Sizing Your OT Scrub Station: When to Spec 1-Bay, 2-Bay, or 3-Bay Configurations.

MedGenz Admin
Medical Infrastructure Expert
September 21, 2026
6 Min Read
Sizing Your OT Scrub Station: When to Spec 1-Bay, 2-Bay, or 3-Bay Configurations.

Specifying the wrong surgical scrub sink size creates an immediate operational bottleneck. If a station is undersized, surgeons wait in line, turnaround times between cases drag, and the daily surgical schedule slips. If it is oversized, you waste premium sterile corridor footprints and overcomplicate the plumbing and drainage matrix.

Choosing between a 1-bay, 2-bay, or 3-bay stainless steel scrub station comes down to concurrent surgical staff requirements, available wall space, and your hospital's specific facility type. For hospital administrators and biomedical engineers designing a turnkey Modular Operation Theatre, here is how to map station size directly to your clinical workflow to ensure strict NABH and ISO compliance.

1-Bay Scrub Stations: The Space-Saver:

(Standard Width: Approx. 750 mm – 850 mm)

A single-bay station is designed for maximum efficiency in constrained footprints. It provides enough basin width and anti-splash geometry for a single user to perform a standard 3-minute surgical hand scrub without compromising the sterile technique.

  • Ideal Clinical Environment: Day-care surgery centers, dedicated eye clinics, dental surgery rooms, and minor procedure OTs.
  • Engineering Consideration: 1-bay units are often wall-mounted to allow for easy floor mopping beneath the unit.
  • The Drawback: Zero redundancy. If a sensor fails, the surgeon has no adjacent bay to move to, which is why having an integrated manual override is critical.

2-Bay Scrub Stations: The Industry Standard:

(Standard Width: Approx. 1500 mm)

The 2-bay configuration is the workhorse of modern modular operating rooms. It perfectly balances footprint conservation with high clinical throughput, allowing the primary surgeon and the first assistant (or scrub nurse) to prep simultaneously.

For instance, our flagship Surgical Scrub Sink Station (Double Station) at MedGenz is engineered precisely at 1500x600x1050mm. Built from premium medical-grade stainless steel, this 2-bay unit features a touch-free, sensor-operated digital panel.

  • Ideal Clinical Environment: Standard multi-specialty OTs, ENT hospitals, general surgery suites, and mid-sized nursing homes.
  • Engineering Consideration: A 2-bay station requires precise thermostatic mixing valve calibration. When both bays trigger simultaneously, water pressure and temperature must remain stable.
  • Integration: When mapping out your 2-bay sink, it must be positioned carefully so the plumbing doesn't interfere with the routing of your Medical Gas Pipeline Systems (MGPS) or bump against hermetically sealed OT doors.

3-Bay Scrub Stations: The High-Volume Powerhouse:

(Standard Width: Approx. 1800 mm – 2200 mm)

Three-bay stations are built for high-acuity, high-headcount procedures where multi-disciplinary teams must prep simultaneously. These units are massive, heavy-gauge installations that dominate the OT entry corridor.

  • Ideal Clinical Environment: Trauma centers, heart and neuro superspeciality hospitals, teaching hospitals, and orthopedic joint-replacement centers.
  • Engineering Consideration: These units demand heavy-duty plumbing infrastructure. The drain trough must be aggressively sloped to handle the high volume of water rapidly, and floor-mounting with a concealed rear maintenance hatch is standard due to the massive weight of the unit.

The MedGenz Advantage: Specifying for Infection Control

Regardless of whether you choose a 1-bay or 3-bay unit, the geometry and actuation of the sink dictate whether you pass or fail an infection control audit.

At MedGenz, our surgical scrub stations are designed to seamlessly integrate into full Modular Operation Theatre setups. We eliminate stagnant water pooling through deep-drawn, seamlessly welded basins, and utilize touch-free IR sensors to completely remove surface cross-contamination.

Key Specs to Look For:

  • Material: 304/316-grade Stainless Steel to prevent pitting corrosion from harsh chemicals like povidone-iodine.
  • Actuation: Sensor-operated delivery systems backed by a digital panel for easy flow monitoring.
  • Filtration: Space to accommodate inline UV sterilization and microbial filters before the water hits the gooseneck tap.

Ready to Upgrade Your Hospital Infrastructure?

A scrub sink is just one piece of a complex puzzle. Designing a compliant OT requires synchronizing your scrub stations with shadowless surgical LED lights, laminar airflow ceilings, and anti-static flooring.

We engineer and execute complete turnkey hospital ecosystems. If you are planning a new facility or upgrading an existing surgical suite, connect with the experts at MedGenz India Pvt Ltd in New Delhi. We will help you select the exact equipment specifications your facility needs.

👉 [Explore our Surgical Scrub Sink Stations here]

👉 [Learn more about our Turnkey Modular Operation Theatre Services]

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Common Questions

Article FAQs

1How do I know if my operation theatre needs a 2-bay or 3-bay scrub station?
The decision depends on your daily case volume and surgical team size. A 2-bay station (approx. 1500mm wide) is the industry standard for multi-specialty OTs and general surgery, allowing a surgeon and a scrub nurse to prep simultaneously. A 3-bay station is necessary only for high-acuity environments—like trauma centers, teaching hospitals, or orthopedic suites—where multiple teams must scrub in concurrently for rapid case turnarounds.
2Can a 1-bay scrub station fail an infection control audit?
A 1-bay station will not fail an audit purely based on its size, provided it is used in an appropriate setting (like an eye clinic or day-care surgery center). However, it can cause an audit failure if it lacks a hands-free actuation system (sensor, knee, or foot pedal), uses an aerated tap that harbors bacteria, or lacks the basin depth to prevent contaminated water from splashing onto sterile scrubs.
3What is the minimum sterile corridor width required for a 2-bay scrub sink?
When installing a 2-bay or 3-bay scrub station, you must maintain a dedicated sterile corridor width of at least 1.5 meters (approx. 5 feet) behind the scrubbing surgeons. This ensures that circulating nurses or facility staff walking past the station do not accidentally break the sterile field or bump into the surgeons while they prep.
4Why do surgical scrub sinks use thermostatic mixing valves (TMVs)?
TMVs are critical for maintaining a safe, consistent water temperature (usually between 18–24°C) without scalding the user. In multi-bay stations (2-bay or 3-bay), a TMV ensures that when one surgeon activates the water in bay one, the pressure and temperature do not abruptly drop or spike in bay two. This prevents the surgical team from cutting their mandatory 3-minute hand scrub short due to water temperature discomfort.
5What grade of stainless steel is required for NABH-compliant scrub stations?
Scrub sinks should be manufactured using medical-grade SS 304 or SS 316L stainless steel (ideally 14-gauge or 16-gauge thickness). Standard commercial steel will rapidly suffer from pitting corrosion and rust when exposed to heavy hospital-grade disinfectants, chlorhexidine, and povidone-iodine used during surgical scrubbing.
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