Heavy-duty reclosable bags with integrated white write-on block for easy sample identification and labeling. These 9" x 12" reclosable bags combine the convenience of a zipper closure with a permanent white block writing surface, making them ideal for laboratories, medical facilities, quality control departments, and evidence collection. The white block accepts both pen and marker, providing a clear labeling area that won't smudge or fade during handling and storage. Constructed from 4 mil low-density polyethylene (LDPE), these bags offer superior puncture resistance and flexibility compared to standard 2 mil bags. The reinforced side-welded zipper closure locks securely in one smooth motion, preventing accidental opening during transport or storage. Made from 100% virgin LDPE resin that meets FDA and USDA specifications for food-contact applications, these bags are safe for storing samples, specimens, and consumable items. Key Benefits: White write-on block for permanent labeling with pen or marker 4 mil heavy-duty construction resists tears and punctures Side-welded zipper creates airtight, secure closure FDA-compliant LDPE safe for food contact and medical use Superior clarity allows easy visual inspection of contents Economical alternative to specialized specimen bags Specifications: 9" x 12" | 4 mil | LDPE | 1000/box | White write-on block | Reclosable zipper Common Applications: Laboratory sample collection and storage | Medical specimen packaging | Pharmaceutical dispensing and inventory | Quality control sampling | Evidence collection and chain of custody | Parts identification and inventory control | Food service portion packaging with labeling What are white block reclosable bags? White block reclosable bags feature a permanent white panel printed directly on the bag surface that accepts pen or marker for labeling. This eliminates the need for adhesive labels and provides a dedicated writing area for sample identification, lot numbers, dates, or other critical information. Why use 4 mil bags instead of 2 mil? Four mil bags offer twice the thickness of standard 2 mil bags, providing significantly better puncture resistance and durability for heavier items, sharp objects, or samples that require extra protection during handling and transport. The added thickness also improves the bag's ability to maintain closure integrity over time. Are these bags safe for food contact? Yes, these bags are manufactured from 100% virgin low-density polyethylene (LDPE) resin that meets FDA and USDA specifications for food-contact applications. They are suitable for storing food samples, portion control, and direct food contact in commercial and institutional settings.

Brand: NFC Bags
SKU: 4020A
Price: 117.24 USD
Availability: InStock

White Block 4 mil 9" x 12" x 4 mil WWO 1000/Box

Product Details

Brand: NFC Bags

Gauge: 4

Width: 12

Film Type: Recyclable LDPE

White Block 4 mil 9" x 12" x 4 mil WWO 1000/Box

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