Core Benefits
- Comfort that lasts a full shift — molded PU foam, a supportive backrest, and padded armrests reduce fatigue during long seated tasks.
- Static protection built in — ESD surface and system resistance of 10⁶–10⁹ ohms helps guard sensitive instruments and keeps you compliant.
- A fit for every bench and every user — a three-stage pneumatic rod adjusts from roughly 450 mm to 560 mm.
- Stable through heavy daily use — a reinforced electroplated steel chassis and chrome-plated five-star legs carry the load and last.
- Easy to move, clean, and maintain — smooth PU surface plus PA casters with a metal conductive chain for movement and static discharge.
Why Armrests Matter Here
On many lab seats, armrests are an afterthought. On the JH-LS038, there’s a reason to choose it.
When you sit for long stretches — reading instruments, running analyses, monitoring a process, or working close to the bench — unsupported arms and shoulders tire quickly. The padded, high-grade PP armrests carry that weight for you, so your shoulders stay relaxed, and your forearms stay steady during detailed work.
That’s the difference between a chair you tolerate and one that keeps you comfortable and precise, hour after hour. If your team’s tasks involve long periods of still, focused seated work, the armrests aren’t a bonus — they’re the point.
Who It’s For
The JH-LS038 suits work styles built around long, static, detail-heavy seated tasks:
- Long-duration bench work — analysis, sample prep, and detailed hands-on tasks that require you to stay seated for hours.
- Instrument monitoring stations — watching, reading, and recording, where comfort keeps attention steady.
- ESD-sensitive workstations — electronics assembly, testing, and any bench where static control protects components.
- Testing and inspection rooms — repetitive seated work that requires back and arm support.
- R&D desks — day-long sessions that need posture support plus static safety.
In short, anywhere staff sit longer than a stool comfortably allows and need arm and back support, as well as ESD protection.
Key Features
- One-piece molded PU foam seat (420 × 400 mm) — consistent cushioning that holds its shape through daily use.
- Adjustable backrest (380 × 260 mm) — supports posture and adapts to individual comfort.
- High-grade PP padded armrests — arm and shoulder support tuned for long seated tasks.
- ESD surface and system resistance (10⁶–10⁹ ohms) — static control for instrument protection (system resistance requires conductive wheels).
- Electroplated steel chassis with reinforcing ribs — high load capacity and long-term stability.
- Chrome-plated five-star legs (320 mm radius) — a wide, balanced, export-grade steel base.
- Three-stage pneumatic rod (approx. 450–560 mm) — free height adjustment across benches and users.
- PA casters with metal conductive chain — smooth movement and reliable static discharge (fixed foot cups optional).
Why Choose the JH-LS038
Features tell you what it has. Here’s why it’s the right buy:
- It’s made for long hours, not quick perches. The combination of molded foam, backrest, and armrests targets the fatigue that builds over a full shift — something a basic stool can’t address.
- It solves comfort and static safety at once. You don’t have to choose between an ESD chair and a comfortable one; the JH-LS038 delivers both in a single seat.
- It fits shared and mixed setups. Wide height range and adjustable back make it work for different users and bench heights without compromise.
- It’s built to keep performing. The reinforced chassis and five-star base withstand busy, everyday lab use over the long term.
Technical Specifications
| Specification | Detail |
|---|---|
| Model | JH-LS038 |
| Product | Ergonomic Lab Chair with Armrests |
| Chair Surface | One-piece molded PU foam, adjustable backrest, anti-slip |
| Seat Size | 420 x 400mm |
| Backrest Size | 380 x 260mm |
| Armrests | High-grade PP, padded |
| Color | Black |
| Chassis | Electroplated steel plate |
| Chassis Connector | Electroplated elastic steel plate, 60 mm width, 60 mm thickness, with reinforcing ribs, ergonomic design |
| Surface Resistance | 10⁶–10⁹ ohms |
| System Resistance | 10⁶–10⁹ ohms (conductive wheels required) |
| Lift Pneumatic Rod | Three-stage pneumatic rod, height range approx. 450mm–560mm |
| Pedal Ring | Outer ring of electroplated steel pipe (export grade), cross-shaped steel spray frame |
| Chair Legs | Chrome-plated five-star legs, export-grade steel, radius 320mm |
| Casters | High-strength wear-resistant PA casters with metal conductive chain (various casters or fixed foot cups optional) |
Caster or foot-cup choice, ESD configuration, and height setup can be confirmed for your project. Share your seating needs, and we’ll advise on the right configuration before you order.
Related Models — Which Chair Fits Your Bench?
The JH-LS038 is an upgraded version of the Quality Polyurethane Lab Chair (JH-LS027), redesigned to improve comfort and support. Here’s how to choose between the related models:
- JH-LS038 — Choose this when you need arm support plus ergonomic back support for long seated work, with built-in ESD protection.
- JH-LS017 — Choose this when a footrest matters more to you, to reduce leg fatigue during tall-bench or standing-height seated work.
- JH-LS027 — Choose this for a simpler PU lab chair when you don’t need the added armrest and comfort upgrades of the LS038.
If you’re deciding between these, tell us how long your team sits and whether you need armrests or a footrest, and we’ll point you to the right model.
FAQ
Is the JH-LS038 comfortable for long hours of sitting?
Yes — that’s exactly what it’s built for. The high-density, one-piece-molded PU foam provides consistent cushioning that holds its shape through daily use, so you feel less strain during a long shift. The backrest supports proper posture, and the padded armrests take pressure off your arms and shoulders, making a real difference during hours of focused bench work.
Does the JH-LS038 meet anti-static (ESD) requirements?
Yes. Surface and system resistance are held at 10⁶–10⁹ ohms, which meets standard anti-static lab requirements and helps protect precision instruments and sensitive electronics. To keep the full system in the ESD range, conductive wheels are required, and the casters include a metal conductive chain for reliable static discharge. If you have specific ESD standards to meet, share them, and we’ll confirm the right setup.
How does the height adjustment work?
The chair uses a three-stage pneumatic rod that adjusts seat height across roughly 450 mm to 560 mm. You can raise or lower it freely to match your workbench and your comfort, making it easy to accommodate different bench heights and users at shared stations.
What caster and foot options are available?
The standard chair comes with high-strength, wear-resistant PA casters fitted with a metal conductive chain for smooth movement and static discharge. If you’d prefer a stationary setup, fixed foot cups are available, and various caster types can be selected to match your flooring and workflow. Let us know your preference when you request a quote.
Which workplaces are the JH-LS038 best suited for?
It fits work styles built around long, static, detail-focused seated tasks — long-duration bench work, instrument monitoring stations, ESD-sensitive electronics workstations, testing and inspection rooms, and R&D desks. Anywhere staff sit for extended periods and need arm and back support, plus static protection, the JH-LS038 is a strong fit.
How does the JH-LS038 compare to the LS027 and LS017?
The JH-LS038 is an upgraded version of the JH-LS027, redesigned for better comfort and support, and it’s the pick when you want padded armrests plus ergonomic back support for long seated work. If a footrest to relieve leg fatigue is more important, the JH-LS017 is the better choice. If you want a simpler PU chair without the added armrest and comfort features, the JH-LS027 works well. Ask us if you’d like help choosing.
Is the chair stable and durable enough for daily lab use?
Yes. It’s built on a reinforced electroplated steel chassis with reinforcing ribs for high load capacity, and the chrome-plated five-star legs (320 mm radius, export-grade steel) give a wide, balanced base. Together, they withstand heavy daily use and deliver a long service life in busy lab settings.
Do you offer OEM/ODM and export support for the JH-LS038?
Yes. We manufacture the JH-LS038 in our own facility, so we can support OEM and ODM projects and adjust specifications, colors, and configurations to match your needs. We offer factory-direct pricing, volume discounts for distributors and lab builders, and reliable export support worldwide. Send us your quantities and specifications, and our team will follow up quickly.
Request a Quote
Outfitting a lab with comfortable, ESD-safe seating for long-hour work? Send us your required quantities, ESD requirements, caster or foot-cup preference, and preferred height configuration, and our team will prepare a tailored quotation for the JH-LS038. For larger seating projects, tell us how your stations are used and we’ll recommend the right setup and confirm lead time.
