The Complete Guide to A4 Paper Specifications and Quality Standards
Understanding A4 Paper Specifications
A4 paper specifications are standardized internationally, making it the most widely used paper size worldwide. The A4 format measures exactly 210 × 297 millimeters or 8.27 × 11.7 inches, providing an ideal balance between usability and efficiency.
Key A4 Paper Specifications
- Dimensions: 210 × 297 mm (8.27 × 11.7 inches)
- Weight Range: 70gsm to 120gsm for standard office use
- Brightness: 88-96 CIE brightness rating
- Opacity: 94% or higher for professional printing
- Thickness: 0.1mm to 0.15mm depending on weight
Quality Standards and Certifications
When purchasing A4 paper wholesale, understanding quality certifications is crucial. Look for papers with FSC (Forest Stewardship Council) certification, which ensures sustainable forest management. ISO 9001 certification indicates consistent quality management systems.
Paper Weight and Its Impact
Paper weight, measured in grams per square meter (gsm), significantly affects performance and cost. Standard copy paper typically weighs 80gsm, while premium papers range from 90-120gsm. Higher weight papers offer better opacity and durability but cost more.
Brightness and Whiteness Standards
Brightness measures how much light paper reflects, with higher numbers indicating brighter paper. Professional documents typically require 92+ brightness for optimal print quality. Whiteness affects color reproduction and overall document appearance.
Choosing the Right A4 Paper for Your Needs
For wholesale buyers, matching paper specifications to intended use is essential. High-volume copying requires durable 80gsm paper, while presentations benefit from 100gsm premium paper. Consider your printing equipment compatibility when selecting paper specifications.