Chapter 2: Prerequisites
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6
Exhaust and Blower Requirements
The XPert Nano Enclosure uses an integral motorized impeller to draw room air
past the operator and through the enclosure. This contaminated air is then pushed
through the ULPA filter. The ULPA-filtered exhaust air is then forced out the top
of the enclosure.
The ULPA-filtered exhaust air can be recirculated into the laboratory or exhausted
outside with the addition of the Canopy Exhaust Connection and remote blower
listed in Chapter 7. Electrical connections are covered in Chapter 2 for this
configuration. Consult your local regulations or guidelines for ventilation of the
filtered exhaust in nanoparticle applications.
If external exhaust is required, data for the exhaust volume, noise pressure and
enclosure static pressure loss is listed for each filtered enclosure model at face
velocities of 60, 80, and 100 fpm. Weighing and handling nano materials is best done
with lower flow rates (60-70 fpm or 0.31-0.36 m/s).
Enclosure
Width and
Sash
Opening
Face Velocity
(fpm)
Exhaust
Volume
(CFM)
XPert Station
Initial Static
Pressure Loss
with HEPA
filter (in w.g.)
XPert
System
Noise
Pressure db
(A)
Xpert System
Max.
Equivalent
Resistance (Ft)
Xpert System
Max. External
Static Pressure
2'
9.4" Sash
60
80
100
85
115
145
.35"- .41"
.48" - .57"
.62" - .72"
48-53
50-56
53-58
400
200
80
.20"
.18"
.13"
3'
9.4" Sash
60
80
100
130
175
220
.37" - .43"
.53" - .62"
.68" - .79"
48-53
53-57
58-61
130
50
25
.15"
.11"
.08"
4'
9.4" Sash
60
80
100
175
235
295
.40" - .46"
.57" - .66"
.76" - .87".
49-54
58-61
62-66
100
50
25
.20"
.18"
.13"
5'
12" Sash
60
80
100
290
385
480
.38" - .46"
.55" - .67"
.72" - .85"
52-56
58-63
63-67
450
230
120
.22"
.20"
.15"
6'
12" Sash
60
80
100
350
465
580
.46" - .56"
.67" - .81"
.87" – 1.03"
55-57
61-63
67-69
300
150
70
.20"
.18"
.13"
Proper blower selection can be determined from these exhaust requirements and the
total system static pressure loss. For outside exhaust, the enclosure must be
connected to either a dedicated blower or a house exhaust system. Labconco offers
accessory remote blowers listed in Chapter 7. Contact Labconco for blower sizing
assistance.
If the enclosure is connected directly to a house exhaust system, an
adjustable damper (or valve) must be installed to control the airflow
properly. This is equally important when a house exhaust system is
controlling multiple filtered enclosures. See Chapter 7 for accessory
adjustable damper ordering information.
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