| Product class as per Directive 93/42/EEC: | lla |
| Dimensions (W x H x D) | 170 x 135 x 180 mm |
| Weight | about 1.4 kg |
| Temperature range | |
| Operation: | +5 °C to +40 °C |
| Storage: | -25 °C to +70 °C |
| Permitted humidity, operation and storage | rel. humidity 15 % to 93 %, no condensation |
| Air pressure range | 700 – 1060 hPa coresponds to altitude of 3000 meters |
| Diameter of breathing tube connection (mask) | 19.5 mm (fits standard tapered connector |
| Electric rating | max. 40 VA |
| System interface | 12 V DC max. 10 VA |
| Power consumption in | 230 V 115 V |
| Operation (therapy): | 0.11 A 0.22 A |
| Standby: | 0.036 A 0.019 A |
| Classification as per EN 60601-1-11 | |
| Type of protection from electric shock | Protection class II |
| Level of protection from electric shock: | Type BF |
| Protection from damaging ingress of water and solids: | IP21 |
| Alarms | severe leakage, disconnection (tube), long apnea, low minute volume, low tidal volume |
| Modes | CPAP, APAP, S, S/T, T, autoS/T, aPCV |
| Mean sound pressure/Operation as per ISO 80601-2-70 | about 26.5 dB(A) at 10 hPa (corresponds to sound pressure of 34.5 dB(A) |
| CPAP operating pressure range | 4 to 20 hPa |
| BILevel operating pressure range | 4 to 30 hPa |
| Relative inspiration time Ti/Tset | 25% to 67% |
| Trigger Inspiration (Trigger IN) | auto or can be set at 3 levels |
| Trigger Expiration (Trigger EX) | auto or can be set at 3 levels |
| Pressure rise (Ramp IN) | can be set at 4 levels |
| Pressure reduction (Ramp EX) | can be set at 3 levels |
| Back up frequency | 0; 6 to 35 bpm |
| Adjustable target volume | can be set in 3 speed levels |
| Pressure accuracy | |
| Peak flow as per ISO 80601-2-70, modes BI level, without humidifier | |
| 4.0 hPa | 235 l/min |
| 10.5 hPa | 225 l/min |
| 17.0 hPa | 215 l/min |
| 23.5 hPa | 200 l/min |
| 25.0 hPa | 195 l/min |
| Stability of the dynamic pressure (short-term accuracy) for 10 breaths/min as per ISO 17510-1:2007 when using the 19 mm hose. | |
| 7.0 hPa | Δp≤0.24 hPa |
| 10.0 hPa | Δp≤0.28 hPa |
| 13.5 hPa | Δp≤0.3 hPa |
| 20.0 hPa | Δp≤0.4 hPa |
BI Level ST therapy device with adjustable target volume
prisma3OST: Strong ventilation with the comfort of sleep therapy






Dr. Priya Narayanan, Pulmonologist –
Clinically reliable for chronic respiratory failure.
Prima 30ST delivers stable IPAP/EPAP with excellent synchronization. I recommend it for COPD, OHS, and long-term home NIV. The machine’s trigger sensitivity and ST mode make it ideal for consistent night-time ventilation.
Dr. Hari Kumar, Chest Physician –
Excellent choice for long-term BiPAP therapy.The Prisma series from Löwenstein is known for precision and durability. I prefer the 30ST for patients who need assured backup rate support. Feedback from my patients using Srivari Healthcare has been positive and consistent.
Srivari –
Thankyou sir
Ravi K., Chennai –
Breathing became easier from Day 1
I was struggling with COPD and constant breathlessness at night. After switching to the Prisma 30ST BiPAP from Srivari Healthcare, my sleep quality improved within a week. The machine is quiet, the pressure feels smooth, and I wake up with more energy.
Vijay Kumar –
Helpful for my father’s COPD condition. My father sleeps peacefully now. Prisma 30ST adjusts well to his breathing and the noise is very low. Srivari Healthcare guided us step by step
S. Meenakshi, Bangalore –
Very comfortable and stable therapy.! I had used another BiPAP earlier, but the therapy was not consistent. Prisma 30ST maintains the right pressure even during difficult breathing hours. My morning headaches reduced completely.
Dr. Anitha M., Respiratory Therapist –
Safe and easy for patients after discharge. After ICU discharge, many patients need dependable NIV. Prisma 30ST offers stable therapy, clear alarms, and good patient-device synchrony. Srivari team provides proper demo and after-sales support which helps in adherence.