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title: "Specialist chairs"
description: "Specialist chairs Bimos ESD Neon for ESD and cleanroom zones conduct electrostatic charge away, protecting the workstation. Request a quote from Renggli."
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# Specialist chairs

> Specialist chairs Bimos ESD Neon for ESD and cleanroom zones conduct electrostatic charge away, protecting the workstation. Request a quote from Renggli.

![Specialist chairs](https://www.renggli.pl/catalog-source/ai/ai-b-chair-1-v2.webp)

Specialist chairs are seats for ESD areas and cleanrooms. The upholstery, frame, castors and glides dissipate electrostatic charge, and the construction keeps particle emission low. The range includes Bimos ESD Neon chairs, each configured for a specific workstation.

## How an ESD chair dissipates charge {#how-an-esd-chair-dissipates-charge}

An ESD chair carries charge from the operator's body to earth. The path runs through the cover, frame, column and castors or glides, and it must not be broken anywhere. In Bimos ESD Neon chairs the upholstery, steel parts, plastic parts, castors and glides are all conductive, so no single component interrupts that path. In polyurethane seats, conductivity comes from graphite embedded in the material.

ESD protection is required at workstations that handle electronics, where a discharge destroys components during production. It is also needed wherever flammable substances are present, because a discharge there can cause ignition. At acceptance, the chair must come with a test report that gives the surface resistance measured on that specific unit and names the reference standard. The same requirements apply to seating without a backrest: [laboratory stools](https://www.renggli.pl/en/offer/laboratory-chairs/laboratory-stools) are also available in ESD versions.

## Cleanroom chairs and ISO 14644-1 cleanliness classes {#cleanroom-chairs-and-iso-14644-1-cleanliness-classes}

A cleanroom chair is chosen to suit the cleanliness class of the area, because manufacturers declare a model's compliance with a specific class rather than with ISO 14644-1 as a whole. The standard defines classes from ISO 1 to ISO 9. Laboratories and production facilities most often work to ISO 5 to ISO 8, and the lower the number, the fewer particles are permitted in the air. Most of those particles come from the people and equipment in the room.

A seat for a clean area has a hermetically sealed gas lift cover and a closed construction with no exposed upholstery parts. Its metal parts have a smooth, non-porous surface. An integral skin polyurethane cover does not absorb water or grease and withstands disinfection and UV radiation. In GMP areas, typical of pharmaceutical laboratories, the choice of chair forms part of room qualification, so the seat's parameters must be documented. We describe the whole selection process in our guide on [how to choose a cleanroom chair](https://www.renggli.pl/en/blog/cleanroom-chair-how-to-choose-according-to-iso). At workstations with no cleanliness or ESD requirements, standard [laboratory chairs](https://www.renggli.pl/en/offer/laboratory-chairs/laboratory-chairs) are sufficient.

## What determines the price of a specialist chair {#what-determines-the-price-of-a-specialist-chair}

The price of a specialist chair depends on what the chair has to protect the workstation against and how long the operator sits on it. The cost is driven by:

- version: ESD protection, cleanroom requirements, or both,
- cover: integral skin polyurethane moulded together with the seat core, or conductive upholstery (materials are compared in our article on [how to choose chair upholstery](https://www.renggli.pl/en/blog/laboratory-chair-upholstery-how-to-choose)),
- seat type: low chair, high chair with a ring footrest, or stool,
- adjustments: height, backrest angle, seat depth, synchronous mechanism, armrests,
- documentation: declared cleanliness class and a resistance test report for the individual unit.

Seat height depends on the worktop the chair is used at, so the adjustment range is set together with the [laboratory furniture](https://www.renggli.pl/en/offer/laboratory-furniture-systems) at the workstation. We show how to match the adjustments to the worktop and the user in our article on choosing [an ergonomic laboratory chair](https://www.renggli.pl/en/blog/laboratory-chair-how-to-choose-an-ergonomic-model-for-work-in-the-laboratory). Specialist chairs belong to our range of [laboratory seating](https://www.renggli.pl/en/offer/laboratory-chairs).

## ESD Zone {#esd-zone}

One of the biggest dangers at electronic workstations is electrostatic discharge. This can lead to significant damage during production. Therefore, it is essential to constantly prevent the charging of objects or people at the ESD workstation and ensure the conduction of displaced charge. Bimos ESD chairs provide reliable protection in the ESD workplace: upholstery, steel elements, plastic, wheels, and sliders are conductive. Thanks to the comprehensive guidance of all components, Bimos ESD chairs are a reliable solution in any ESD space.

**Are you interested in this product?**

[Make an inquiry now](https://www.renggli.pl/en/contact)

## Questions about specialist chairs

**What is the difference between an antistatic chair and an ESD chair?**

An antistatic chair only limits the build-up of charge on its own surface, whereas an ESD chair carries the charge away to earth. A dissipative element does this at a controlled rate. Workstations with electronics or flammable substances need a complete dissipation path: a conductive cover, frame, and castors or glides that connect the chair to earth.

**Can the castors on an ESD chair be replaced with standard ones?**

No. The castors and glides are the final section of the path along which charge flows from the chair to earth. A standard castor is not conductive, so it breaks that path and cancels the protection of the whole chair, even though the cover and frame are still conductive. Replacement parts for an ESD chair must have the same conductive properties as the original components.

**Chair or stool for a cleanroom?**

A cleanroom stool meets the same material requirements as a chair. It has no backrest, so it gives the operator more freedom of movement and makes it easier to get up frequently to reach the equipment. For microscopy or analytical work lasting several hours, a chair with a backrest is the better choice, because a stool does not relieve the lumbar spine. We describe the selection criteria in our article on [when a stool is the better choice](https://www.renggli.pl/en/blog/laboratory-stool-design-requirements-application).