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Multi-stage Cascade Impactor (NGI)

Application

Particle size graded capturing of inhaler aerosols.

Testing of drug aerosol settlement distribution in the artificial lung.

TEL86-10-56370031

Description

Features

Specification

Standards

Video

Specially designed for aerodynamic characteristic determination of inhaled fine particles, multi-stage cascade impactor consists of smart pump, pressure detector, cascade impactor, pre-separator (DPIs), induction port and accessories. It complies with instrument qualifications of aerodynamic characteristic determination of inhaled fine particles in USP, Ph.Eur. and ChP 2020. 

Contain 7-stage impactors and micro-orifice collector (MOC), easy to open, retrieve samples from collection cups and prepare for next test.

With 8 removable collection cups, for easy cleaning and replacement.

Used for APSD and DDU testing for MDIs/DPIs/Nebulizers. Powder can be tested with a pre-separator, effectively removing coarse particles of 10-15 microns.

The collection cup is the impact surface placed on a tray which could facilitate sampling and directly under nozzles. Tray facilitates efficient sample collection.

 

Stage

Nozzle Diameter (mm)

Cutting Diameter (μm)

15L/min

30L/min

60L/min

100L/min

Stage 1

14.30±0.05

14.10

11.76

8.06

6.12

Stage 2

4.88±0.04

8.61

6.40

4.46

3.42

Stage 3

2.185±0.02

5.39

3.99

2.82

2.18

Stage 4

2.185±0.02

3.30

2.30

1.66

1.31

Stage 5

0.608±0.01

2.08

1.36

0.94

0.72

Stage 6

0.323±0.01

1.36

0.83

0.55

0.40

Stage 7

0.206±0.01

0.98

0.54

0.34

0.24

Micro-orifice collection (MOC)

about 0.070

0.70

0.36

0.14

0.07

 USP, Ph.Eur. and ChP 2020

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