Category Archives: Knowledge Base

Has Berkshire or a 3rd Party Performed Any Microbial Efficacy/kill Studies on the Satpax® Line of Presaturated IPA Wipers?

Satpax Canister

Question: Has Berkshire or a 3rd party performed any microbial efficacy/kill studies on the SatPax® line of presaturated IPA wipers? Answer: An efficacy/kill study has not been performed by Berkshire or a 3rd party lab for SatPax®.  Because of the number of variables involved when using wipes, it would be very difficult to produce meaningful [Read More…]

I Can See Clearly Now Part III

MPNW_photo_zoom

Figure 1.  Randomly dispersed ultra-fine polyester strands within a non-woven microfiber wiper. In their pursuit of superior materials, textile scientists have been able to engineer a new type of nonwoven microfiber fabric.  Traditional microfiber materials are comprised of very fine threads of polyester or polyester and nylon in which wedge-shaped strands are held within a [Read More…]

Does Berkshire Have a Wipe That Meets Aircraft – Aerospace AMS 3819 Requirements?

aircraft engine

Does Berkshire have a wipe that meets aircraft – aerospace AMS 3819 requirements? Cloths, Cleaning, for Aircraft Primary and Secondary Structural Surfaces Durx® 670, a dry nonwoven wipe, meets AMS 3819 requirements, Class 2, Form 1 SatPax® 670, a presaturated nonwoven wipe, meets AMS 3819 requirements, Class 2, Form 2 MicroSeal SuperSorb®, a polyester wipe, [Read More…]

Human-Generated Particle Contamination

particle contamination

CLEANROOM PERSONNEL Cleanroom garments cannot contain all human detritus Particles (µm) travel up through the garments toward the head Particles (µm) fall down the legs during activity Gowning SOPs and continuous training is crucial  

Proper Wiper Folding and Surface Cleaning Video

Cleanroom Wiper folding

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

How Small is a Micron?*

how_small-is-a-micron

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…]

Contact Transfer Revisited

red toast jelly floor

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…]

Endotoxins: A Danger to Pharmaceutical & Medical Device Manufacturing Industries

Bacteria low endo

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…]

Are the Wiper Clips on the Ergonomic Cleanroom Flat Mop System Autoclavable?

mop-clips

The yellow wiper clips are not autoclavable, but since they are detachable, simply remove them before autoclaving. All other components of the Ergonomic “V Mop” system are autoclavable.  The V shape allows it to slip smoothly into the pouches of the mop covers reducing bending and decreasing injury.  

Is There a Blue Cleanroom Wipe?

blusorb -blue wipe

Q: Is there a blue cleanroom wipe?   A: Berkshire BluSorb® 750 is a 55% cellulose/45% polyester hydroentangled nonwoven blue cleanroom wipe. It is an excellent choice for a work surface mat as its blue color provides the background differentiation necessary for visual inspection applications. It has low extractable levels and particle counts. BluSorb® 750 is chemically compatible with [Read More…]