controlled environment Archives

Allied Cleanrooms modular cleanroom interior with white wall panels, observation windows, LED lighting, and seamless flooring.

September 22, 2026

Cleanroom Certification vs. Validation: A Quick Overview

Cleanroom certification and validation are two terms that get confused a lot. They’re related, yet refer to different things. In this article, we’ll explain what each one means, how they differ, and where qualification fits in. What Is Cleanroom Certification? ...

Modular cleanroom by Allied Cleanrooms featuring a technician in full gowning operating a touchscreen interface. The space includes a stainless steel lyophilizer unit labeled "LY01" and an ultra-low temperature freezer labeled "FREEZER1" set to -79°C, all housed in a clean, controlled environment with integrated lighting and seamless finishes.

September 8, 2026

What Are Cleanroom Monitoring Systems? A Quick Overview

How do you actually know your cleanroom is working the way it should? Well, technically you find out on the day it gets certified. But what about every day after that? Cleanroom monitoring systems exist for this exact purpose. In this article, we’ll define what...

Allied Cleanrooms air handling unit system with large insulated ductwork installed in a cleanroom mechanical space

August 20, 2026

What Is Unidirectional Airflow in a Cleanroom?

How does the air actually move inside a cleanroom? It’s a question worth asking, as the answer affects everything from the cleanroom’s ISO classification to how much it costs to build. In this article, we’ll cover what unidirectional airflow is, how it differs fro...

Electric vehicle charging, powered by lithium batteries manufactured in cleanrooms

July 19, 2026

Lithium Battery Cleanrooms: What You Need to Know

Lithium battery manufacturing is one of the fastest growing industries in the world, given the rise of electric vehicles. It's also particularly demanding when it comes to controlled environments. While it is common for cleanrooms to control humidity to some extent, bat...

Cleanroom ceiling installation by Allied Cleanrooms with full glass wall panels

July 8, 2026

Cleanroom Ceiling Systems: A Short Guide

When it comes to cleanroom design, walls tend to get most of the attention. But most people don’t realize that it’s the ceiling, along with what goes in it, that does most of the work. In this article, we'll cover why that is, what the most common ceiling systems are, a...

Allied Cleanrooms modular cleanroom exterior with connected air handling equipment and insulated ductwork inside a warehouse facility

June 16, 2026

One-Pass vs. Recirculating Cleanrooms: What’s the Difference?

Every cleanroom filters air, but there are two ways of going about it. Which one you choose affects everything from cost to how much control you have over temperature and humidity. In this article, we'll explain the difference between one-pass and recirculating clean...

Aseptic cleanroom built by Allied Cleanrooms with gowned technician

May 18, 2026

What Are “Aseptic” Cleanrooms? A Short Guide

If you've been looking into cleanrooms for pharmaceutical manufacturing, or even medical devices, you may have come across the term "aseptic cleanroom.” Though not strictly a formal classification, the term has become a common way to refer to cleanrooms designed for ase...

Modular cleanroom by Allied Cleanrooms designed to control viable and non-viable particles

April 25, 2026

Viable vs. Non-Viable Particles in Cleanrooms

It should go without saying that not all particles in a cleanroom are the same, even though ISO standards may appear to treat them as such. Some are inert, like dust, while others are alive and capable of multiplying. Before building a cleanroom, it’s important to un...

April 16, 2026

Fan Filter Units vs. Air Handling Units for Cleanrooms

If you’re planning on building a cleanroom, one of the most important aspects of design is figuring out how the air will be filtered and moved through the space. The two common options are fan filter units (FFUs) and air handling units (AHUs). Both have the same purpose...

Cleanroom technician following cleanroom gowning procedures with gloves, mask, and full protective suit in a controlled environment by Allied Cleanrooms

April 9, 2026

Cleanroom Gowning Procedures: A Simple Guide

It is often said that the biggest source of contamination in any cleanroom is people. Even while standing still, a person sheds around 100,000 particles per minute. Now add walking, head scratching, and other kinds of movement, and the total is raised to several mill...

Empty modular cleanroom by Allied Cleanrooms ready for validation testing

March 24, 2026

Cleanroom Validation: A Simple Guide

Building a cleanroom is one thing, but proving it works is a different story. In this article, we'll cover what cleanroom validation is, the main qualification stages, what gets tested, and more. What Is Cleanroom Validation? Simply put, cleanroom validation is th...

Interior of an Allied Cleanrooms cleanroom with sealed wall panels, double doors, and windows into adjacent rooms for cleanroom pressure cascade airflow control

March 15, 2026

Cleanroom Pressure Cascades: What They Are and How They Work

You often hear it said that filters (HEPA/ULPA) are the “backbone” of cleanrooms. This isn’t necessarily wrong. However, filters on their own can only do so much. Even with the best filters in the world, if the air inside your cleanroom flows from a “dirtier” space i...

Tag: controlled environment