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Light Scattering Spectrometer Technical parameters
- Measurement range: 0.2 – 40 µm Cn ≤ 107 P/cm3
- Temporal resolution up to 10 ms
- Volume flow adjustment according to the European pharmacopeia: 15 l/min (nebulizers)30 l/min (MDI) variable flow rate with differential pressure of 4 kPa (DPI) adjustable up to 100 l/min
- Power supply: 115/230 V; 50/60 Hz
Inas® is the only measuring device worldwide which can determine particle sizes and particle quantities in concentrations up to 107 P/cm3 by means of a countable measuring procedure and additionally offers a temporal resolution by which transient processes can be resolved in milliseconds` time.
With Inas®, the duration of a spray burst measurement including the completed data evaluation is being reduced on the duration of the spray burst.
Inas® has been developed by Palas® in co-operation with the Christian-Albrechts-University in Kiel/Germany, Pharmaceutical Institute under direction of Prof. Dr. Hartwig Steckel.
Here, also the good correlation of the measurement results to conventional measurement devices as the NGI was proven.
["Entwicklung von Aufgabesystemen zur Charakterisierung pharmazeutischer Aerosole mit einem optischen Partikelzähler", Maren Kuhli, Dissertation at the Faculty of Mathematics and Natural Sciences of the Christian-Albrechts-University in Kiel] Inas® is an optical light-scattering spectrometer with integrated dilution unit for the temporally resolved characterization of spray bursts and aerosols in concentrations up to 107 P/cm3. It can be operated with variable suction volume flows from up to 100 l/min.
Furthermore, the Inas®measurement technology provides a high-capacity processor which makes it possible to resolve the process of a measurement regarding concentration and other statistical distribution parameters like e. g. Sauter diameter with up to 10 ms. Inas® is therefore suited for the characterization of spray bursts, nebulizers and pharmaceutical inhalers like MDIs („Meter Dose Inhaler) or DPIs („Dry Powder Inhaler“) in the diameter range of 0.2 – 40 µm.
The optical measurement technology of Inas is based on the measurement technology of the welas® digital system with best particle size resolution and size classification accuracy. The evaluation of the measured data for the determination of particle size distributions is exclusively based on unambigeous, mathematically reproducible processes. Application examples
- Characterization of nozzles for sprays and nebulizers
- Characterization of inhalational aerosols according to European pharmacopeia with 15 l/min (nebulizer), 30 l/min (MDI) or variable flow rate with differential pressure of 4 kPa (DPI)
- Production control of spray and nebulizer systems
Particular advantages
- Largest measurement range 0.2 – 40 µm (3 measurement ranges in one device)
- Very high temprally resolved particle size and particle quantity determination with up to 10 ms
- Largest concentration range up to 107 P/cm3
- Characterization of a single spray burst in a few seconds
- Fast determination of size distributions and concentrations
- Calibration, cleaning and lamp exchange can be accomplished by the customer himself
- Comprehensive, practice-oriented, user-friendly software
- Low maintenance
- Easy handling
- Reliable function
- Reduces your operating expenses
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