A&D Weighing AD-1690 - Manual (Page 5)

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2. FEATURES
- This Leak Tester judges a leak by a pressure change, after the initial pressure is set
inside the instrument, to a maximum of -20kPa ± 4kPa.
The Leak Tester can verify a leak in a small instrument easily (Example: Micro
pipette. etc).
The amount, -20kPa, attained by evacuating the air with the Leak Tester, is
approximately 0.2 atmospheres (based on atmospheric pressure at sea level).
(100kPa is approximately 1 atmosphere (based on atmospheric pressure at sea
level).)
- This Leak Tester is a tool for judging leakage, and it can not measure pressure
values accurately. The Leak Tester displays -20kPa as a reference pressure and
measures leakage as a pressure change from this amount.
- This Leak Tester is designed to test the leakage of a pipette or dispenser and prevent
foreign particle from invading the Leak Tester when evacuating the air at the nozzle of the
instrument.
This Leak Tester is protected against invading dust by an air filter located on the
main unit bottom side.
- The accessories provide attachments for three different pipettes tip sizes.
You can select an attachment where the tip and pipette size match up.
With the Micro pipette, the available test capacity is up to 10000μℓ.