






| Cat. no. | Capacity | Build | Controller |
|---|---|---|---|
| HTN-AV131 | 75 L | Classic (SS 304 inside, SS 202 outside) | LED (standard) |
| HTN-AV131-G | 75 L | Classic (SS 304 inside, SS 202 outside) | Graphic LCD (F0 value) |
| HTN-AV131-R | 75 L | Classic (SS 304 inside, SS 202 outside) | Recording (21 CFR software) |
| HTN-AV132 | 75 L | Prime (All SS 304) | LED (standard) |
| HTN-AV132-G | 75 L | Prime (All SS 304) | Graphic LCD (F0 value) |
| HTN-AV132-R | 75 L | Prime (All SS 304) | Recording (21 CFR software) |
| HTN-AV137 | 138 L | Classic (SS 304 inside, SS 202 outside) | LED (standard) |
| HTN-AV137-G | 138 L | Classic (SS 304 inside, SS 202 outside) | Graphic LCD (F0 value) |
| HTN-AV137-R | 138 L | Classic (SS 304 inside, SS 202 outside) | Recording (21 CFR software) |
| HTN-AV138 | 138 L | Prime (All SS 304) | LED (standard) |
| HTN-AV138-G | 138 L | Prime (All SS 304) | Graphic LCD (F0 value) |
| HTN-AV138-R | 138 L | Prime (All SS 304) | Recording (21 CFR software) |
| HTN-AV133 | 175 L | Classic (SS 304 inside, SS 202 outside) | LED (standard) |
| HTN-AV133-G | 175 L | Classic (SS 304 inside, SS 202 outside) | Graphic LCD (F0 value) |
| HTN-AV133-R | 175 L | Classic (SS 304 inside, SS 202 outside) | Recording (21 CFR software) |
| HTN-AV134 | 175 L | Prime (All SS 304) | LED (standard) |
| HTN-AV134-G | 175 L | Prime (All SS 304) | Graphic LCD (F0 value) |
| HTN-AV134-R | 175 L | Prime (All SS 304) | Recording (21 CFR software) |
| HTN-AV135 | 185 L | Classic (SS 304 inside, SS 202 outside) | LED (standard) |
| HTN-AV135-G | 185 L | Classic (SS 304 inside, SS 202 outside) | Graphic LCD (F0 value) |
| HTN-AV135-R | 185 L | Classic (SS 304 inside, SS 202 outside) | Recording (21 CFR software) |
| HTN-AV136 | 185 L | Prime (All SS 304) | LED (standard) |
| HTN-AV136-G | 185 L | Prime (All SS 304) | Graphic LCD (F0 value) |
| HTN-AV136-R | 185 L | Prime (All SS 304) | Recording (21 CFR software) |
| HTN-AV139 | 235 L | Classic (SS 304 inside, SS 202 outside) | LED (standard) |
| HTN-AV139-G | 235 L | Classic (SS 304 inside, SS 202 outside) | Graphic LCD (F0 value) |
| HTN-AV139-R | 235 L | Classic (SS 304 inside, SS 202 outside) | Recording (21 CFR software) |
| HTN-AV140 | 235 L | Prime (All SS 304) | LED (standard) |
| HTN-AV140-G | 235 L | Prime (All SS 304) | Graphic LCD (F0 value) |
| HTN-AV140-R | 235 L | Prime (All SS 304) | Recording (21 CFR software) |
| HTN-AV141 | 339 L | Classic (SS 304 inside, SS 202 outside) | LED (standard) |
| HTN-AV141-G | 339 L | Classic (SS 304 inside, SS 202 outside) | Graphic LCD (F0 value) |
| HTN-AV141-R | 339 L | Classic (SS 304 inside, SS 202 outside) | Recording (21 CFR software) |
| HTN-AV142 | 339 L | Prime (All SS 304) | LED (standard) |
| HTN-AV142-G | 339 L | Prime (All SS 304) | Graphic LCD (F0 value) |
| HTN-AV142-R | 339 L | Prime (All SS 304) | Recording (21 CFR software) |
| HTN-AV143 | 552 L | Classic (SS 304 inside, SS 202 outside) | LED (standard) |
| HTN-AV143-G | 552 L | Classic (SS 304 inside, SS 202 outside) | Graphic LCD (F0 value) |
| HTN-AV143-R | 552 L | Classic (SS 304 inside, SS 202 outside) | Recording (21 CFR software) |
| HTN-AV144 | 552 L | Prime (All SS 304) | LED (standard) |
| HTN-AV144-G | 552 L | Prime (All SS 304) | Graphic LCD (F0 value) |
| HTN-AV144-R | 552 L | Prime (All SS 304) | Recording (21 CFR software) |
Downloads
A double walled horizontal autoclave for larger sterilization loads, from 75 to 552 L. It sterilizes at 121 °C at 15 psi; the working pressure is adjustable from 10 to 20 psi (about 115 to 126 °C), and every unit is hydraulically tested to 40 psi.
Choose in three steps: the size, the build and the controller. Classic is SS 304 inside and SS 202 outside, on a black powder coated mild steel stand. Prime is all SS 304, stand included. The stainless steel lid closes with a radial lock. A separate SS boiler (steam generator) under the chamber comes as standard, with valves to inject steam into the chamber and release it after use. An automatic pressure control switch holds the set pressure by switching the heater, a vacuum breaker breaks any vacuum formed as the steam condenses, and an automatic low water cut-off protects the heater.
Need a triple walled unit with a steam jacket? See the horizontal steam sterilizer, HTN-AV161.
For laboratory use only.
Features
- Seven sizes from 75 to 552 L, Classic or all SS 304 Prime build
- LED, Graphic LCD or Recording controller runs the full cycle
- Pressure adjustable from 10 to 20 psi, hydraulically tested to 40 psi
Build materials
| Part | Classic | Prime |
|---|---|---|
| Inner chamber | SS 304 | SS 304 |
| Outer wall | SS 202 | SS 304 |
| Lid | SS 304, radial lock | SS 304, radial lock |
| Stand | MS, black powder coated | SS 304 |
How the cycle runs
- Heat up: air is let out of the chamber.
- Sterilize: the timer runs at the set temperature.
- Cool down: a buzzer sounds, the heater stops and the pressure falls.
All three controllers run this cycle by themselves. The timer starts only at the set temperature, so every load gets its full time. The cycle stops if the water runs low or the temperature goes too high, and the pressure control switch cuts the heater if the pressure rises too high.
Compare controllers
| Feature | LED | Graphic LCD | Recording |
|---|---|---|---|
| Runs the full cycle automatically | ✓ | ✓ | ✓ |
| Temperature and pressure display | ✓ | ✓ | ✓ |
| Stage and time left on one screen | – | ✓ | ✓ |
| F0 value: how much sterilizing each load received | – | ✓ | ✓ |
| Choose when the cycle ends: as soon as sterilizing time is over, once the temperature has fallen by a set amount, or after a set cooling time | – | ✓ | ✓ |
| Four sensors map the load | – | – | ✓ |
| PC report software built for 21 CFR compliance | – | – | ✓ |
| Batch records and reports on a PC | – | – | ✓ |
| Printer for a paper record (option) | – | – | ✓ |
Why upgrade?
- Graphic LCD: see the whole cycle at a glance. The F0 value adds up the sterilizing effect of every minute above 100 °C, heat up and cool down included, so you can see how much each load received.
- Recording: every batch is recorded and reported on a PC with software built for 21 CFR compliance, which supports audits and validation. Four sensors check the load itself, not just the chamber.
What is the F0 value?
- What: the sterilizing effect of a cycle, counted in minutes at 121 °C.
- How: the controller reads the chamber temperature all through the cycle. A minute at 121 °C counts as 1, at 111 °C as 0.1, at 131 °C as 10. It adds them up, heat up and cool down included.
- Why: the same timer setting can give a big or slow-heating load less sterilizing than a small one. F0 shows what each load actually got.
- Reading it: F0 15 means the same effect as 15 minutes at 121 °C. If a load ends below the F0 your method needs, run it again or check the load.
Please note: F0 shows how much sterilizing a load received, not whether it is sterile. Only biological indicators placed in the load can confirm that.
Sizes
| Capacity | Chamber (dia. × depth) | Heater load | Classic Cat. no. | Prime Cat. no. |
|---|---|---|---|---|
| 75 L | 400 × 600 mm | 6 kW | HTN-AV131 | HTN-AV132 |
| 138 L | 400 × 1100 mm | 12 kW | HTN-AV137 | HTN-AV138 |
| 175 L | 500 × 900 mm | 9 kW | HTN-AV133 | HTN-AV134 |
| 185 L | 550 × 750 mm | 9 kW | HTN-AV135 | HTN-AV136 |
| 235 L | 500 × 1200 mm | 12 kW | HTN-AV139 | HTN-AV140 |
| 339 L | 600 × 1200 mm | 12 kW | HTN-AV141 | HTN-AV142 |
| 552 L | 750 × 1200 mm | 18 kW | HTN-AV143 | HTN-AV144 |
Add -G for the Graphic LCD or -R for the Recording controller, for example HTN-AV131-G.
Performance
- PressureAdjustable 10 to 20 psi; hydraulically tested to 40 psi
- Temperature controlAutomatic cycle controller in three versions: LED, graphic LCD with F0 value, and recording with PC reports
General
- Inner chamberSS 304
- DoorStainless steel plate lid with radial locking; no steam jacket
- SafetySafety valve, vacuum breaker, pressure control switch, low water cut-off and mains MCB
- Supplied withSeparate SS boiler, pressure gauge, steam inject and release valves
- Outer bodyClassic: SS 202 on black powder coated MS stand. Prime: all SS 304, stand included

