Kronos Class S autoclave, 18 litres

With its 18-litre chamber the Kronos S keeps up with a practice working at full pace, without the cost of a Class B. It draws one vacuum before the steam and one after, for drying: in Class S you sterilise solid instruments, simple hollow instruments and small porous loads. Narrow-lumen hollow instruments, multiple wrapping and normal porous loads need a Class B instead.

Ten programmes, from the rapid one for bare instruments to the prion cycle, let you match water and power use to the load. The door closes with a motor and stays locked under vacuum until the end; sensors adapt the cycle length to the conditions in the chamber and in the room, and the display tells you when maintenance is needed.

Every cycle comes out on paper from the built-in printer. The conductivity meter checks the water at every load: with the OSMO3 version it arrives already purified from the mains supply, with no canisters to buy; with the internal data logger cycles are also stored on a USB stick and archived on the computer.

Features

• Class S with pre- and post-vacuum
• 10 preset sterilisation programmes, including the prion cycle at 134 °C
• Bowie & Dick and vacuum leak test programmes
• Built-in steam generator
• Motorised closing with the door locked under vacuum
• Conductivity meter for water quality
• Built-in thermal printer and multilingual four-button display
• Test result memory (Memory Test System)
• Front pump to fill the tank from a canister on the floor; manual or automatic draining
• Extra drying of 5 or 15 minutes, standby after 60 minutes and delayed start
• Outer panels with antimicrobial treatment
• Connection for an external data logger

Programmes

• Wrapped hollow instruments: 32 min at 134 °C, 43 min at 121 °C
• Wrapped solid instruments: 29 min at 134 °C, 40 min at 121 °C
• Porous loads: 43 min at 134 °C, 53 min at 121 °C
• Prions: 47 min at 134 °C
• Rapid: 23 min at 134 °C, 35 min at 121 °C
• Unwrapped hollow instruments: 30 min at 134 °C
• Bowie & Dick test: 28 min
• Vacuum leak test: 15 min

Times include preheating and drying and vary with the load and the power supply.

Technical data

• 18-litre chamber, ø 236 × 381.5 mm, AISI 304 steel
• Maximum load: 1 kg wrapped, 2.5 kg unwrapped, 0.5 kg porous
• 4 aluminium trays, 185 × 285 × 18 mm
• External dimensions 505 × 615 × 400 mm (width × depth × height), weight 52 kg
• Clearance to open the door: 350 mm
• 4-litre tanks for clean and used water
• Power supply 230 V, 50–60 Hz, power 2,400 W

Included

• 4 aluminium trays with tray holder and handle to remove them
• Water fill and drain hoses, sponge

Versions

• Internal data logger: records every cycle on a USB stick, to download to the computer
• OSMO3: separate reverse osmosis unit with carbon pre-filter, membrane and resin filter; connects to the mains water supply, works without electricity and can be placed up to 5 metres from the autoclave