BioFit Seating

• A chair for every application—
• Ergonomic Upholstered Chairs
• Ergonomic Static-Control Chairs
• Ergonomic Static-Control Cleanroom Chairs
• Class 1, Class 10 and Class 100 Cleanroom Chair
• Adjustable Stools

• Modular components let you customize your seating to fit your needs
• Ergonomic features ensure worker comfort, minimize fatigue and chance of injury
• Industrial-grade materials and construction guarantee durability
• Models available for desk and bench height
• Select among wide range of colors and fabric types
• Backed by a 15-year warranty

Few elements of the workplace are as essential but as misunderstood as chairs.

Despite the importance of ergonomic designs, Federal Standard 209E cleanroom specifications, and static control, few chair manufacturers address these issues clearly and reliably in products with guaranteed performance.

Seating that Works Hard—In Nearly Any Environment Terra's BioFit line of chairs meets these and other workplace requirements with rugged, industrial-strength designs and a number of innovative features, including a wide range of nonshedding and static-control fabrics, hermetically sealed particle traps and truly ergonomic adjustment controls. Best of all, these chairs are offered in economical configurations that let you select the features you need for your particular application, whether a Class 10 cleanroom, a research laboratory or a stocking room.

Upholstered seats are made with a furniture-grade hardwood pan, assembled with screws and metal T-nuts for added durability. Each features an internal bumper guard, giving it excellent appearance and protecting the fabric and vinyl from abrasions that occur when the chair is bumped into desks and benches. Backs feature a protective plastic panel that wraps around the edges of the backrest to protect the upholstery from damage. The larger ergonomic backrests feature additional internal bumper guards that protect the fabric and vinyl from splitting.

Chairs with tubular bases have a heavy-duty inverted "U" shape that relieves stress from the weld and places it in the bend of the tubing for added strength, especially compared to "butt weld"-type constructions. Leg tubing itself is shaped to accept the caster directly, resulting in a much more durable design and eliminating the need for stem inserts that often wear out before the caster itself. Cast aluminum bases are also extremely strong. Their all-metal design eliminates plastic bases found in inferior chairs. All bases feature five legs on a standard basis.

Pneumatic cylinders are taper-fitted at the top and bottom to eliminate bolts, screws, rivets or other metal fasteners that can come loose and pose a safety threat. This design also makes it easy to assemble and disassemble chairs and, in many cases, even to change the seat height in the field simply by changing an adapter tube. The "Soft Touch" seat height adjustment control takes the aggravation out of seat control—no standing or stooping is necessary.

These features enable us to extend a 15-year warranty—among the best in the industry!—on all components except upholstery and casters, which are covered for five years.

Growing concern over worker safety and productivity has forced manufacturers to consider the many industrial implications of "ergonomics": the study of how laws of nature influence human performance in day-to-day work environments.

Better understanding of such repetitive stress disorders as carpal tunnel syndrome has led to more effective applications of ergonomics in the design of products like chairs that can significantly reduce the incidence of worker fatigue and injury. Increasingly stiff workers' compensation premiums and OSHA fines make this investment in worker health an economic imperative!

Second, this line of seating offers modular features that allow you to select seating that's exactly right for your applications. All chairs incorporate a full 3" of cushioning in both the seat and backrest, and make use of a protective plastic panel and body-conforming hinge assembly for enhanced comfort and durability. Designated "ergonomic" chairs use larger seats and backrests for additional support.

Grade 2 Vinyl Black Bone Blue Pebble

Grade 4 Breathable Nylon Black Indigo   Grey

Fabrics For Every Requirement

Grade 2 Vinyl is the standard material for Class 100 chairs.

Grade 4 Breathable Nylon looks, feels and upholsters like leather, but is 100% nylon made from fibers laid in a 3-dimensional matrix. This material breathes through billions of micro-pores that function as particle traps. It is suitable for Class 10 applications.Conductive Black Vinyl is our most conductive material (not recommended for cleanroom use).

Microcon Static-Dissipative Blue/Black Vinyl is a heavy-duty vinyl for use in ESD cleanroom applications.

Static-Dissipative Viscose/Wool, a high-quality ESD wool blend, is available in two colors and combines a high aesthetic appeal with static protection.

ESD Materials
Conductive Black Vinyl		Micron Black Static Dissipative Vinyl	Grey Static Dissipative Viscose/Wool		Blue Static Dissipative Viscose/Wool
		Micron Blue Static Dissipative Vinyl			Twilight

Fabric Specifications: General Material Standard Weight Abrasion Resistance Flammability Tests* Grade 2:50-gauge vinyl** 36 oz/linear yd. 400,000 cycles, VW seatbelt test Fed spec. CCC-A680A; Class 2 treatments (A1-B-C); Boston Fire Code; NY Port Authority; NFPA Code 701 Life Safety Code; FMVSS 302 FAA (FAR 25,853, Para B); Calif. Flammability Regulations (117-75, Sec. E) Grade 4: Nytek™ Nylon Fiber Matrix 6.7 oz/sq. yd. 100,000 + double rubs Wyzenbeck/wire screen Calif. Bulletin 117; UFAC Class 1 ASTM E-84 Class A rated Static-Dissipative weave; 60% viscose, 40% wool 19/20 oz/linear yd. (ASTM D-1175) 30,000 + double rubs, Wyzenbeck Calif. CS-191-53, Class I; Technical Bulletin 117; MVSS 302 * Results reported pursuant to above standards do not necessarily define hazards presented under actual fire conditions. ** Prefixx protective finish for stain resistance and easy cleaning.
Particle Data During 30 Minutes of Seat Compression Class 100 Chairs with Grade 2 Vinyl (Counts/Ft3 during compression) >0.1 Micron >0.3 Micron >0.5 Micron Sample 1 4 3 2 Sample 2 29 21 18 Sample 3 3 1 1 Particle Data During 30 Minutes of Seat Compression Class 10 Chairs with Grade 2 Vinyl (Counts/Ft3 during compression) >0.1 Micron >0.3 Micron >0.5 Micron Sample 1 9 7 6 Sample 2 4 3 2 Sample 3 6 2 1 Particle Data During 30 Minutes of Seat Compression Class 10 Chairs with Grade 4 Breathable Nylon (Counts/Ft3 during compression) >0.1 Micron >0.3 Micron >0.5 Micron Sample 1 90 0 0	Additional Grade 4 Breathable Nylon Specifications   Chemical Resistance Tests, designed to simulate regular use of the following disinfectants over long periods of time, showed no detrimental effects to the upholstery: Sodium Hypocholorite 5.25 pbw, inert ingredients 94.75 pbw Multicide; Biotrol, Inc. Biocide, Biotrol, Inc. Glutarex; 3M Banicide; Pascal Sporicidin Solution; Sporicidin International Sporicidin Spray; Sporicidin International Cidex-7; Johnson and Johnson Cetylcide; Cetylite Industries
Static Performance Test Data for Static Control Seating Conductive Black Vinyl Static Dissipative Vinyl Static Dissipative Wool/Viscose Conductive Nylon Decay (from 5000 volts to technical zero): 0.63 sec. 0.01 sec. 0.1 sec. 0.01 sec. Top Surface or Volume Resistivity: 2.6 x 102 Ohms/ sq. surface 5.3 x 106 Ohms/ sq. surface 2.7 x 108 Ohms- cm volume 5.0 x 105 Ohms/ sq. surface Average Component Resistance (to ground): 1.5 x 103 Ohms 4.7 x 107 Ohms 3.0 x 106 1.6 x 104 Ohms