Berkshire’s Guide to properly fold and use a low-linting wiper for maximum efficiency and effectiveness in a controlled environment. Download our Cleanroom Proper Wiper Folding and Surface Cleaning Poster Today! Shop our Cleanroom Wipes
HEPA VS. ULPA IN A CLEANROOM 1. This large circle represents the cross section of a human hair, with an average visible diameter of 75μm. 2. This smaller circle, still visible to the human eye, represents a 50μm diameter particle. 3. This represents a 0.3μm diameter particle. HEPA filters remove over 99.97% 4. This represents [Read More…]
Your toast lands jelly side down on the floor. Could there be a more dramatic example of the contact transfer phenomenon described in “Particles on Surfaces 103”? You have no difficulty seeing the transfer of jelly to the floor and you can easily imagine that there is a simultaneous transfer of floor bacteria onto the [Read More…]
In the Worlds Fair Exposition of 1893, one young entrepreneur, Clark Stanley, stood before an excited crowd of onlookers and plunged his hand into a sack of live rattlesnakes. Pulling out an unfortunate herpetological victim, he sliced it open and, in a technique that was about as far from aseptic processing and devoid of microbial [Read More…]
Introduction Pharmaceutical and medical device manufacturing personnel must cope with endotoxins – a contamination source unique to their industries. Endotoxins, also known as pyrogens, originate from dead (!) gram negative bacteria. When this strain of bacteria are killed by antibacterial reagents (say phenolic or quaternary ammonium compounds), radiation, steam sterilization, etc. the cell wall detritus [Read More…]
Reproduction used to be simple. Boy meets girl. Egg meets sperm. Nine months, one baby shower, and a whole lot of trips to Buy Buy Baby later, a new addition arrives to much billing and cooing by the proud grandparents. Oh those halcyon days. Today, the landscape is so much more nuanced as advances in [Read More…]
We have a riddle for you: what is both ancient and futuristic, biodegradable and naturally sustainable, is delicately engineered in a cleanroom with a tensile strength five times that of steel, is a simple formulation but has applications in materials science, medicine, and reforestation? Need some more clues? It is edible, reintegrating into the human [Read More…]
Disinfection of Surfaces with Hydrogen Peroxide Of all the contamination control activities in a cleanroom, perhaps the most critical are disinfection procedures. That’s because human health depends on the quality and thoroughness of a surface disinfection wipedown. Many solutions can be considered for surface disinfection, but hydrogen peroxide and sodium hypochlorite (bleach) rate special attention. [Read More…]
A previous article in this series discussed disinfection of surfaces with hydrogen peroxide. We turn our attention now to bleach as another very effective treatment agent. Most people understand that ordinary household bleach – a 5.5% solution of sodium hypochlorite (NaOCl) in water – is a strong disinfecting agent. In neutral or slightly acidic solutions the active [Read More…]
The EasyClean® 360 is the most efficient way to clean a laminar flow hood. It’s unique triangular shaped head allows it to clean the difficult tight corners in the hood. The tool is delivered with two handles, a 14” (35cm) and 24” (61cm). There is also another ordering option for a telescoping handle that will extend from 35 [Read More…]
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