Overview

The Cobb Sizing Tester with Self-Starting Timer from QGI is a precision laboratory testing instrument designed to determine the water absorbency of paper, cardboard, and corrugated board. The equipment measures the amount of water absorbed by a material surface within a specific time period, helping manufacturers evaluate the surface sizing and water resistance properties of paper products.

This tester plays a critical role in the paper, packaging, printing, and corrugated box industries, where controlling the water absorption characteristics of materials is essential to ensure printability, strength, and packaging durability.

The self-starting timer mechanism automatically begins the test cycle once the water comes in contact with the test specimen, ensuring accurate and repeatable results with minimal operator intervention.

Key Features: Self-Starting Timer Mechanism

The tester is equipped with an automatic self-starting timer, which begins the testing cycle as soon as the water is introduced to the sample. This feature ensures precise timing and consistent test results.

Accurate Water Absorption Measurement: The Cobb tester measures the quantity of water absorbed by the test specimen per unit area, providing reliable data for evaluating paper sizing and surface resistance.

Precision Test Cylinder: The instrument includes a precision-machined metal test cylinder that holds the water during the testing period, ensuring uniform contact between water and the sample surface.

Easy and User-Friendly Operation: The simple and robust design allows operators to perform tests quickly and efficiently, making it suitable for both laboratory and production floor testing.

Durable Construction: Manufactured with high-quality materials and corrosion-resistant components, the tester ensures long-lasting performance and reliability in industrial testing environments.

Standard Compliant Testing: The Cobb Sizing Tester is designed to perform tests in accordance with international paper testing standards, ensuring accurate and industry-accepted results.

Applications

The Cobb Sizing Tester by QGI is widely used for testing the water absorption properties of:

Writing & Printing Paper

Kraft Paper

Corrugated Board

Packaging Paper

Cardboard Sheets

Paperboard Materials

Paper Bags and Cartons

This testing instrument helps manufacturers maintain quality control, surface sizing standards, and product performance in humid or wet conditions.

Applicable Standards: ISO 535, SCAN P12, DIN 53132, TAPPI T 441, EN 20535, PAPTAC F.