Berkshire CH909.10, Choice 900, Polyester Knitted, Sealed Edge, Laundered, 9" x 9", Case of 1,500
Berkshire CH909.10, Choice 900, Polyester Knitted, Sealed Edge, Laundered, 9" x 9", Case of 1,500
The Berkshire Choice 900 is a premium 100% polyester knitted cleanroom wiper representing the top tier of the Berkshire Choice series. Designed for the most demanding ISO Class 3 through ISO Class 5 environments, the Choice 900 is laundered in an ISO Class 3 cleanroom — one classification level above the Choice 700 — and features an ultrasonically sealed edge to prevent fiber shedding at the perimeter. The result is a wiper with exceptional particle performance and ionic cleanliness, suited for semiconductor fabrication, advanced optics, life sciences research, and other applications where contamination control requirements are at their most stringent.
MTE Solutions stocks the CH909.10 in cases of 1,500 sheets (150 wipes per pack, 10 packs per case). The 9" x 9" format is the standard workhorse size for cleanroom bench operations. If your process demands the highest level of cleanliness available in a Berkshire knitted polyester wiper, the Choice 900 is the appropriate specification. For applications where ISO Class 4–8 performance is sufficient, see the Choice 700 (CH709.14) or Choice 800 (CH809.10) for cost-effective alternatives.
Specifications
| Attribute | Detail |
|---|---|
| Part Number | CH909.10 |
| Brand | Berkshire |
| Series | Choice 900 |
| Size | 9 in x 9 in |
| Material | 100% Polyester (Continuous-Filament Knitted) |
| Edge Treatment | Ultrasonically Sealed |
| Laundering | Laundered in ISO Class 3 Cleanroom |
| ISO Classification | ISO Class 3 – ISO Class 5 (Class 1 – Class 100) |
| Pack Quantity | 150 wipes per pack |
| Case Quantity | 1,500 sheets (10 packs) |
| Wipe Type | Dry |
| Application | Semiconductor fab, advanced optics, life sciences, ISO Class 3–5 critical environments |
Frequently Asked Questions
What is the difference between the Choice 900 and the Choice 700?
Both are 100% polyester knitted wipers with ultrasonically sealed edges, but the Choice 900 is laundered in an ISO Class 3 cleanroom versus ISO Class 4 for the Choice 700. This means the Choice 900 arrives with a higher level of ionic and particulate cleanliness, making it the right choice for the most critical ISO Class 3–5 applications. The Choice 700 is appropriate for most ISO Class 4–5 environments at a lower cost.
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.
What ISO cleanroom class is the Choice 900 rated for?
The Choice 900 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 CH909.10?
Each case contains 1,500 wipes — 150 wipes per pack, 10 packs per case.
Can the Choice 900 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.
When should I choose the Choice 900 over the Choice 700?
Choose the CH909.10 when your process validation, SOP, or customer specification requires ISO Class 3 laundering. If ISO Class 4 laundering meets your requirements, the Choice 700 (CH709.14) offers equivalent construction at a lower price point.
