LabExact
Nitrogen-Free Cellulose Weighing Paper, 4x4 inch, Analytical Grade, High-Gloss, 500/Pk SKU: LE-W44

Featuring analytical purity grade cellulose construction designed for conveying powder or gelatinous paste samples to and from balances and instruments, this nitrogen-free weighing paper delivers exceptional sample transfer accuracy for critical laboratory applications. Highly calendared surface (non-treated gloss) achieves smoothness that resists sample hold or moisture absorption, while sufficient structural integrity resists tearing during quadrant folding or enveloping. Material chemistries are verified against a standard prior to paper-making process, ensuring lot-to-lot reproducibility for consistent analytical results across extended laboratory operations.

Key Cellulose Material Characteristics

• High-gloss, milk-white paper is semi-opaque, non-absorbent, and nitrogen-free for contamination-free analytical weighing
• Smooth medium gloss surface ideal for transferring weighed material with excellent sample recovery
• Nitrogen-free composition enables accurate chemical analysis with very smooth surface and good sample recovery
• Strong enough to support high-density materials while maintaining lightweight handling characteristics
• Clean, dust-free sheets eliminate contamination risks in sensitive analytical protocols

Key Construction Characteristics

• Increases abrasion durability during spatula scraping while maintaining surface integrity throughout use
• 4 × 4 inch (10.16 × 10.16 cm) squares accommodate standard analytical balance requirements
• Allows samples to be transferred to scales without adding unwanted substances that could impact analytical results
• Shiny pergamyne paper allows visual determination that all sample has been removed for complete transfer verification
• 500 sheets per package provide extended laboratory supply for high-volume analytical operations

LE-W44 weighing papers maximize your analytical precision through exceptional tear resistance and moisture barrier properties, accelerating your sample preparation workflows while maintaining validated analytical integrity. Additional applications include slip sheets between samples or slides, short-term exposure as a moisture barrier, liners within containers, or laminating backing for structural support. Laboratory weighing papers enable accurate chemical analysis for a variety of weighing applications, delivering reliable performance for pharmaceutical, environmental, and research laboratories requiring contamination-free sample handling with superior lot-to-lot consistency.

Dimensions

4in x 4in

Material

Cellulose

Pack Count

500

Sterility

Nonsterile

Weight

0.562

Whatman Equivalent

10347672