Berkshire CH709.14, Choice 700, Polyester Knitted, Sealed Edge, Laundered, 9" x 9", Case of 2,100

The Berkshire Choice 700 is a 100% polyester knitted cleanroom wiper designed for ISO Class 3 through ISO Class 5 environments where low particle generation and chemical compatibility are critical. Unlike poly/cellulose nonwoven wipers, the Choice 700 is constructed entirely from continuous-filament polyester — a material that generates significantly fewer particles and fibers, making it the right choice for higher-classification cleanrooms where nonwoven wipers don’t meet contamination control requirements. Each wipe features an ultrasonically sealed edge that prevents fiber shedding at the perimeter, and is laundered in an ISO Class 4 cleanroom to ensure it arrives ready for use in your controlled environment.

MTE Solutions stocks the CH709.14 in cases of 2,100 sheets (150 wipes per pack, 14 packs per case). The 9" x 9" format is the standard workhorse size for cleanroom bench operations — large enough for general surface wiping, precise enough for equipment and component-level cleaning. Whether you’re maintaining a semiconductor fab, a medical device assembly area, or a pharmaceutical production suite, the Choice 700 delivers the particle performance and chemical resistance that ISO 3–5 environments demand.

Specifications

Frequently Asked Questions

What makes the Choice 700 different from a nonwoven poly/cellulose wiper?
The Choice 700 is 100% knitted polyester, which generates far fewer particles and fibers than a poly/cellulose nonwoven wiper like the Durx 670. It’s rated for ISO Class 3–5 environments, while nonwoven wipers are typically used in ISO Class 5–8. If your cleanroom classification is ISO 5 or higher, the Choice 700 is the appropriate choice.

What does “ultrasonically sealed edge” mean?
Ultrasonic sealing uses high-frequency vibration to fuse the polyester fibers at the wipe’s perimeter, creating a sealed edge that prevents fiber shedding during use. This is critical in high-classification cleanrooms where loose fibers are a contamination risk.

Is the Choice 700 laundered before shipping?
Yes. The CH709.14 is laundered in an ISO Class 4 cleanroom prior to packaging, which removes residual particles and ionic contamination from the manufacturing process. This ensures the wipe is ready for use in your controlled environment without additional preparation.

What ISO cleanroom class is the Choice 700 rated for?
The Choice 700 is rated for ISO Class 3 through ISO Class 5 environments (equivalent to Federal Standard 209E Class 1 through Class 100).

How many wipes come in a case of CH709.14?
Each case contains 2,100 wipes — 150 wipes per pack, 14 packs per case.

Can the Choice 700 be used with IPA or other solvents?
Yes. 100% polyester knitted wipers are highly compatible with isopropyl alcohol (IPA), acetone, and most common cleanroom solvents. Polyester’s chemical resistance makes it a preferred material for solvent wiping in high-classification environments.