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Laminar Flow Station airflow diagram
Portble Laminar Flow Station

Laminar Flow Station airflow diagram color key

Laminar Flow Station

This positive-pressure configuration allows filtration of particles to ensure a uniform, contamination-free flow of air to the work surface. It thus provides a mini-cleanroom environment for particle-sensitive operations in the forensic industry.

This positive-pressure configuration allows filtration of particles to ensure a uniform, contamination-free flow of air to the work surface. It thus provides a mini-cleanroom environment for particle-sensitive operations in microelectronics, biotech, and many other industries. To construct your system, select a stainless steel blower module and filter housing. Note that two of each housing are required for twin (72"W or 90"W) stations.

Select the appropriate blower for your application: a 740 CFM or a 1200 CFM variable speed impeller. The higher-output blower is recommended for applications with multiple filters or that require a high-level air flow. Finally, pick the filter(s) that provide the cleanliness rating you require (refer to the efficiency ratings below). The performance illustration provides specific information on the air flow each filter provides when used with the Terra blower module. Unless otherwise specified, blower/filter modules come installed as indicated in the illustration, with the higher-rated filter positioned downstream in the filter housing.

Specifications
Blowers:
1) 740 CFM, 1560 RPM variable speed impeller
2) 1200 CFM, 1675 RPM variable speed impeller
Note: Both blowers rated at no static pressure. See performance charts below for performance under filter load.
Filter Housing: 28.75"W x 13.75"D x 7.50"H
Blower Housing: 21.62"W x 13.50"D x 7.25"H. Includes power switch, speed control and power cord receptacle (cord not included)
Prefilter: 12" x 12" fiberglass prefilter (included)
Average flow diagram Average flow diagram color key
Average flow: 800 CFM
Data above reflect performace with 1200 CFM blower.
Laminar Flow Station

To Order:
1. Select the hood of the appropriate size and material

Laminar Flow Station dimension illustration
Universal Hood Nominal Dimensions
Type A B C D E F G H
Small Single 16 24 4 33 36 17 23 5
Large Single 19 28 8.5 42.5 45 21 27 8.5
Small Twin 16 24 4 66 72 17 23 5
Large Twin 19 28 8.5 85 90 21 27 8.5

Polypropylene Hood

Polypropylene Hood (shown without bottom)

2. Select the blower and filter modules
Type Universal Hoods (includes access shield of materials indicated in parentheses)
See
Dimensions
above
Polypropylene
(Nondissipative PVC shield)
Static Dissipative PVC
(Dissipative PVC shield)
Nondissipative PVC
(Nondissipative PVC shield)
Cat. # $/Each Cat. # $/Each Cat. # $/Each
Small Single 7900-12A Login 2241-03A Login 7900-14A Login
Large Single 7900-13A Login 2241-04A Login 7900-15A Login
Small Twin 7900-06A Login 2242-00A Login 7900-08A Login
Large Twin 7900-07A Login 2242-01A Login 7900-09A Login
See
Dimensions
above
304 Stainless steel
(Dissipative PVC shield)
Acrylic*
(Acrylic shield)
Tempered Glass
(Dissipative PVC shield)
Cat. # $/Each Cat. # $/Each Cat. # $/Each
Small Single 2900-16A Login 1715-09A Login 2900-14A Login
Large Single 2900-17A Login 1715-10A Login 2900-15A Login
Small Twin 2900-06A Login 1715-06A Login 2900-12A Login
Large Twin 2900-07A Login 1715-08A Login 2900-13A Login
*Acrylic is damaged by alcohol and other cleaning agents.
2. Select the blower and filter modules
Blower Module* Filter Housing* Filters**
Blower
Type
(@ 0" static
pressure)
Electrical Stainless Steel Stainless Steel HEPA ULPA Prefilter
Cat. # $/Each Cat. # $/Each Cat. # $/Each Cat. # $/Each Cat. # $/Each
740 CFM 115VAC/60Hz 1715-50 Login 1715-52 Login 1681-02 Login 1681-10 Login 9202-50 Login
230VAC/50Hz 1715-50-220 Login
1200 CFM 115VAC/60Hz 1715-51 Login
230VAC/50Hz 1715-51-220 Login
* Dimensions: 22.75W x 13.50"D x 7.25"H (Blower Module), 30"W x 13.75" x 7.75"H (Filter Housing).
** HEPA (High-Efficiency Particulate Air) Filters rated 99.99% efficient @ 0.3 µm particles;
ULPA (Ultra-Low Penetration Air) Filters rated 99.999% efficient @ 0.12 µm particles.
Note: Twin stations require two blower modules, two filter housings, and two filter sets
3. Select a Stand
Vibration-isolated stand
Vibration-isolated stand with free-standing hood frame isolates vibrations caused by the hood blower
Non-isolated (one-piece) stand
Non-isolated (one-piece) stand

The Universal Hood's bottomless design allows it to be placed on virtually any work surface. For optimal performance, however, Terra recommends one of these hood stands, available in two designs (see descriptions below).

Both designs feature raised lips to hold the hood securely in place. All frames (whether isolated or not) are made of rigid square tubing with a white epoxy finish, and include stainless steel scuff sleeves to prevent scuffing along the bottom leg support. The work surface stands 32" above the floor. Be sure to select the size (large or small, single or twin) to match your hood.

Choose the work surface to suit your application (see ordering table). Subsurface polypropylene plenum chambers are available for perforated benchtops on a custom basis. These plenums (designed according to your specific requirements) serve two important functions: during chemical processing, they collect hazardous spills; and during laminar flow operations, they eliminate air-flow deflection towards the operator (an important concern when hazardous fumes may be present).

Vibration-Isolated Stands feature a two-part work surface and hood frame to isolate the work area from blower vibration, which can interfere with microscope operation.

Vibration-Isolated Stands
(Select Hood Frame and desired surface. All stands and tables include leveling feet)
For
Hood Type
Bench Top
Dimensions
W" x D"
Hood Frame
(Epoxy-finished Steel)
Cat. # $/Each
Small Single 35.25 x 23.25 1682-01 Login
Large Single 44.25 x 27.25 1715-02 Login
Small Twin 71.25 x 23.25 1715-11 Login
Large Twin 89.25 x 27.25 1715-12 Login
Vibration-Isolated Stands (Select Hood Frame and desired surface. All stands and tables include leveling feet)
For
Hood Type
Bench Top
Dimensions
Vibration-Isolated Work Surface
Nonconductive
Laminated
Conductive
Laminate
Polypropylene 304 Stainless
Steel-Solid
304 Stainless
Steel-Perforated
W" x D" Cat. # $/Each Cat. # $/Each Cat. # $/Each Cat. # $/Each Cat. # $/Each
Small Single 34.25 x 23 1682-02 Login 1682-03 Login 1715-17 Login 1715-21 Login 1715-25 Login
Large Single 44.25 x 27 1715-03 Login 1715-07 Login 1715-18 Login 1715-22 Login 1715-26 Login
Small Twin 58.25 x 23 1715-13 Login 1715-15 Login 1715-19 Login 1715-23 Login 1715-27 Login
Large Twin 88.25 x 27 1715-14 Login 1715-16 Login 1715-20 Login 1715-24 Login 1715-28 Login

Non-Isolated Stands combine the work surface and hood frame in a single unit.
Non-Isolated (One piece Hood Frame and work surface. All stands include leveling feet)
For
Hood Type
Bench Top
Dimensions
Nonconductive
Laminated
Conductive
Laminate
Polypropylene 304 Stainless
Steel-Solid
304 Stainless
Steel-Perforated
W" x D" Cat. # $/Each Cat. # $/Each Cat. # $/Each Cat. # $/Each Cat. # $/Each
Small Single 35.25 x 23.25 1682-16 Login 1682-12 Login 1715-29 Login 1715-33 Login 1715-37 Login
Large Single 44.25 x 27.25 1682-17 Login 1682-13 Login 1715-30 Login 1715-34 Login 1715-38 Login
Small Twin 71.25 x 23.25 1682-18 Login 1682-14 Login 1715-31 Login 1715-35 Login 1715-39 Login
Large Twin 89.25 x 27.25 1682-19 Login 1682-15 Login 1715-32 Login 1715-36 Login 1715-40 Login
 

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