Unisteri

Compact Swing Door Sterilizers

Overview

Unisteri swing door steam sterilizers are designed to offer a compact footprint and are ideal for sterilizing laboratory materials, such as instruments, textiles, rubber goods, liquids agars, and animal diet and cages. With a range of options, including recessed wall mounting, EN285 compliant air detectors, and effluent sterilization cycles, Unisteri sterilizers can be configured to match your exact requirements while providing unmatched quality, reliability, and value.

Unisteri Brochure

Laboratory Steam Sterilizers

Unisteri Construction

Unisteri Sterilization Cycles

Unisteri sterilizers can be programmed with any combination of the sterilization cycles described below with configurable parameters for each cycle phase. The programmed cycle recipe is stored in the sterilizer’s control system memory and is recalled and started with the touch of a button on the operator interface. All recipes are also protected from unauthorized changes via a multi-level authentication system.


The dry good cycle provides effective sterilization of hard goods, filters, linens, and other porous materials, wrapped goods, and products that are unaffected by vacuum. The load is preconditioned utilizing vacuum and steam pulses. The cycle then advances to heat-up and continues until it reaches the settable exposure temperature of 110­°C up to 135°C. Once the exposure temperature set point is reached, the controller counts down the exposure time. After the exposure time is completed, drying begins and can be accomplished by fast exhaust and pulling a deep vacuum to remove moisture.


This cycle provides effective sterilization of rubber stoppers, hoses, and other material where trapped moisture can be difficult to remove. The load is preconditioned utilizing vacuum and steam pulses. The cycle then advances to heat-up and continues until it reaches the settable exposure temperature of 110°C up to 135°C. Once the exposure time is completed, drying begins and is accomplished by fast exhaust, vacuum, and air pulses which are highly effective at removing moisture from the load. To aid drying further, the air can be heated.


The solution cycle with gravity effectively sterilizes liquid products or items in vented or sealed glass containers. The load is preconditioned utilizing steam pulses. The cycle then advances to heat-up and continues until it reaches the settable exposure temperature of 110°C up to 135°C. Once the exposure temperature set point is reached, the controller counts down the exposure time. After the exposure time is completed, exhaust ramping gradually returns liquids to a temperature below boiling.



The solution cycle with gravity effectively sterilizes liquid products or items in vented or sealed glass containers. The load is preconditioned utilizing steam pulses. The cycle then advances to heat-up and continues until it reaches the settable exposure temperature of 110°C up to 135°C. Once the exposure temperature set point is reached, the controller counts down the exposure time. After the exposure time is completed, cooling of the product is started by injecting air at a pressure similar to that of the product to avoid breakage of the container. Cold water is introduced to the jacket of the chamber to help cool the product at a faster rate.
Sterivap sterilizers can be equipped with optional effluent sterilization cycles suitable for BSL-3 laboratory applications. During effluent sterilization cycles, all steam effluent is captured, filtered, and sterilized prior to being drained out the chamber, ensuring laboratory staff and the environment are further protected from contamination.

Sterilizer Steam Source

BMT USA steam generators are designed to provide pure or clean steam to meet the requirements of your sterilization application. The units can be configured as stand-alone units to be used as a central source of steam for multiple units, or directly built into the sterilizer for a fully integrated solution. BMT USA steam generators utilize high grade non-proprietary components and can be electrically heated or heated by plant steam.

Electric Heated Steam

BMT USA electric clean steam generators are equipped with an ASME pressure vessel constructed from 316L stainless steel. The heating elements require three-phase voltage that can be specified at time of order. The units are equipped with an automatic blow-down system that carries impurities to drain. Feed water booster pumps are available when feed water is not available at the required pressure.

Steam-to-Steam

BMT USA steam-to-steam generators utilize plant steam as the heating source to produce clean steam. The tube and shell heat exchanger is made from 316L stainless steel and can be built in single-tube or double-tube configurations. The evaporator utilizes a wetted design that minimizes the temperature difference between the feed water and the heating steam, reducing stress on the evaporator tube sheet.

Sterilizer Loading Equipment

Enhance the functionality of your Unisteri sterilizer and maximize useable space in the chamber with stainless steel loading equipment in standard or custom designs to accommodate any type of load. Unisteri sterilizers can be equipped with adjustable wire or perforated chamber shelves and loading racks, as well as loading carts and transfer trolleys. Carts with drop down wheels are also available for rooms with limited space.
Steam Sterilizer Loading Cart with perforated shelves

Unisteri Chamber Sizes

Model

Chamber Dimensions

(W X H X D)

External Dimensions

(W X H X D)

Chamber Volume

(ft³/Liters)

Doors

Single or Pass-Through
336-1

Chamber Dimensions

12.5″ x 12.5″x 24.6″
320 x 320 x 625 mm

External Dimensions

23.6″ x 59″ x 31.6″
600 x 1500 x 805 mm

Chamber Volume

2.57ft³/73L

Door Slide Direction

Single
336-2

Chamber Dimensions

12.5″ x 12.5″x 24.6″
320 x 320 x 625 mm

External Dimensions

23.6″ x 59″ x 33.8″
600 x 1500 x 860 mm

Chamber Volume

2.57ft³/73L

Door Slide Direction

Pass-Through
636-1

Chamber Dimensions

13.8″ x 26.4″ x 27.6″
350 x 670 x 700 mm

External Dimensions

27.2″ x 67.7″ x 38″
690 x 1720 x 965 mm

Chamber Volume

5.65ft³/160L

Door Slide Direction

Single
636-2

Chamber Dimensions

13.8″ x 26.4″ x 27.6″
350 x 670 x 700 mm

External Dimensions

27.2″ x 67.7″ x 40″
690 x 1720 x 1020 mm

Chamber Volume

5.65ft³/160L

Door Slide Direction

Pass-Through
559-1

Chamber Dimensions

20″ x 20″ x 38″
509 x 509 x 965 mm

External Dimensions

33.5″ x 67.7″ x 49.4″
850 x 1720 x 1255 mm

Chamber Volume

8.97ft³/254L

Door Slide Direction

Single
559-2

Chamber Dimensions

20″ x 20″ x 38″
509 x 509 x 965 mm

External Dimensions

33.5″ x 67.7″ x 51.5″
850 x 1720 x 1310 mm

Chamber Volume

8.97ft³/254L

Door Slide Direction

Pass-Through