The Rossmax NB500 nebulizer uses a piston compressor and a patented adjustable VAT valve, which allows the nebulization rate to be adjusted from 0.15 to 0.40 ml/min without changing any parts. VAT technology maintains a consistent particle size, while the valve adapts to the user's condition and needs. Its low noise level is supported by a silencer design that absorbs vibrations.

The higher setting is intended for higher-viscosity medications and users with greater respiratory capacity, while the lower setting is suitable for infants and children. It includes a mouthpiece and masks for adults and children, as well as a built-in nebulizer holder. VAT technology is recommended for respiratory conditions such as chronic obstructive pulmonary disease (COPD) and asthma, as well as for intensive use.

• Nebulization technology: Piston
• Valve technology: VAT with adjustable nebulization rate
• Nebulization rate: 0.15–0.40 ml/min
• MMAD: ≤2.2 μm
• Fine particle dose (FPD): 80–85%
• Noise level: Low
• Use: For infants and adults
• Package contents: Mouthpiece and masks for adults and children
• Nebulizer holder: Built-in