BioFit Amherst AM-Series Cleanroom Chair
BioFit Amherst AM-Series Cleanroom Chair – Ergonomic ISO-Class Lab Seating
The Amherst AM-Series Ergonomic Cleanroom Chair is designed to enhance user performance in cleanroom environments. It features a spacious, saddle-shaped seat and a supportive backrest, both tailored to meet a range of environmental and budgetary needs. The components and materials used in this chair are specifically selected to comply with cleanroom protocols, making it an ideal solution for settings that require reliable, ergonomic seating while maintaining cleanliness and safety standards.
The backrest measures 18 inches wide and 19 inches high, equipped with lumbar support and a protective plastic panel. The seat is contoured and saddle-shaped, 21 inches wide, 19 inches deep, and 3 inches thick, with a waterfall front and an internal seat board bumper guard for enhanced comfort.
Controls include Task Control Soft Touch for pneumatic seat-height adjustment, a fixed rearward seat tilt of 3-1/2 degrees, and options for backrest tilt and height adjustment. The chair features a high-profile, Euro-style base with a T-shaped construction for added strength and ease of cleaning and comes with dual-wheel, non-marring polyurethane casters that resist rolling when unoccupied. Alternative options include 2-inch-high polyamide glides, with other caster styles also available. Metal parts are chrome-plated for durability and a sleek appearance, and the chair supports up to 350 pounds.
To find your ideal seat height, subtract 12 inches from your work surface height. Use that number as the mid-point of the seat height adjustment range you choose. This formula fits most workers, and BioFit's range of adjustment options accommodates the rest.
Selection Guide:
♦ S-Base, 23" diameter tubular steel base with a 21" diameter affixed footring: available in Low (18" to 22"), Medium (21" to 28"), or High (25" to 32") seat height
♦ A-Base, 25.6" diameter cast aluminum base: available in Low (17" to 22"), Medium (19" to 26"), or High (22" to 32") seat height
♦ W-Base, 28.7" diameter wide aluminum base: available in Low (17" to 22"), Medium (19" to 26"), or High (22" to 32") seat height
Selecting the Right Model:
♦ Work surface height: subtract 12 inches from your work surface height to find your ideal mid-point seat height, then choose the Low, Medium, or High range that includes it.
♦ Base style, the S-Base with footring suits users who like a place to rest their feet, while the A-Base and W-Base offer wider stability without a footring.
♦ Cleanroom compliance: this Series omits the composite R-Base option available on the standard AM-Series, since chrome-plated metal bases better suit cleanroom protocols.
Where Commonly Used:
♦ Semiconductor and Electronics Cleanrooms, chrome-plated construction and ISO-class materials support particulate control requirements.
♦ Biotechnology and Pharmaceutical Labs, the ergonomic seat and backrest support extended seated tasks in controlled environments.
♦ Medical Device Manufacturing: cleanroom-compliant seating supports contamination-controlled assembly and inspection.
♦ Multi-Shift Cleanroom Facilities: The range of seat height adjustments accommodates different workers across shifts.
CustomMHS carries the full line of BioFit chairs and stools. CustomMHS is an authorized nationwide BioFit distributor, and all purchases include the manufacturer's factory warranty.
![]() |
![]() |
![]() |
|
S-Base
23" diameter tubular steel base
21" diameter affixed footing |
A-Base
25.6" diameter cast
aluminum base |
W-Base
28.7" diameter
wide aluminum base |
Prices are shown by manufacturer model number.
Compare the exact same item across competitors - no extra searching.
| Model Number | Seat Height | Seat Adjustment | Base Style | Price 1-3 | View Model |
|
Low
|
18" to 22"
|
S-Base
|
$653.87
|
||
|
Low
|
17" to 22"
|
A-Base
|
$632.01
|
||
|
Low
|
17" to 22"
|
W-Base
|
$646.57
|
||
|
Medium
|
21" to 28"
|
S-Base
|
$669.69
|
||
|
Medium
|
19" to 26"
|
A-Base
|
$639.29
|
||
|
Medium
|
19" to 26"
|
W-Base
|
$655.10
|
||
|
High
|
25" to 32"
|
S-Base
|
$650.24
|
||
|
High
|
22" to 32"
|
A-Base
|
$646.57
|
||
|
High
|
22" to 32"
|
W-Base
|
$662.38
|

