WPS-100 vs WPS-400 vs WPS-120: which ozone generator do you need?
Short answer: the WPS-100 is our introductory single-chamber model, the WPS-400 adds a second chamber so you can run lower or higher levels from one machine, and the WPS-120 gives the widest calibrated range, 8 to 128 µg/ml, with absolute settings and a lifetime warranty on parts and labor.
Side by side
| WPS-100 | WPS-400 | WPS-120 | |
|---|---|---|---|
| Output | Up to 80 µg/ml | Two chambers: one for lower levels, both for higher levels (o8, o12, o13) | 8 to 128 µg/ml |
| Chambers | One | Two, each with its own on/off switch and regulator | One quartz cell |
| Settings | Variable output positions | Variable selector switch for each chamber | Absolute settings with a calibrated output chart |
| Ozone method | Quartz glass cold corona tube, Silent Pulse Injection Cold Corona Discharge | Quartz glass cold corona tube | High quality quartz cell |
| Power | 100 to 240 V, no transformer needed | Regular 110 V outlet | 12 VDC adapter (100 to 230 V), 17 watts, standard US 3 prong plug |
| Connections | Luer lock | Two inlet and two outlet hose barbs for 3/16″ silicone hose | 316 stainless steel luer lock |
| In the box | Hoses to connect to oxygen, silicone and vinyl tubing, stone diffuser, aluminum case | Hoses to connect to oxygen, ozone resistant silicone outlet hoses, stone diffuser, aluminum case | Calibrated output chart |
| Warranty | See product page | See product page | Lifetime warranty on all parts and labor |
| Made in | USA | USA | USA |
| Price at time of writing | $599 | $899 | $1,395 |
What all three have in common
All three are oxygen-fed generators made in the USA. The WPS-100 and WPS-400 use a unique quartz glass cold corona tube that does not come in contact with metal and does not generate a significant amount of heat, and both are built to last for years without maintenance. All three need an oxygen source, either an oxygen tank or an oxygen concentrator, sold separately.
WPS-100: the place to start
The WPS-100 is our introductory model. It has one ozone chamber with its own on/off switch and regulator, produces up to 80 µg/ml, and runs on any power source between 100 and 240 volts with no transformer, so it works almost anywhere. It comes ready to use: hoses to connect to oxygen, silicone and vinyl tubing, and a stone diffuser for making ozonated water, all in a lightweight aluminum case. See the WPS-100.
Choose it if you have one main use and want a dependable generator without paying for capacity you will not use.
WPS-400: two chambers, more flexibility
The WPS-400 is our newest model. Its two ozone chambers can be used independently for lower ozone levels, or together for higher levels of isotopes such as o8, o12 and o13. Each chamber has its own on/off switch, regulator and variable selector switch, which gives an unlimited number of output settings. It has two inlet and two outlet hose barb fittings for 3/16″ silicone hose and runs from a regular 110 V outlet. See the WPS-400.
Choose it if you have more than one use for ozone. If you can stretch to it, we suggest the WPS-400 for multiple uses.
WPS-120: precision and the widest range
The WPS-120 covers 8 µg/ml to 128 µg/ml with absolute settings, so you dial in an exact concentration instead of a position. It comes with a calibrated output chart, uses a high quality quartz cell for ultra pure and ultra stable output, and is tested to be free of contaminants and byproducts. Its 316 stainless steel luer lock connections give an air tight seal, its components are A-rated against ozone degradation, it draws just 17 watts, and it carries a lifetime warranty on all parts and labor. See the WPS-120.
Choose it if you need precise, repeatable concentrations or the highest output in our range.
Quick way to decide
- One use, best value: WPS-100.
- Several uses, lower and higher levels from one machine: WPS-400.
- Exact concentrations, widest range, lifetime warranty: WPS-120.
Questions we get asked
Do any of them run on room air?
They are designed to be fed by an oxygen source, either an oxygen tank or an oxygen concentrator. Feeding pure oxygen is what makes the higher concentrations possible.
What else do I need to buy?
An oxygen source, and a low-flow regulator if you use a tank, such as our CGA-540 regulator. The WPS-100 and WPS-400 already include tubing and a stone diffuser; extra silicone tubing and stone diffusers are sold separately.
Will they work outside the US?
The WPS-100 runs on 100 to 240 V with no transformer needed, and the WPS-120 adapter accepts 100 to 230 V. The WPS-400 uses a regular 110 V outlet.
A note on safety
Ozone is a strong oxidizer and it is harmful to breathe. Run your generator in a well ventilated room, keep the ozone inside tubing and closed containers, never breathe it directly, and follow the instructions that come with your unit.