Tag Archives: Microelectronics

How Many Passes With a Cleanroom Wipe Will Get a Surface Clean and Sterile?

Cleanroom Wiping How Many Passes

Answer: Berkshire cannot provide specific recommendations regarding how many swipes/passes of a wiper on a surface will make the surface clean or free of microorganisms.The main reason for this is each situation where wipers are used is different and has many variables, each of which will have an impact on the outcome of any cleaning. [Read More…]

How Photon Sails Are Powering CubeSats Across the Final Frontier

How Photon Sails Are Powering CubeSats Across the Final Frontier

For readers who keep up to date with new issues in psychology (we know, but bear with us…) a recent discussion of megalophobia must have been of some interest. Megalophobia is a disorder defined as the fear of large objects, or objects that are perceived as being larger than they ‘should’ be. An example could [Read More…]

Lab-Grown Diamonds – HPHT – CVD

lab grown diamond, led, solar panel, semiconductor

Now that the poolside grill-fest that is Memorial Day is behind us, it’s time for a pop quiz to jolt us out of our carb-induced somnolence. So here’s a question: what do semiconductors, LEDs, solar panels, and diamonds have in common? Take a moment, we’ll be right here waiting… No, it’s not that they’re all [Read More…]

Apple’s A12 Bionic Chip Races Out of the Cleanroom!

old mobile vs new phones3

What do we talk about when we talk about Apple? Perhaps it is no longer surprising that the devices and consumables that most readily spring to mind when we hear of the 11th most profitable company in the world (behind a spill of oil producers, Warren Buffet’s Berkshire Hathaway, and the perennial love-to-hate behemoth, Walmart) [Read More…]

Cleanroom Technology at CES 2019

CES 2019 tv comparison

Perhaps no event is quite so synonymous with the art and science of innovation than the Consumer Electronics Show held annually in Las Vegas, NV. With a social media reach of over 50 million views and mentions, and 4,500 exhibitors catering to around 183,000 live, in-person attendees, the show that kicks off the year is [Read More…]

Haptics and Ultrahaptics

Haptics and Ultrahaptics

From Disney to Microsoft, NASA to MIT, corporations and institutions large and small are increasingly reviving their interest in haptic technologies, whether pursuing the edge on the next generation of smartphones, adding a piece into the puzzle of augmented reality, or engineering a robot hand that can both collect soil samples on Mars and play [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?*


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…]