Manual

Turn the ﬂ ow adjust screw (Figure 4, #2) for the appropriate

port of the low ﬂ ow holder until the desired ﬂ ow rate is

achieved through the tube. Turn clockwise to decrease the

ﬂ ow.

Do not adjust the ﬂ ow on the pump. Adjust the ﬂ ow only by

using the ﬂ ow adjust screw on the low ﬂ ow holder.

Do not exceed 500 ml/min ﬂ ow rate per tube.

When the desired ﬂ ow is set on the

initial tube, place pump in Hold by

pressing Flow and Battery Check.

Remove the calibrator from the tube

and connect to the exposed end of

the next sorbent tube. Press Flow and

Battery Check and repeat the ﬂ ow

adjustment process until all tubes are

ﬂ ow calibrated. Changing the ﬂ ow on

one tube will not affect the ﬂ ow rate

through the remaining tubes.

Do not exceed 500 ml/min ﬂ ow rate per tube.

For tri and quad models, ﬁ rst rotate each anti-tamper cover

(Figures 4 [on page 13] and 5) to expose the ﬂ ow adjust

screws, then adjust the appropriate screw until calibrator

indicates the desired ﬂ ow.

When the ﬂ ow rate is set for each tube, press Flow and

Battery Check to place the pump in Hold and disconnect the

calibrator.

Replace the sampling media used for calibration with

unexposed media for sample collection. Use a protective tube

cover to prevent tube breakage.

If sampling with fewer tubes than number of ports, insert

unopened sorbent tubes in the empty ports to seal them.

Screw

Figure 5 -

Cut-away of Tri/Quad Low

Flow Holder

cont’d