Westech Scientific Instruments (Westech) products

The Westech 7 (W7) is Westech’s version of the Next Generation Impactor (NGI), a Seven Stage Cascade Impactor with Micro-Orifice Collector conforming to all the critical dimensions defined for USP Apparatus 5 & 6 and EP Apparatus E. The W7 is a multi-jet impactor with 8 removable collection cups and a convenient single tray design with operating flowrates between 15 and 100 L/min.

The Dosage Unit Sampling App. DUSA-MDI has been designed from specifications laid down in the various pharmacopoeia for the sampling and testing of pressurised Metered Dose Inhalers. It is used to perform those tests specified by the relevant compendial standards – “Total Number of Dis-charges per Container or Inhaler”, “Dose Uni-formity” and “Dose Uniformity Over the Entire Contents” as well as those tests designed to simulate the performance of the inhaler during actual use.

Specifically designed for the larger laboratory, the Automated Plate Coater from Novi is capable of processing over 1000 Andersen Impactor collection plates per day with excellent consistency relieving analysts and technicians from time-consuming and inefficient manual coating, improving on both the productivity and the throughput of the more traditional approach. The Automated Plate Coater from Novi can be modified to take NGI cups.

For inhalers containing multiple doses, a test for dose content uniformity over the entire contents is required. The test also measures total discharges claimed by the product label. The sample collection system utilised is the Dosage Unit Sampling Apparatus (DUSA) collection tube. Primary parts include a fine particulate filter holder, main chamber with side pressure tap, end cap sets (solid and with vacuum hose connector), gasket seals and an inlet to hold the preferred mouth piece adaptor. Popular closures techniques include the quick turn bayonet-style or screw-style cap. Custom designs available while following critical guidelines. Material options: Delrin or Teflon.

The 8-stage Andersen Cascade Impactor (ACI) is the most frequently used instrument for the testing of inhaler products within the Pharmaceutical Sector. Westech ACIs are specifically designed to meet the highest criteria laid down in the various.

ICTUS is a proven, dedicated system for the complete automation of Andersen Impactors capable of testing up to 30 inhalers in 24 hours.

Designed specifically to improve efficiency, consistency and performance in inhaler testing laboratories, the semi-automated plate coater for Andersen Impactors from Novi coats plates as you wait. This plate coater can be modified to take NGI cups.

ClimateZone Containment Cabinets provide a safe climatically controlled temperature and humidity environment for pharmaceutical drug sample testing and are ideal for practically any application. The Pharmaceutical Industry deals with both potent and sensitive drug compounds on a daily basis which means they have a high dependency on good facility design to ensure operator protection from exposure to drug compounds. Furthermore, maintaining a comfortable, stable and safe room environment is difficult to achieve within a laboratory because there is a high rate of air exchange. A significant volume of external air must be treated, circulated and then exhausted into the atmosphere every few minutes. The ClimateZone addresses these issues.

During the use of Dry Powder Inhalers (DPI’s) the emitted and fine particle dose are affected by the strength and duration of the patient’s inspiration particulalry noticeable in the lederly and in small children. Furthermore, different inhaler designs provide various degrees of resistance to inhalation.

The Digital Flow Meter has been especially designed for use with the instrumentation employed in testing pharmaceutical inhalers. Main features of the DFM are: highly visible digital LED readout direct in litres/ minute, printer port and range 20-120 litres/minute. Full calibration certificate supplied with each unit.