GiCi has been sold to Parker Medical Inc.

Dr. Shapiro will remain as a consultant.
Dr. Shapiro would like to thank all of his customers for their support for 30 years, and urge them to continue to use the services available at Parker Medical.  We will remain ISO 17025 compliant and continue to use our test procedures. With more space and personnel available, our service can only improve.

 We will be operational again by January 15, 2019 at Parker Medical, Inc.  Please email Parker Medical at
Phone: 860-350-4304
Fax: 860-350-3432

Parker Medical Inc.
137 New Milford Road East
Bridgewater, CT 06752

Parker Medical manufactures the H917 GiCi 2000) voltage divider and the H917 monopole divider, along with an industry leading supply of X-Ray high voltage cables, connectors, components and other assemblies. Consult the PMI web site for more info:

Complete used set of Dynalyzer IIIA, some upgraded to Radcal IIIU version. high voltage unit, Dynalyzer III Digital Display, Interconnect cable, line cords, copies of instruction manual, and heavy duty as-is carry case for each. $5100.00. See used equipment tab.

Units are calibrated to spec. Limited 12 month guarantee, repair or replace at our option. These high voltage units are  internally inspected and rebuilt  and calibrated prior to shipping.

GiCi is accredited to ISO 17025 by ANAB.

View our Certification and Scope.


Don’t Let a Surprise Audit Ruin Your Day; Calibrate Now! Over 30 Years and >20,000 Calibrations!

No one has serviced Dynalyzer™ longer or better than Greenwich Instrument Co. Inc. in Greenwich, CT. We offer exceptionally fast turn around on your equipment calibration. Dr. Jonathan Shapiro, President and Chief Technical Officer (CTO) headed up the Dynalyzer design team at Machlett Labs in 1976, and has been associated with the Dynalyzer ever since.

We have used, rebuilt Dynalyzer™ sets ready to go. We also have the New GiCi 2000/Parker Medical H917 voltage divider, high voltage test cables, and Hologic Mammo test cables.


The high voltage units have been mechanically upgraded with new Delrin plastic insulating parts. Virtually all old Dynalyzer™ need a rebuild to replace broken or nearly broken Lexan parts. Contact us to rebuild your Dynalyzer tank. When it does fail, this may be one of the repair options. We put time and money into our rebuilt equipment, which is much better than used. Dynalyzer™ and voltage dividers calibrated, serviced, and sold by the inventor of the Dynalyzer™, Dr. Jonathan S. Shapiro, PhD.

Please request an RMA number. write call 1-800-998-4424

Gici 2000 Voltage Dividers, Parker Monopole Dividers

1. New GiCi 2000 ( H917) Dividers, tested +/- 75KV. +/-82.5 kv test on request. $2250.00 . 4 week delivery.

2. New ParkerH1049-P1 Monopole dividers, cal data to 150 KV, $4650, hi-pot tested to 165 KV, with extended Federal Standard connector. Also available with R24 HV connector. These are single dividers also available with 6 pin extended federal standard connectors for use with GE CT scanners.   ISO 17025 accredited calibration.

Our Credentials

We are now ISO 17025:2005 accredited by ANAB . ISO 17025 incorporates most sections of ISO 9001, and is a rigorous examination of laboratory practices.

Click link above for cert.

Differences between 17025 and 9001

We also calibrate MAS meters, scopes and DVMs. We sell used- rebuilt Dynalyzer™ to customers worldwide. We are buying used Dynalyzer™ IIIA high voltage units. We offer excellent used equipment built from what we buy . We replace all old Lexan internal components of the Dynalyzer high voltage unit with Delrin, which does not develop stress cracks. Stronger than new.

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