Optical and condensation particle counters are the two main types of particle counters used for detecting and counting aerosol particles.Ā Conventional optical particle counters (OPCs) use light sample cells to detect, count, and measure airborne particles.
Why the USP 1788 update? New flow imaging technologies and therapeutic protein solutions widened the scope of USP 1788. Three primary technologies are discussed in each of the sub-parts of the guidance document: Light Obscuration (LO)Ā is still the preferred first-pass method for the USP Normative chapters. If a solution is…
Batch In Situ Particle Monitoring Batch In Situ Particle Monitoring offers a rapid and cost-effective requalification of wet process tools following chemical changes or filter replacement. In these applications, a particle counter is mounted on a cart and moved from one sample location to another. This mobile sampling approach maximizes…
Welcome to the world of liquid particle counting and syringe sampling… If youāre new to liquid particle counting, you might not know anything about how we know if liquids are clean. One method to determine a liquidās cleanliness is syringe sampling. Intro AĀ syringe samplerĀ represents the simplest delivery system for precisely…