RespiCOz vs Masimo EMMA: An Honest Comparison

RespiCOz vs Masimo EMMA is a fair comparison to make, because the two devices are genuinely in the same category. Both are portable mainstream capnographs. Both put the sensor at the airway. Both avoid sampling lines and water traps entirely.

We make one of them, so treat this page accordingly. What follows is written to be accurate rather than flattering, including where the EMMA is the better choice. A comparison that gives a competitor no strengths is not worth reading.

Key takeaways

• Both are mainstream capnographs with no sampling line, no water trap and fast readings.
• The EMMA has an integrated onboard display and runs on standard AAA batteries.
• RespiCOz adds FiCO2 monitoring, a longer warranty and local Indian service.
• On price, RespiCOz sits meaningfully below the EMMA in the Indian market.
• The right choice depends on whether you value a self-contained device or lower cost with local support.

What the two have in common

It is worth being clear about how much is shared, because it narrows the decision.

Both are mainstream devices. The sensor clips onto an airway adapter in the breathing circuit and reads the exhaled breath directly. That means no sampling line to kink or clog with secretions, no water trap to empty, and no transit delay before the reading appears. Both suit intubated and ventilated patients, and neither is designed for a free-breathing patient on a nasal cannula. See mainstream vs sidestream capnography.

Both use non-dispersive infrared measurement, both display a waveform rather than just a number, both are portable and battery-powered, and both are designed to work without routine calibration.

So this is not a comparison of technologies. It is a comparison of two implementations of the same technology.

RespiCOz vs Masimo EMMA at a glance

Specifications and prices are indicative and change. Verify current details with each supplier before purchase.

Where the Masimo EMMA is strong

Three things genuinely favour the EMMA, and they matter in specific settings.

It is entirely self-contained. The EMMA has an integrated OLED display showing the EtCO2 value, respiratory rate and the capnogram on the device itself. Nothing else is needed. In a field setting, in an aid bag, or anywhere a phone is impractical or unavailable, that independence is a real advantage.

Standard AAA batteries. Two off-the-shelf AAA cells, giving roughly six hours on alkaline and around ten on lithium. Anyone, anywhere, can replace them in seconds without a charger or a power source. For remote or prolonged field use, this is a meaningful design choice.

Brand, ruggedness and track record. Masimo is a long-established monitoring manufacturer, the EMMA is water-resistant and built for demanding environments, it covers adult, paediatric and infant patients, and it carries FDA approval with a substantial installed base and published literature behind it.

If your priority is a rugged, self-contained device for field or pre-hospital use where no companion device is practical, the EMMA is a strong choice and we would say so.

Where RespiCOz is strong

Four differences run the other way.

FiCO2 monitoring. RespiCOz measures the fraction of inspired carbon dioxide as well as the end-tidal value. FiCO2 should be near zero, and a rise indicates the patient is rebreathing exhaled CO2, most often because a soda lime absorber is exhausted or a one-way valve has failed. This is a circuit-level safety signal that a device reporting EtCO2 and respiratory rate alone cannot give you directly. See how soda lime affects the capnograph and what does high EtCO2 mean.

Warranty. A two-year device warranty and a one-year sensor warranty, against one year. Over the life of a device in daily use, that difference is real money and real downtime cover.

Local regulation and service. RespiCOz is CDSCO-approved and made in India, backed by a dedicated technical team rather than a distributor. For an Indian hospital that means service and spares are local, not subject to an import wait, and the manufacturer sits within India’s post-market surveillance framework. See is your capnograph CDSCO approved and warranty, service and support for medical devices in India.

Price. In the Indian market RespiCOz sits at ₹60,000 to ₹1,00,000 against roughly ₹1,20,000 for the EMMA. A large part of that gap is import duty, freight and currency mark-up rather than capability. See capnograph price in India.

The display question, honestly

This is the clearest genuine trade-off between the two, and it deserves a straight answer.

The EMMA shows everything on the device. That is simpler, needs nothing else, and is unarguably better where a phone is unavailable, impractical or unwelcome.

RespiCOz displays through a companion app. That gives a larger, higher-resolution view of the waveform than a small onboard OLED can, on a screen most clinicians already carry, and it opens the door to software updates and data handling that a fixed display cannot offer. The trade-off is that it requires a paired device to be present and charged.

Which is better depends entirely on where you work. For a pre-hospital responder carrying minimal kit, self-contained wins. For a hospital theatre, ICU or transfer team where a phone or tablet is always at hand, the larger display and platform approach has the advantage.

Be honest with yourself about which of those you are, and the choice becomes straightforward.

Which should you choose

Choose the Masimo EMMA if you need a fully self-contained device with an onboard display, you work in field or pre-hospital settings where a companion device is impractical, you need AAA battery replacement anywhere, or an established global brand with FDA approval is a procurement requirement.

Choose RespiCOz if you are buying in India and want CDSCO approval with local service and spares, you want FiCO2 monitoring for circuit safety in anaesthesia and intensive care, you want a longer warranty, or you want the same core mainstream capability without the imported-brand premium.

Either works for the fundamentals: confirming an endotracheal tube, monitoring ventilation continuously, and tracking EtCO2 during CPR and transport.

Where RespiCOz fits

RespiCOz is built for the Indian hospital that wants dedicated mainstream capnography without paying an import premium for it.

The sensor sits at the airway for a fast, direct reading with no sampling line to block and no water trap to fill. It shows the EtCO2 value, the waveform and FiCO2 together, so rebreathing is caught directly rather than inferred. It runs on battery and travels with the patient, from theatre to recovery, from intensive care to imaging, and into an ambulance.

It is CDSCO-approved, made in India, carries a two-year device warranty with a dedicated technical team and local spares, and is priced in the value middle at ₹60,000 to ₹1,00,000. Because it is a mainstream device, there are no sampling lines or water traps to buy again, which keeps the running cost low. See capnograph cost of ownership.

Like the EMMA, it is a focused monitor for airway-secured patients. A spontaneously breathing patient on a nasal cannula needs sidestream or microstream sampling instead.

For a wider comparison across portable devices, see the best handheld EtCO2 monitor guide.

Want to compare in your own setting? Request a quote or a demonstration here.

Frequently asked questions

Is RespiCOz a direct alternative to the Masimo EMMA? Yes, in category. Both are portable mainstream capnographs with no sampling line or water trap, both display a waveform, and both are intended for patients with a secured airway. They differ in display approach, parameters, warranty, origin and price.

Does the Masimo EMMA measure FiCO2? Its published specifications describe display of end-tidal CO2 and respiratory rate with a capnogram. RespiCOz additionally monitors FiCO2, the inspired carbon dioxide, which warns of rebreathing from an exhausted absorber or a failed valve.

Does RespiCOz have its own screen? RespiCOz displays the value and waveform through a companion app rather than an onboard screen. The EMMA has an integrated OLED display. Which suits you depends on whether a paired device is always practical in your setting.

Why is the Masimo EMMA more expensive in India? Largely because it is imported. Customs duty, freight and currency mark-up sit inside the price of any imported device, alongside the brand premium. A made-in-India device avoids that layer.

Which has better service support in India? That depends on your location and the distributor. RespiCOz is supported by a dedicated technical team in India with local spares. Imported devices are typically serviced through a distributor, which can mean longer waits for parts.

Conclusion

RespiCOz vs Masimo EMMA is not a contest between a good device and a poor one. Both are mainstream capnographs doing the same job on the same physics, and both do it well.

The EMMA is self-contained, rugged and runs on AAA batteries, which makes it excellent where nothing else can be relied on. RespiCOz adds FiCO2, a longer warranty, CDSCO approval with local service, and a materially lower price in India, at the cost of needing a companion device for the display.

Decide which of those constraints is yours, and the answer follows. If you are a pre-hospital service carrying minimal kit, the case for a self-contained device is strong. If you are an Indian hospital equipping theatres, intensive care and transfers, the case for local approval, local service and local pricing is stronger.

To pin down the right specification for your setting, start with what to look for when buying a portable capnograph.

Competitor specifications and prices in this comparison are drawn from publicly published information at the time of writing and are indicative only. They change. Verify current details directly with each manufacturer before purchase.