Alchemise Innovation

  Are Vacuum Pumps and Oven Extraction Systems Considered LEV? A Guide for Lab Managers If you work in a laboratory, manufacturing facility, or industrial setting, you’ve likely heard the term  LEV (Local Exhaust Ventilation)  thrown around during safety audits or facility planning. When you start installing specialized equipment like vacuum pumps, drying ovens, or industrial extractors, the question often arises:  "Is this piece of equipment considered LEV, or is it something else?" Understanding the classification is critical because your legal and safety obligations change depending on the answer. Let’s break down the definitions and clear up the confusion. What is LEV? At its core,  Local Exhaust Ventilation (LEV)  is an engineering control system designed to capture dust, fumes, vapors, or gases at their source  before  they can spread into the general workspace or be inhaled by the operator. Common examples include: Fume cupboards (fume hood...

  Maintaining Excellence: Navigating Class 5 Cleanrooms and LEV Requirements in the UK In high-stakes industries like pharmaceuticals, medical device manufacturing, and semiconductor production, precision is everything. When your environment is defined by particle counts, the margin for error is non-existent. If you are operating a  Class 5 Cleanroom  (as defined by ISO 14644-1), you are working at the pinnacle of environmental control. To maintain this status, you must master the integration of  Local Extract Ventilation (LEV) . In this post, we’ll explore what LEV is, why it is critical for your classification, and the stringent UK legal requirements you must meet. What is LEV? Local Extract Ventilation (LEV)  is an engineering control system designed to reduce or eliminate exposure to airborne contaminants—such as dust, mist, fume, vapour, or gas—at the source. Unlike general room ventilation (which dilutes contaminants), LEV captures them before they enter t...

  The Hidden Threat: Why Your Class 5 Cleanroom’s Integrity is at Risk with Glovebox Integration In the pursuit of ultra-precision manufacturing and pharmaceutical excellence, the ISO Class 5 cleanroom is the gold standard. With fewer than 3,520 particles (≥ 0.5 μm) per cubic meter, this environment is designed for maximum control. However, a common practice in high-stakes facilities—placing a glovebox (isolator) within a Class 5 space—creates a paradox. While the glovebox is designed for containment, its physical presence and operational requirements can paradoxically jeopardize the very integrity of the cleanroom that surrounds it. If your facility relies on this configuration, here is why your cleanroom’s integrity might be at risk—and how to manage it. 1. The "Dead Zone" Effect: Airflow Disruption Class 5 cleanrooms rely on laminar (unidirectional) airflow to "sweep" particles away from critical work surfaces. When you introduce a bulky glovebox, you are essenti...

  Inside the Ultra‑Clean Zone: What It Takes to Keep a Class 5 Cleanroom Spotless Posted on May 8 2026 • By Dr Michael Cooke, Cleanroom Consultant & Technical Writer When you walk into a  Class 5 cleanroom  (also known as ISO Class 5 or Federal Standard 100), you’re stepping into an environment where the air is literally cleaner than a hospital operating theater. One stray particle can ruin a semiconductor wafer, a biotech assay, or a high‑precision optical component. The secret to keeping that pristine atmosphere isn’t just “good luck”—it’s a tightly woven tapestry of  measurement, cleaning, and personal protective equipment (PPE) protocols . In this post we’ll break down: How Cleanroom Performance Is Measured What a Robust Cleaning Regime Looks Like The Minimal Acceptable Levels for PPE, Suits, and Allowed Items Whether you’re a facilities manager, a quality‑engineer, or just curious about how the world of nanotechnology stays particle‑free, read on for a pract...

The Invisible Enemy: Why Class 5 Cleanrooms Demand Uncompromising Discipline In industries like semiconductor manufacturing, pharmaceuticals, and nanotechnology, the difference between a successful product and a catastrophic failure is often measured in microns. For those operating within a  Class 5 cleanroom  (ISO 5), there is no room for "good enough." A Class 5 environment is an ultra-pure space, restricted to a maximum of 3,520 particles (0.5µm or larger) per cubic meter. To put that in perspective, a typical office environment contains millions of particles per cubic meter. When you are working at this level of precision, you aren’t just monitoring your work; you are effectively at war with the atmosphere itself. Here is why strict, unwavering adherence to protocol isn’t just a suggestion—it is the lifeblood of a Class 5 operation. 1. The Human Factor: Your Greatest Asset and Largest Contaminant The human body is an amazing machine, but it is also a particle-shedding fac...