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Humanscale Diffrient Smart Chair

SKU: Diffrient-Smart
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Price: $1,046.71
$819.28

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Humanscale Diffrient Smart Chair


Utilizing Humanscale’s Form-Sensing Mesh Technology, Diffrient Smart’s backrest has a tri-panel fit much like a custom-tailored shirt, providing exceptional, instant lumbar support. Featuring Humanscale’s patented weight-sensitive, mechanism-free recline, Smart automatically adjusts to the body weight of each sitter to provide perfect recline support. Further maximizing the ergonomic range of motion, Diffrient Smart’s high-performance armrests allow users to move their arms backward and forward, as well as inward and outward.

Features

Distinctive clean lines create a timeless aesthetic that reflects today’s designed environments
Form-Sensing Mesh Technology takes mesh support to the next level
Non-stretch, tri-panel backrest provides instant, extraordinary comfort and lumbar support
Automatic weight-sensitive recline ergonomically accommodates users without the clumsy interference of external devices or mechanisms for ultimate ease of use
Pivoting backrest adjusts to the changing needs of the spine
Shaped seat cushions are carefully sculpted to fit the body’s contours to enhance ergonomic comfort
Size-adjustable design fits more than 95% of the population
Optional, high-performance armrests move forward and backward, as well as inward and outward
Light weight allows for easy mobility
Fewer parts and manufacturing processes make the chair more sustainable
Content—consisting predominantly of aluminum, with some steel and plastic components— makes the chair more durable and long-lasting

Specifications

Chair Height

Standard 38.5" - 43.5"
Low Cylinder: 39.5" - 44.75"
High Cylinder: 43" - 51"

Armrest Height

Fixed Arms: 8.75"
Adjustable Arms: 6" - 10.5"

Seat Height

Standard: 16" - 21"
Low Cylinder: 15.25" - 19"
Tall Cylinder: 17" - 22.25"
High Cylinder with Footring: 20.5" - 28.5"

Chair measurements

Canadian Humanscale Catalogue

Sustainability

We work hard to ensure that our environmental philosophy is reflected in each product we create. With our Design for Environment protocol, our designers and engineers examine the environmental impact of every choice made throughout the design process—from initial concept through final production. We invite you to read more.
A selection of sustainability highlights for the Diffrient Smart:
Recycled Content: 39% post-consumer, 23% pre-consumer
Weighs as little as 40 pounds, minimizing its carbon footprint in shipping
Made of only 90 parts—fewer parts makes it is easier to disassemble and recycle
Modular cushions for easy replacement
Learn more about how we work to extend the life of our products through both design and engineering so they won’t need to be replaced often
Designed for easy disassembly with clear recycling instructions
Ships in packaging that contains recycled content or blanket-wrapped, when feasible
GREENGUARD Indoor Air Quality and GREENGUARD Gold Certified.
ANSI/BIFMA level® 2 certified
Close the Loop program ensures that every product ends its useful life with a minimal environmental impact

Textiles

Monofilament Strip
Monofilament Strip

Black (M10)
Carbon (M11)
Platinum (M14)
Green (M41)
Atlantic (M51)
Amber (M81)

Silver Check
Silver Check

Alloy (c12)
Topaz (C32)

Dash
Dash

Textile Code: C
This brilliant weave of monofilament strands and silver-coated yarns offers resiliency and durability. The award-winning mesh textile was designed to provide optimal ergonomic support and comfort by melding strength and flexibility. Like Humanscale's other meshes, Silver Check has a low abrasion factor and is extremely gentle on clothing.
Technical Information
Content:74% Polyester, 26% Nylon
Width: 54”
Weave Repeat: 1/4" wide x 1/4" height
Finish: Water repellent
Brush Pill: Class 5, ASTM D-3511
Abrasion: 90,000 double rubs, ASTM D-4157
#10 cotton duck, Wyzenbeek
Colorfastness to Light: Class 4.5, 40 hours; AATCC Test Method 16, Option 3
Crocking: Dry: Class 5, Wet: Class 5, AATCC Method 8
Flammability: California technical bulletin 117, section E; NFPA 260 Cover Fabric, Class 1

Plantinum (A14)
Zinc (A19)

Pinstripe
Pinstripe

Mesh Code: N
Created by Elizabeth Whelan Design, Pinstripe is a lightweight mesh, that still manages to provide the strength and support of a much heavier mesh, by using two different monofilament stretch yarns to provide firmness and excellent recovery of the fabric. Only the pinstripe yarns take the dye, and the monofilament yarns are grey instead of black, giving a more neutral background to the pattern and allowing light to pass through the fabric.
Technical Information
Content: 82% Polyester, 18% Nylon
Width: 48”
Weave Repeat: 1/4" Vertical, no Horizon repeat
Finish: Stain Resistant
Brush Pill: Class 5, ASTM D-3511
Abrasion: 150,000 double rubs, ASTM D 4157, #10 Cotton Duck, Wyzenbeek
Colorfastness to Light: Grade 4.3, 40 hours AATCC, Test Method 16E
Crocking: Dry: Grade 4, Wet: Grade 5, AATCC Method 8
Breaking Force (grab test): Weft: 292lbs, Warp: 280lbs, ASTM D 5034
Seam Slippage: Weft: 75lbs, Warp: 39lbs, ASTM D 4034
Flammability: California technical bulletin 117, section E

Black (N10)
Cadmium (N34)
Citron (N43)
Crimson (N74)
Cyan (N58)
Silver (N02)
White (N01)

Catena
Catena

Black (J10)
Poppy Seed (J1A)
Caraway (J1B)
Bayberry (J35)
Comflower (J50)

Vellum
Vellum

Textile Grade: 1
Textile Code: V
Constructed of a plain weave using a blend of nylon, Cordura® and elastic yarn, this textile offers a pleasing texture and exceptional durability. Because of the Cordura® content, this four-way stretch woven textile performs to the rigors of the most demanding contract environments. The color palette includes brights, classics and neutrals. 
Recommended Cleaning Instructions
For liquid-based stains that penetrate the textile, remove the stain as quickly as possible to minimize the likelihood of permanent staining. For more substance-based stains that sit on top of the fabric, scrape off the excess substance with a knife or coin immediately. Always use water-soluble solvents such as dishwashing detergents to clean. Vacuum the textile on a weekly basis to extend the life of the material and to help identify any stains that must be removed.
Technical Information
Content:91% Nylon and Cordura® blend, 9% Elastic
Width: 50” 
Weave Repeat: None 
Finish: Stain and water repellent 
Brush Pill: Class 5, ASTM D-3511 
Abrasion: 150,000 double rubs, ASTM D 3597 
#10 cotton duck, Wyzenbeek 
Colorfastness to Light: Class 4, 40 hours; AATCC Test Method 16E 
Crocking: Dry: Class 5, Wet: Grade 4.5, AATCC Method 8 
Flammability: California technical bulletin 117, section E; NFPA 260 Cover Fabric, Class 1

Black (V101)
Graphic (V102)
Ash (V106)
Light Gray (V114)
Seal (V202)
Mahogany (V212)
Moss (V404)
Grass (V407)
Greenwood (V414)
Nanvy (V507)
Pomegranate (V713) 

Lotus
Lotus

Textile Grade: 1
Textile Code: K 
Aptly named after the plant known for its healing properties, beauty, and cleanliness, Lotus is one of the latest creations from award-winning designer Elizabeth Whelan. Water repellant and easy to clean, it is an ideal textile for the healthcare and hospitality environments. Its polyurethane finish with nylon backing boasts a soft texture that is pleasant to the touch while offering exceptional durability, and its four-way stretch design provides the flexibility to seamlessly adapt to Humanscale’s unique ergonomically designed seat cushions. Lotus meets and exceeds all performance requirements for task seating applications, including all heavy-duty contract and healthcare tests.  
Technical Information 
Content:100% Polyurethane face, Nylon backing 
Width: 54” useable 
Weave Repeat: None 
Finish: Antibacterial/antimicrobial finish, AATCC Method 100 
Stain and water resistant finish 
Abrasion: 350,000 double rubs, ASTM 4157, #10 cotton duck, Wyzenbeek 
150,000 double rubs, ASTM 4157-02, wire mesh, Wyzenbeek 
Colorfastness to Light: Grade 4.5, 40 hours AATCC, Test Method 16, Option 3 
Crocking: Dry: Grade 4.5, Wet: Grade 4.5, AATCC Method 8 
Breaking Force (Grab Text): Weft: 563.5 lbs., Warp: 644.3 lbs., ASTM D 5034 
Elongation: Weft: 149.9%, Warp: 100.1%, UPH 107 
Flammability: California technical bulletin 117, section E 
NFPA 260 Cover Fabric, Class 1 
Stain Release Test: Grade 5, AATCC Test Method 130 
Colorfastness to Solvent Spotting: AATTCC 157 
Grade 4, Perchloroethylene 
Grade 5, Soap & Water 
Grade 5, Carbona Upholstery Cleaner 
Grade 5, Forumula 409 
Grade 5, 50% Alcohol 
Grade 4.5, 10% Bleach 
Grade 5, 3M HB Quatrany Cleaner 
Grade 5, Sporz-Klenz 
10-Cycle Colorfastness Test: 
Grade 4.5, 3M HB Quatrany Cleaner 
Grade 4.5, Sporz-Klenz 
Antibacterial Finish: Staphylococcus aureus ATCC 6538, 99.68% inhibition of growth 
Klebsiella pneumoniae ATCC 4352, 99.86% inhibition of growth 
Lotus is Electrostatic Discharge (ESD) compliant and meets ANSI/ESD-STM-12.1-2006 requirements. 

Black (K101) 
White (K128) 
Shales (K158) 
Hematite (K182) 
Walnut (K281) 
Umber (K2C4) 
Ochre (K302) 
Verant (K459) 
Navy (K507) 
Plum (K603) 
Crocus (K608) 
Eggplant (K624) 
Earth Red (K757) 
Luck Red (K758) 

Squiggle Horizontal
Squiggle Horizontal

Textile Grade: 0 
Textile Code: S (Vertical) or G (Horizontal) 
Created by award-winning designer Lori Weitzner, Squiggle was inspired by the movement of ripples across a still body of water. 
Squiggle features an innovative weave structure that creates a modern, organic wave pattern. The design comes in nine rich colorways, and can be applied either horizontally or vertically to Humanscale seating. 
Recommended Cleaning Instructions 
To clean Squiggle, apply a water-based shampoo or foam upholstery cleaner and take care not to saturate the textile with water. To maintain the integrity of the fabric, an environmentally friendly cleaner like Simple Green Carpet & Upholstery Cleaner is preferred. 
Technical Information 
Content: 100% Pre-Consumer Recycled Polyester 
Weight: 9.43 oz/ly 
Width: 54” useable 
Weave Repeat: 4.1” vertical, 7.14” horizontal 
PPI: 25.4 
EPI: 86 
Seam Slippage: Weft: 87.4 lbs., Warp: 76.3 lbs., ASTM D 4034 
Breaking Force (Grab Test): Weft: 193 lbs., Warp: 165 lbs., ASTM D 5034 
Brush Pill: Class 4.5, ASTM D 3511 
Abrasion: 150,000 double rubs, ASTM D 4157, #10 cotton duck, Wyzenbeek 
Colorfastness to Light: Class 4.5, 40 hours AATCC Test Method 16, Option 3 
Crocking: Dry: Grade 4.5-5, Wet: Grade 4.5-5 AATCC Test Method 8 
Flammability: California technical bulletin 117, section E 
NFPA 260 Cover Fabric, Class 1 

Ash (S106) 
Choclate (S208) 
Sand (S262) 
Expresso (S275) 
Navy (S507)

Wave
Wave

Textile Grade: 1 
Textile Code: W 
Developed initially for sportwear, Wave responds to the unique form and production requirements of Humanscale seating. This four-way stretch fabric exceeds all contract interior testing requirements for heavy-duty upholstery. The colors of Wave are taken from the phenomenal hues found in nature. 
Recommended Cleaning Instructions 
For liquid-based stains that penetrate the textile, remove the stain as quickly as possible to minimize the likelihood of permanent staining. For more substance-based stains that sit on top of the fabric, scrape off the excess substance with a knife or coin immediately. Always use water-soluble solvents such as dishwashing detergents to clean. Vacuum the textile on a weekly basis to extend the life of the material and to help identify any stains that must be removed. 
Technical Information 
Content:86% Nylon, 14% Elastic 
Width: 61” 
Weave Repeat: None 
Finish: Stain and water repellent 
Brush Pill: Class 4, ASTM D-3511 
Abrasion: 150,000 double rubs, ASTM D 4157 
#10 cotton duck, Wyzenbeek 
Colorfastness to Light: Class 5, 40 hours; AATCC Test Method 16E 
Crocking: Dry: Class 5, Wet: Class 4.5, AATCC Method 16E 
Flammability: California technical bulletin 117, section E; NFPA 260 Cover Fabric, Class 1 

Black (W101) 
Graphic (W102) 
Smoke (W104) 
Dark Brown (W201) 
Rattan (W213) 
Loden (W402) 
Sage (W415) 
Blue (W502) 
Navy (W507) 
Ultraviolet (W601) 
Poppy (W714) 
Cayenne (W803)

Bridget Stripe Vertical

Bridget-Stripe

Textile Grade: 2 
Textile Code: B (Vertical) or H (Horizontal) 
Composed primarily of renewable merino wool, Bridget Stripe offers a five-color, 50-stripe pattern with a shifting color sequence that creates an undisrupted movement across the surface of the fabric. Boasting exceptional durability for a wool textile, Bridget Stripe may be applied either horizontally or vertically to Humanscale seating. 
Recommended Cleaning Instructions 
For liquid-based stains that penetrate the textile, remove the stain as quickly as possible to minimize the likelihood of permanent staining. For more substance-based stains that sit on top of the fabric, scrape off the excess substance with a knife or coin immediately. Always use water-soluble solvents such as dishwashing detergents to clean. Vacuum the textile on a weekly basis to extend the life of the material and to help identify any stains that must be removed. 
Technical Information 
Content:78% Wool, 13% Polyester, 9% Nylon 
Width: 55” 
Weave Repeat: 1.7" Horizontal 
Finish: Soil and stain repellent 
Brush Pill: Class 5, ASTM D-4970 
Abrasion: 150,000 double rubs, ASTM D 4157 
#10 cotton duck, Wyzenbeek 
75,000, Martindale 
Colorfastness to Light: Class 4.5, 40 hours; AATCC Test Method 16 
Crocking: Dry: Grade 4.5-5, Wet: Grade 4.5, AATCC Method 8 
Flammability: California technical bulletin 117, section E; NFPA 260 Cover Fabric, Class 1 

Smoke (B104) 
Kohl (B266) 

Bridget Stripe Horizontal

Textile Grade: 2 
Textile Code: B (Vertical) or H (Horizontal) 
Composed primarily of renewable merino wool, Bridget Stripe offers a five-color, 50-stripe pattern with a shifting color sequence that creates an undisrupted movement across the surface of the fabric. Boasting exceptional durability for a wool textile, Bridget Stripe may be applied either horizontally or vertically to Humanscale seating. 
Recommended Cleaning Instructions 
For liquid-based stains that penetrate the textile, remove the stain as quickly as possible to minimize the likelihood of permanent staining. For more substance-based stains that sit on top of the fabric, scrape off the excess substance with a knife or coin immediately. Always use water-soluble solvents such as dishwashing detergents to clean. Vacuum the textile on a weekly basis to extend the life of the material and to help identify any stains that must be removed. 
Technical Information 
Content:78% Wool, 13% Polyester, 9% Nylon 
Width: 55” 
Weave Repeat: 1.7" Horizontal 
Finish: Soil and stain repellent 
Brush Pill: Class 5, ASTM D-4970 
Abrasion: 150,000 double rubs, ASTM D 4157 
#10 cotton duck, Wyzenbeek 
75,000, Martindale 
Colorfastness to Light: Class 4.5, 40 hours; AATCC Test Method 16 
Crocking: Dry: Grade 4.5-5, Wet: Grade 4.5, AATCC Method 8 
Flammability: California technical bulletin 117, section E; NFPA 260 Cover Fabric, Class 1 

Smoke (H104) 
Kohl (H266) 

Ginkgo
Ginkgo

Textile Grade: 2 
Textile Code: F 
Created by Elizabeth Whelan Design, Ginkgo reflects the delicate parallel veins of the Ginkgo biloba tree leaves. It is composed of 90% wool, a renewable fiber that offers durability, elegance and flexibility. Available in a variety of vibrant and saturated colors, Ginkgo extends the breadth of Humanscale's seating color line. Ginkgo's exceptional performance on contract textile tests and subtle sophistication will satisfy any task seating application.
Recommended Cleaning Instructions 
For liquid-based stains that penetrate the textile, remove the stain as quickly as possible to minimize the likelihood of permanent staining. For more substance-based stains that sit on top of the fabric, scrape off the excess substance with a knife or coin immediately. Always use water-soluble solvents such as dishwashing detergents to clean. Vacuum the textile on a weekly basis to extend the life of the material and to help identify any stains that must be removed. 
Technical Information
Content: 90% Wool, 10% Nylon 
Width: 51” 
Weave Repeat: 1/8" Vertical, 1/8" Horizontal 
Finish: Soil and stain repellent 
Brush Pill: Class 4-5, Martindale IWS 196 Class 4, ASTM D-3511 
Abrasion: 103,300 cycles, Martindale AS 2001.2.25 
Colorfastness to Light: Grade 5, 40 hours AATCC, Test Method 16, Option 3 
CrockingDry: Grade 4.5, Wet: Grade 4.5, AATCC Method 8 
Flammability: California technical bulletin 117, section E; NFPA 260 Cover Fabric, Class 1 

Black (F101) 
Charcoal (F197) 
Walnut (F281) 
Storm (F556) 
Navy (F507) 
Wheat (F315) 
Green (F463) 
Horizon (F568) 
Harvest Orange (F816) 

Sensuede
Sensuede

Textile Grade: 3 
Textile Code: D 
Offering style and performance, Sensuede was developed to be the best and most luxurious engineered suede available. The silky feel is the result of recycled microfibers that are breathable, extra-strong and resitant to most stains and wrinkles. 
Recommended Cleaning Instructions 
For liquid-based stains that penetrate the textile, blot to remove excess liquid and remove the stain with a cloth soaked in warm, sudsy water. Use a dry cloth to absorb excess water. For more substance-based stains that sit on top of the fabric, scrape off the excess substance with a knife or coin immediately and remove with damp cloth.To restore Sensuede's natural sheen and luster, brush the fabric when dry with a suede brush. 
Technical Information 
Content:88% Polyester and 12% Polyurethane (more than 50% recycled polyester microfibers) 
Width: 56” 
Weave Repeat: None 
Finish: Stain repellent 
Brush Pill: Class 5, ASTM D-3511 
Abrasion: 200,000 double rubs, ASTM D-4157 
#10 cotton duck, Wyzenbeek 
Colorfastness to Light: Class 4, 40 hours; AATCC Test Method 16E 
CrockingDry: Grade 4.5, Wet: Grade 4, AATCC Method 8 
Flammability: California technical bulletin 117, section E; NFPA 260 Cover Fabric, Class 1

Ebony (D111) 
Pewter (D115) 
Chocolate (D208) 
Olive (D406) 
Pear (D411) 
Persian (D517) 
Oxblood (D712) 

Squiggle/Vertical
Squiggle-Vertical

Textile Grade: 0
Textile Code: S (Vertical) or G (Horizontal)
Created by award-winning designer Lori Weitzner, Squiggle was inspired by the movement of ripples across a still body of water.
Squiggle features an innovative weave structure that creates a modern, organic wave pattern. The design comes in nine rich colorways, and can be applied either horizontally or vertically to Humanscale seating.
Recommended Cleaning Instructions
To clean Squiggle, apply a water-based shampoo or foam upholstery cleaner and take care not to saturate the textile with water. To maintain the integrity of the fabric, an environmentally friendly cleaner like Simple Green Carpet & Upholstery Cleaner is preferred.
Technical Information
Content: 100% Pre-Consumer Recycled Polyester
Weight: 9.43 oz/ly
Width: 54” useable
Weave Repeat: 4.1” vertical, 7.14” horizontal
PPI: 25.4
EPI: 86
Seam Slippage: Weft: 87.4 lbs., Warp: 76.3 lbs., ASTM D 4034
Breaking Force (Grab Test): Weft: 193 lbs., Warp: 165 lbs., ASTM D 5034
Brush Pill: Class 4.5, ASTM D 3511
Abrasion: 150,000 double rubs, ASTM D 4157, #10 cotton duck, Wyzenbeek
Colorfastness to Light: Class 4.5, 40 hours AATCC Test Method 16, Option 3
Crocking: Dry: Grade 4.5-5, Wet: Grade 4.5-5 AATCC Test Method 8
Flammability: California technical bulletin 117, section E
NFPA 260 Cover Fabric, Class 1 

Ash (S106)
Chocolate (S208)
Sand (S262)
Espresso (S275)
Navy (S507)

Finishes

Finishes

White Chair
   Frame: White
   Amrpads: Gray
   Base caps: Brushed stainless steel
Black Chair
   Frame: Black
   Amrpads: Black
   Base caps: Black or Optional Brushed
Gray Chair
   Frame: Gray
   Amrpads: Gray
   Base caps: Gray or Optional Brushed

Instructions

Adjusting the Diffrient World Chair
So advanced, it's simple.
Recline Tension
The Diffrient World chair features automatic recline resistance that adjusts to your body weight. To make it work, all you have to do is sit.
Backrest/Lumbar Support
The Diffrient World chair’s Form-Sensing Mesh Technology provides perfect support while automatically adjusting itself to your unique shape. To properly fit the backrest/lumbar support to your body, simply sit back and let Diffrient World do the rest.
Seat Height
Depress the button under the right side of the seat frame. Position the chair to a comfortable height with your thighs parallel to the floor and your feet fully supported by the floor or a footrest. Release the button.
Seat Depth
Depress the button under the left side of the seat frame. With your back fully against the backrest, slide the seat to a position that provides 2 to 4 inches of clearance between the front of the seat and the backs of your knees. Release the button.
Adjustable Arms (Optional)
Squeeze the trigger on the underside of each armrest, reposition to the desired height and release.

User Instructions

Diffrient World Instructions (Interactive)
Seating Parts and Repair Manual (PDF)

FAQ

1. Can the Diffrient World chair be ordered with adjustable arms?
Yes, the Diffrient World chair currently comes with fixed arms, adjustable arms, and an armless model.
2. Why is non-stretch mesh preferable to stretchy mesh? Wouldn't stretchy mesh be more comfortable?
A single panel of stretchy mesh pulled tight around a frame cannot be contoured to the shape of the human back, and therefore cannot provide adequate lumbar support. This leads to discomfort over time. Non-stretch mesh displaces instead of stretches, and provides support for users of all sizes.
3. Are the mesh textiles for the Diffrient World chair gentle on clothing?
Each of our mesh textiles was specifically designed to be gentle on your clothes. Unique to our industry, Humanscale performs a reverse Wyzenbeek test on all of our mesh textiles to ensure that they will not damage clothing. We look at how our mesh abrades three different clothing textiles compared to a standard #10 cotton duck as the abradent. These results show that our mesh textiles are far gentler on your clothing than cotton duck.
4. I would like to test a Diffrient World chair before I purchase one. Where can I go to see the chair?
Call us 1-877-724-4922.
5. Can a mesh-backed chair provide adequate lumbar support?
Like its mesh-backed predecessor, Liberty, the Diffrient World chair uses Form-Sensing Mesh Technology to provide perfect lumbar support for everyone automatically - without the need for manual adjustments or external lumbar devices. With Diffrient World, three panels of non-stretch mesh are sewn together to create a contoured shape optimized for the human back, creating ultimate body-hugging support.
6. Why are there no levers or controls under the seat of the Diffrient World chair?
The Diffrient World chair is the ultimate user-friendly task chair. It features just two manual controls, for seat height and seat depth. All other controls are intuitive, so there is no need for levers and other controls under the seat.

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