Key Benefits
- Arm support where it counts — an integrated armrest steadies the forearms during precision and inspection work at tall benches, so hands stay controlled through repetitive tasks.
- Reaches elevated workstations — an export-grade gas pole adjusts from 630–830 mm with foot cups or 660–860 mm with wheels, covering high benches shorter chairs can’t.
- Genuine ESD protection — surface and system resistance of 10³–10⁹ ohms helps guard precision instruments and static-sensitive electronics.
- Roomy, supportive seating — a 440 × 410 mm conductive PU foam seat and 400 × 300 mm back give operators more room and back support for long sessions.
- A foot ring that makes tall seating usable — supports the legs at height, so long shifts at elevated benches stay comfortable.
Why Arm Support Changes the Job at Tall Benches
Most tall ESD chairs leave your arms hanging. That’s fine for a quick sit, but not for the work this chair is built for.
At an elevated bench, operators inspecting components, assembling small parts, or running repetitive detail tasks hold their arms up and forward for long stretches. Without support, the shoulders and forearms carry that load all shift — and fatigue doesn’t just tire the operator, it shows up as shaky hands, slower work, and more errors on precision tasks. The integrated armrest changes that. It gives the forearms a stable resting point, so the hands stay controlled and the work stays accurate late into the day.
That’s why the armrest isn’t a comfort extra on the JH-LS031 — it’s the reason to choose it. If your team does close, static-sensitive work at a high bench, arm support is what keeps that work steady. Everything else on this chair — the ESD foam, the tall reach, the foot ring — supports that same core job.
The Foot Ring Isn’t an Accessory — It’s Essential Here
On a standard-height chair, a foot ring is a nice-to-have. On the JH-LS031, it’s a core part of how the chair works.
At full height, the operator’s feet won’t reach the floor — that’s simply what happens on a chair built for tall benches. Without support, legs dangle, circulation suffers, and fatigue sets in fast. The electroplated steel pipe foot ring, with its cross-shaped coated frame, gives the legs a stable resting point at height. That’s the difference between a tall chair someone can sit in all day and one they can’t.
So when you look at the JH-LS031, don’t read the foot ring as an add-on. Combined with the armrest, it’s what makes elevated seated work genuinely sustainable across a full shift.
Key Features
- Conductive PU foam seat (440 × 410 mm) — a roomy, comfortable surface with anti-static performance built into the material.
- PU foam backrest (400 × 300 mm) — generous, supportive back comfort for long seated work.
- Integrated armrest — steadies the forearms during precision and inspection tasks, setting this chair apart from plain foam lab stools.
- ESD surface and system resistance (10³–10⁹ ohms) — static control for instrument and electronics protection (conductive casters or foot cups required).
- Tall height range — 630–830 mm with foot cups, or 660–860 mm with wheels, for elevated benches and standing-height stations.
- Electroplated steel pipe foot ring — cross-shaped coated frame; essential leg support at tall seat heights.
- Electroplated steel base with reinforced connector — elastic steel plate connector (60 mm wide, 6 mm thick) with reinforcing rib, built to ergonomic principles.
- Five-star aluminum alloy die-cast legs (320 mm diameter) — formed in one piece for a wide, balanced base at height.
- PA casters with metal conductive chain — smooth movement and reliable static discharge (various casters or fixed foot cups optional).
Who It’s For
The JH-LS031 is built for elevated, static-sensitive workstations where arm support keeps precision work steady:
- Electronics inspection stations — where operators hold and examine components for long stretches at raised benches.
- Precision assembly benches — close, detailed assembly that benefits from steady forearms and static control.
- Elevated ESD workstations — high work surfaces where a standard chair can’t reach and static protection is essential.
- Repetitive seated tasks — work that keeps the arms engaged, where forearm support reduces fatigue and error.
- Clean production and technical benches — static-sensitive lines where operators sit high and need a foot ring for support.
In short: anywhere the bench is tall, the work is static-sensitive, and the arms need support to stay accurate, the JH-LS031 is the right chair.
Technical Specifications
| Specification | Detail |
|---|---|
| Model | JH-LS031 |
| Product | ESD Lab Chair with Armrest & Back |
| Seat | Conductive PU foam, 440 x 410mm |
| Backrest | PU foam, 400 x 300mm, with armrest |
| Surface Resistance | 10³–10⁹ ohms |
| System Resistance | 10³–10⁹ ohms (conductive casters or foot cups required) |
| Base | Electroplating a steel plate |
| Base Connector | Elastic electroplated steel plate, 60mm width, 6mm thickness, with reinforced rib, ergonomic |
| Lift Gas Pole | Export-grade gas pole |
| Adjustable Height | 630–830mm (with foot cup), 660–860mm (with wheel) |
| Foot Ring | Electroplating steel pipe outer ring, cross-shaped coated frame |
| Chair Legs | Aluminum alloy die-cast five-star legs, one-piece forming, 320mm diameter |
| Casters | High-strength wear-resistant PA casters with a metal conductive chain (various casters or fixed foot cups optional) |
Bench height, ESD configuration, and caster or foot-cup choice can be confirmed for your project. Share your workstation height and whether operators need arm support, and we’ll advise on the right setup before you order.
Related Models — Which Lab Chair Fits Your Bench?
The chairs in this range answer different needs. The deciding factors are bench height, whether you need arm support, and whether seat size or full ergonomics leads. Here’s how to choose:
| Model | Best for | Key difference |
|---|---|---|
| JH-LS031 (this chair) | Elevated benches needing ESD seating with arm support | Tall range (up to 860 mm) plus an integrated armrest for precision and inspection work |
| JH-LS014 | Elevated benches needing practical ESD seating | Tall-bench chair without an armrest — a dependable standard option |
| JH-LS017 | Elevated benches needing the largest, most supportive ESD seat | Premium tier focused on seat size (larger seat and back), no armrest |
| JH-LS038 | Long, seated lab work at standard bench height | Standard-height full ergonomic chair with padded armrests, not built for tall benches |
In short: pick the LS031 when your bench is tall, and the work needs arm support; pick the LS014 for a practical tall-bench chair without armrests; pick the LS017 when you want the biggest, most supportive tall-bench seat; pick the LS038 for full ergonomic comfort at standard height. If you’re unsure, tell us your bench height and whether operators do precision or inspection work, and we’ll point you to the right model.
FAQ
What makes the JH-LS031 different from a standard tall ESD chair?
Arm support. Most tall ESD chairs leave the arms unsupported, which is fine for brief sitting but tiring for precision and inspection work at a high bench. The JH-LS031 adds an integrated armrest to a tall-range ESD chair, providing operators with a stable resting point for the forearms, along with static protection and a foot ring. It’s built for high-bench work where the hands need to stay steady and accurate through the day.
Why does the armrest matter so much for this chair?
Because at an elevated bench, operators hold their arms up and forward for long stretches during inspection, assembly, and repetitive detail work. Without support, the shoulders and forearms carry that load all shift — and fatigue shows up as shaky hands, slower work, and more errors. The armrest provides the forearms with a stable base, so the hands stay controlled and the precision work stays accurate. On the JH-LS031, it isn’t a comfort extra; it’s the core reason to choose this model.
Does the JH-LS031 meet anti-static (ESD) requirements?
Yes. Surface and system resistance are held at 10³–10⁹ ohms, which meets standard anti-static requirements and helps protect precision instruments and static-sensitive electronics. The seat uses conductive PU foam, so the ESD effect is built into the material rather than added on top. To keep the full system in the ESD range, conductive casters or foot cups are required, and the casters include a metal conductive chain for reliable static discharge.
Isn’t this a “leather chair”? The original listing says so.
The original site listed it as a “leather chair,” but the specification is a conductive PU foam seat. That distinction matters: conductive PU foam delivers genuine electrostatic discharge performance, which a plain leather seat wouldn’t. So you get real ESD control, not just a leather-look surface.
What are the seat and backrest dimensions?
The seat measures 440 × 410 mm and the backrest 400 × 300 mm, both in conductive PU foam. These generous dimensions give operators room and back support for extended sessions, and set the chair apart from more compact ESD models — useful when staff stay at their stations for long, focused periods.
Why does the foot ring matter on this chair?
Because at tall seat heights, the operator’s feet won’t reach the floor, and unsupported legs cause fatigue fast. The electroplated steel foot ring provides the legs with a stable resting point at height, making the chair usable for a full shift at an elevated bench. Combined with the armrest, it’s what makes tall, static-sensitive seated work genuinely sustainable.
What is the height adjustment range?
The JH-LS031 uses an export-grade gas pole with a tall range. With foot cups, it adjusts from 630 mm to 830 mm; with wheels, from 660 mm to 860 mm. This taller range suits high benches and standing-height workstations that shorter chairs can’t reach — common in electronics and cleanroom settings.
How is the JH-LS031 different from the JH-LS014 and JH-LS017?
All three are tall-bench ESD foam chairs, but they upgrade in different directions. The LS014 is the practical standard tall-bench chair, without an armrest. The LS031 adds an integrated armrest and a larger seat, so it’s the pick when arm support matters for precision work. The LS017 is the premium tier focused on seat size — the largest seat and back, and the tallest reach — but without an armrest. Choose the LS031 for arm support, the LS014 for a dependable, no-frills tall chair, and the LS017 for maximum seat size and support area.
How is the JH-LS031 different from the JH-LS038?
They solve different problems. The LS031 is built around tall benches — a big height range, a foot ring, and an armrest for elevated, static-sensitive work. The LS038 is a standard-height, fully ergonomic chair with padded armrests and an ergonomic backrest, designed for long-seated comfort at normal bench height. Choose the LS031 for tall, static-sensitive workstations that need arm support, and the LS038 when full ergonomic comfort at standard benches is the priority.
Do you offer OEM/ODM and export support for the JH-LS031?
Yes. We manufacture the JH-LS031 in our own facility, so we can support OEM and ODM projects and adjust specifications, configurations, and caster or foot-cup setups 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 elevated benches or inspection stations with ESD-safe seating that supports the arms? Send us your bench height, ESD requirements, caster or foot-cup preference, and whether operators perform precision or inspection work that benefits from arm support. Our team will prepare a tailored quotation for the JH-LS031 and confirm the right configuration for your workstations. For larger seating projects, tell us how many stations you’re equipping and how your team works, and we’ll recommend the right setup and confirm lead time.
