Checkline AD-300 Precision Durometer

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Measures according to 
DIN 53505 (A, D) 
ISO 868 (A, D) 
ISO 7619 (A, D) 
ASTM D 2240 (A, D, C, O).

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The Checkline AD-300 precision durometer is designed to measure the hardness of vulcanized or thermoplastic rubbers, elastomeric or soft plastic materials and silicon products via indentation resistance. 

The AD-300 durometer meets the requirements of most international standards, including:

• DIN 53505 (A, D)
• ISO 868 (A, D)
• ISO 7619 (A, AO, D)
• ASTM D 2240 (A, D, C, O)

The AD-300 is German-engineering with the highest build employing an ultra-low friction movement and an indentor machined to the highest standards. Together with the ergonomic enlarged foot this enables you to take highly accurate and repeatable measurements. 

The AD-300 Hardness Tester is available in Shore A, D, C and O scales 

Hardness readings are displayed on an easy-to-read analog scale. An optional MEMORY POINTER holds readings until manually reset, allowing the operator to concentrate on the measurement task. The AD-300 Hardness Tester will be delivered with operating instructions, carrying case and manufacturer's certificate. A full calibration certificate can be ordered optionally.

Features

• Ergonomic barrel and 18mm footer offers stable platform for measurement eliminating "wobble"
• Large easy to read dial indicator (0-100 units)
• Memory pointer optionally available
• Highly accurate and repeatable
• German-engineered and built
• Conforms to DIN 53505, ISO 868, ISO 7619 and ASTM D 2240
• Traceable calibration certificate Optional

Specifications

Dial face diameter	57 mm
Total length	121 mm
Range	0 - 100
Footer Diameter	18 mm
Accuracy	±0.5
Weight	184g
Standards	DIN 53505 (A, D) ISO 868 (A, D) ISO 7619 (A, A, D) ASTM D 2240 (A, D, C, O)

Conformance to International Standards

Model	ASTM D2240	DIN 53505	ISO 868	ISO 7619
AD-300-A	X	X	X	X
AD-300-C	X
AD-300-D	X	X	X	X
AD-300-O	X

Indentor Types

Type	Indentor Shape		Force
A		Flat cone point, 35º Included Angle Soft rubber, plastics, and elastomers, printer's rolls.	822 Gr
C		Flat cone point, 35º Included Angle Medium hard elastomers and plastics. Also useful to avoid surface marks.	4536 Gr
D		Sharp cone point, 30º Included Angle Hard rubber and plastics such as thermo plastics, flooring and bowling balls.	4536 Gr
O		3/32" Spherical Very soft elastomers, textile windings, soft granular materials. Use below 20 Duro A.	822 Gr

Related Products

OS-300-2 Durometer Test Stand Provides improved accuracy & repeatable when used by separate operators Spring loaded lever for fast & precise travel

AD-100 Durometer Tester Includes NIST-Traceable Calibration Certificate Conforms to ASTM D-2240, DIN 53505, ISO 868, JIS K 7215 and ISO 7619. Asker C model conforms to JIS K-7312 18 mm diameter footer provides stable basis for testing and conforms to all International Standards