Berkshire DR670.0404.40 Durx 670 4" x 4" Nonwoven Wipes, Qty 12,000 Sheets

The Berkshire Durx® 670 is a hydroentangled poly/cellulose nonwoven wiper engineered for ISO Class 5 through ISO Class 8 cleanroom environments. Constructed from 55% cellulose and 45% polyester, the Durx 670 delivers a balance of absorbency and low particulate generation that makes it a reliable choice for general-purpose surface wiping, equipment cleaning, and process spill control across electronics manufacturing, pharmaceutical production, and medical device assembly. Each wipe is manufactured without binders or surfactants, reducing the risk of ionic contamination on sensitive surfaces. The 4" x 4" format is ideal for precision cleaning tasks — component-level wiping, tight-clearance surfaces, and bench work where a larger wipe would be unwieldy.

MTE Solutions stocks the DR670.0404.40 in cases of 12,000 sheets (300 wipes per pack, 40 packs per case), making it a high-volume option for facilities with frequent small-format wiping needs. Whether you're cleaning solder joints, wiping optical components, or maintaining tight-tolerance assemblies, the 4" x 4" Durx 670 gives you the control of a small wipe with the reliability of a proven cleanroom material.

Specifications

Frequently Asked Questions

What is the Berkshire Durx 670 made of?
The Durx 670 is a hydroentangled nonwoven wiper made from 55% cellulose and 45% polyester. This poly/cellulose blend provides good absorbency from the cellulose component and low particle generation from the polyester component.

What ISO cleanroom class is the Durx 670 rated for?
The Durx 670 is suitable for ISO Class 5 through ISO Class 8 environments (equivalent to Federal Standard 209E Class 100 through Class 100,000).

Does the Durx 670 contain binders or surfactants?
No. The Durx 670 is manufactured without binders or surfactants, which reduces the risk of ionic contamination on sensitive surfaces and substrates.

What is the difference between the Durx 670 and a knitted polyester wiper?
The Durx 670 is a nonwoven poly/cellulose wiper, which offers higher absorbency than a 100% knitted polyester wiper. Knitted polyester wipers (such as the Berkshire Choice 700 or Super Polx 1200) generate fewer particles and are preferred for higher-class environments (ISO 4–5), while the Durx 670 is optimized for ISO 5–8 general-purpose use.

How many wipes come in a case of DR670.0404.40?
Each case contains 12,000 wipes — 300 wipes per pack, 40 packs per case.

Can the Durx 670 be used with IPA or other solvents?
Yes. The Durx 670 is compatible with isopropyl alcohol (IPA) and most common cleanroom solvents. For pre-saturated IPA wipes, see the Berkshire SatPax series.