Advanced Instruments A2O User Manual

19
Instrument Operation
Primary tube carousel (Figure 3)
The primary carousel holds up to 20 primary tubes containing samples
to be tested. The product is designed to acquire samples from the fol-
lowing types of primary tubes:
• Glass or plastic. • 75 to 100 mm in length.
• 11 to 17 mm in diameter. • Spherical, conical or flat bottom.
Insert primary tubes into the primary carousel so that the tube bottoms
contact the tabs at the bottoms of the carousel tube holders. If the pri-
mary tubes contain barcodes with sample identification information,
rotate the tubes until the barcodes are outwardly visible in the tube hold-
er slots.
CAUTION Remove all caps from the primary tubes. The pipettor tip
is not designed to pierce the caps. Failure to remove the
caps will result in the A
2
O halting operation when the
pipettor contacts the cap, and could damage the pipettor.
Low volume inserts can be used to hold small sample volumes to be
tested. When using these smaller receptacles, insert them into the open
ends of primary tubes that have been placed into the primary carousel.
CAUTION The total height of the primary tube and a low volume
insert (if used) must not exceed 115 mm to avoid the
pipettor striking the top of the insert and causing damage
to the product and the primary tube.
Table 2 specifies the minimum volumes required in typical sizes of sam-
ple receptacles to test one sample while ensuring proper operation of the
liquid level detection and pipettor systems.
CAUTIONS When tubes longer than 100 mm are placed next to tubes
of shorter lengths, all
tubes must have minimum sample
volumes of 2 mL to prevent the pipettor from striking the
tops of the taller tubes while attempting to aspirate sam-
ples from the shorter tubes.

Advanced Instruments A2O Specifications

General

Brand	Advanced Instruments
Model	A2O
Category	Measuring Instruments
Language	English