevent temperature changing and precipitates from affecting measurements.
⚫
Avoid sample dilution for measurement as much as possible.
⚫
Avoid operating under direct sunlight.
⚫
Do not pour solution into the sample vial holder. Sample vials must be used for measurement.
⚫
Please do not wash the sample vial holder as it may damage the optical structure.
6
WARRANTY
We warrant this instrument to be free from defects in material and workmanship and agree to repair or
replace free of charge, at the option of APERA INSTRUMENTS, LLC, any malfunctioned or damaged
product attributable to the responsibility of APERA INSTRUMENTS, LLC for a period of TWO YEARS for
the instrument from the delivery.
This limited warranty does NOT cover any issues due to:
⚫
Accidental damage
⚫
Improper use
⚫
Normal wear and tear
⚫
Transportation
⚫
Storage
⚫
Failure to follow the product instructions
⚫
Unauthorized maintenance, modifications, combination or use with any products, materials,
processes, systems or other matter
⚫
Unauthorized repair
⚫
External causes such as accidents, abuse, or other actions or events beyond our reasonable
control.
