Need to Return an Instrument for Service?

If you need to return an instrument(s)  for calibration or repair, please download our Return Material Authorization Form as an Acrobat PDF file, fill it out and print.

Then, call us at 888-666-0595 to request an RMA Number. 

Ship your instrument(s) along with the completed Return Material Authorization Form to:
JLW instruments Inc.
Attn: Service
14 North Peoria Street
Suite B-101
Chicago, IL 60607-2755


  • All service orders must be received with an RMA number and completed form before service work can begin.
  • Instrument(s) received requiring repair are subject to a return fee if either service or replacment is declined.
  • A Recall Notice will be sent after one year as a reminder that your instrument(s) are due for calibration, unless you specify a different calibration date interval on the Return Material Authorization Form under Type of Service - Special Instructions

If you have any questions, please e-mail or contact us by phone.
Phone: 888.666.0595
Fax: 312.733.0009