Key Features
- One-piece molded PU foam seat with a short backrest, 340 × 380 mm — durable, seamless construction with light lower back support.
- ESD surface and system resistance, 10⁶–10⁹ Ω — meets standard anti-static requirements (conductive casters or foot cups required).
- Steel base with epoxy powder coating or electroplated finish — corrosion-resistant footing for daily use.
- Export-grade pneumatic gas lift — reliable, single-lever height adjustment through frequent daily cycles.
- Multiple height configurations — 430–580 mm with foot cups, 450–600 mm with standard casters, or 600–800 mm with tall casters for elevated benches.
- Stainless steel foot ring, 35 cm diameter — a stable footrest at taller settings.
- Chrome-plated five-star steel base, 560 mm diameter — a wide, balanced footing; aluminum alloy base available as an option.
- PA casters with metal conductive chain — smooth movement plus reliable static discharge; fixed foot cups optional.
Why Choose This Stool
For procurement teams, the JH-LS021 pairs anti-static performance with back support and low maintenance in one practical seat:
- Support without the bulk. The short backrest eases lower-back strain during longer seated tasks while keeping the stool slim enough to tuck under benches.
- Configurable to your floor and bench height. Choose conductive casters for mobility or fixed foot cups for a stationary setup, and select the height range that fits your workstations.
- Long service life. A coated steel base and chrome-plated five-star feet resist corrosion in humid, hardworking lab conditions, extending replacement cycles.
- Low upkeep. The molded PU foam seat withstands daily contact without cracking or peeling, and the simple build has few wear points.
- Factory-direct value. Manufactured in-house at Jiahong Laboratory, with consistent unit-to-unit quality, volume pricing, and OEM/ODM support.
Applications
The JH-LS021 suits static-sensitive environments where comfort and back support both matter:
- Electronics factories and assembly lines
- Cleanrooms and controlled environments
- Laboratories and research centers
- Quality-control and inspection stations
- Chemical and biological workstations
Technical Specifications
| Specification | Detail |
|---|---|
| Model | JH-LS021 |
| Seat & Backrest | One-piece molded PU foam, short back, 340 × 380 mm |
| Surface Resistance | 10⁶–10⁹ Ω |
| System Resistance | 10⁶–10⁹ Ω (conductive casters or foot cups required) |
| Base Material | Steel with epoxy powder coating or electroplated finish |
| Gas Lift | Export-grade pneumatic gas lift |
| Height Range — Foot Cups | 430–580 mm |
| Height Range — Standard Casters | 450–600 mm |
| Height Range — Tall Casters | 600–800 mm (for elevated benches) |
| Foot Ring | Stainless steel, 35 cm diameter |
| Five-Star Base | Chrome-plated steel, 560 mm diameter (aluminum alloy base optional) |
| Casters | PA casters with metal conductive chain; fixed foot cups optional |
Related Models
| Model | Best For | Key Difference |
|---|---|---|
| JH-LS021 | Longer seated ESD work | PU foam seat with short back support |
| JH-LS001 | Quick tasks, compact spaces | Backless version of the same PU foam ESD seat |
| JH-LS019 | Cleanroom use | Reinforced, cleanroom-focused construction |
| JH-LS008 | Elevated benches | Tall-range anti-static stool with foot ring |
Choose the JH-LS021 when back support during longer sessions matters. Pick a backless, cleanroom-focused, or tall-range model when a slimmer profile, cleanroom compliance, or high-bench seating is the priority. Ask our team if you’d like help comparing configurations.
Request a Quote for the JH-LS021
Equip your lab or cleanroom with cushioned anti-static seating configured to your workflow. Send us the details below, and our team will recommend the right setup and prepare a tailored quotation:
- Quantity needed
- Required height range (foot cups, standard casters, or tall casters)
- Caster or foot-cup preference
- Application environment (lab, cleanroom, electronics, etc.)
- Destination country or port
We offer factory-direct pricing, volume discounts for distributors and lab builders, OEM/ODM projects, and reliable worldwide exports.
Frequently Asked Questions
Does the JH-LS021 meet anti-static (ESD) requirements?
Yes. The stool maintains surface and system resistance at 10⁶–10⁹ Ω, meeting standard anti-static requirements and supporting gradual, controlled static dissipation. The ESD performance is built into the seat rather than applied as a coating. To keep the full system within range, use conductive casters or foot cups; the casters include a metal conductive chain for reliable discharge.
What does the short backrest add compared to a backless stool?
The short back gives your lower back light support during longer seated tasks, which a fully backless stool, such as the JH-LS001, doesn’t offer. At the same time, the back stays compact, so the stool remains slim enough to tuck under benches and turn freely. You get useful support without the bulk of a full-back chair.
What are the height adjustment ranges?
The export-grade gas lift comes in three configurations to suit different benches. With foot cups, the height adjusts from 430 to 580 mm. With standard casters, it adjusts from 450 to 600 mm. For elevated benches and standing-height workstations, a tall caster version is available in heights ranging from 600 to 800 mm. Let our team know which configuration you need when you request a quote.
What caster and foot-cup options are available?
The stool can be fitted with high-strength, wear-resistant PA casters that include a metal conductive chain for smooth movement and continuous grounding. If you prefer a stationary setup, fixed foot cups are available instead. A range of caster types is also available to match your floor. Note that conductive casters or foot cups are needed to maintain the full ESD system.
What is the stainless steel foot ring for?
The foot ring is made of stainless steel and has a diameter of 35 cm. Because the stool can rise well above standard bench height, your feet often won’t reach the floor at full height. The foot ring gives your legs a stable place to rest, helping reduce fatigue during long periods of seated work at elevated workstations.
How does the JH-LS021 differ from the JH-LS001?
Both stools use the same PU foam anti-static seat and deliver ESD protection for static-sensitive work. The key difference is the backrest. The JH-LS021 adds a short back that supports your lower back during longer seated sessions, while the JH-LS001 stays fully backless for a slimmer, more mobile profile. Choose the JH-LS021 for cushioned comfort with added support, and the JH-LS001 for compact, quick-task seating.
Do you offer OEM/ODM and export support?
Yes. Jiahong Laboratory manufactures the JH-LS021 in-house, so we can adjust the base, height range, caster or foot-cup setup, and other specifications to match your project. We offer factory-direct pricing, volume discounts for distributors and lab builders, and reliable export for buyers worldwide.
