Certified Laboratory Testing Program

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Accredited by the National Association of Independent Laboratories for Protective Equipment TestingJM Test System’s is fully accredited for testing high voltage rubber protective goods, to the following ASTM/ANSI Standards:





D120     /    F496


D1051   /    F496


D1048   /    F479

Line Hose

D1050   /    F478

Rubber Insulation Covers

D1049   /    F478

Rubber Insulating Matting


Hot Stick and Hot Line Tools


Insulating Plastic Guards


Insulating Aerial Devices


Protective Grounds used on de-energized electric power lines

ASTM F855-03

Test Procedure:

Electrical Safety Testing Procedures at JM Test SystemsA. Solvent Cleaning – Solvent is environmentally acceptable, MSDS statement provided

B. Detergent Washing – Mild detergent is used, MSDS statement provided.

C. Dielectric Testing – Procedure is done in accordance with ASTM Standards, Rubber goods are rejected during this step for: 1. Electrical breakdown. 2. Leakage current exceeding maximum limits set forth in ASTM Standards.

D. Drying – Drying is done with circulating warm air.

E. Visual Inspection – Rubber goods are carefully inspected inside and out for age cracking, imperfections in the rubber, minor tears, chemical attack and corona cutting.

F. Stamping – Rubber goods are stamped in ink and the boxes are labeled in accordance with ASTM.

G. Packing – Rubber goods will be packed in cartons. Rejected gloves shall be so marked and returned.

H. Documentation – Written certification of results will be furnished for all tested materials.

Visit our Accreditation page to see details concerning our protective equipment testing certification.

For more information regarding JM Test Systems’ certified laboratory tesing program, please contact us at 800-353-3411 or email us at [email protected].