Skip Navigation

Skip to Main Content


Main Navigation:

Department of Chemistry
The Johns Hopkins University
138 Remsen Hall
3400 N. Charles Street
Baltimore, MD 21218

Kenneth Karlin
Department Chair

Phone 410-516-7429
Fax 410-516-8420


Mass Spectrometry at Johns Hopkins University Chemistry Department

The JHU Chemistry Department Mass Spectrometry Facility (MSF) is a component of the Chemistry Department's core instrumentation service. It offers a comprehensive range of organic and bio-organic mass spectral techniques to chemical researchers using a suite of instruments equipped with a range of different ionization methods, including EI, CI, FAB, ESI and MALDI. The facility's primary role is to support chemical research conducted within the department, but it is also available for use by researchers from other JHU departments and divisions, along with those from external institutions and commercial organizations. Most instruments are normally operated by users themselves on a "self-service" basis following user training by the facility manager, though a few are operated by our facility manager on a "submitted-sample" service basis. The facility is managed by Dr Phil Mortimer and is located in the basement of Remsen Hall on the University's Homewood Campus. We welcome enquiries from potential users or those wishing to know more about mass spectrometry, it's capabilities and applications. Some information is to be found on these web-pages, but we encourage you to contact us directly or visit us to discuss your questions in detail. We can be reached at :

The Chemistry Department Mass Spectrometry Facility
Rm. B13, Remsen Hall, Homewood Campus
The Johns Hopkins University
3400 N. Charles St
Baltimore, MD 21218, USA
Tel : 1-410-516-5552
Fax : 1-410-516-8420
E-mail :

The facility is normally open Monday- Friday, 9:00am - 6:00pm. We are closed for all official University Holidays. The most up-to-date information on instrument availability can be found on our Instrument Status and News page

The following links are designed to give an overview of mass spectrometry in general, the services offered by the facility here at JHU Chemistry Department and the instrumentation we have available. We are happy to answer any questions you may have and look forward to hearing from you. We welcome your suggestions for improving the service.

Instrument Status and Latest News and Information

What is Mass Spectrometry?- A brief overview of mass spectrometry, it's principles and applications. Currently under construction.

Facility Instrumentation - A description of the instrumentation based within the JHU Chemistry Department facility and its capabilities.

Using Our Instruments - Guidelines on how to obtain access to our instruments. - This section should be read by ALL prospective users

Selecting an MS Analytical Method - Guidelines on how to choose which technique to use to obtain a mass spectrum of your sample.

Sample Preparation and Submission Guidelines / Forms - Guidelines for preparing samples for mass spectrometric analysis, sample preparation requirements for each technique, and downloadable (pdf format) sample submission forms for the VG-70S high resolution mass spectral service. This section should be read by all prospective users.

Instrument Experimental Conditions - Specimen descriptions of experimental conditions for each of the facility's instruments for inclusion in your publications.

Frequently Asked Questions

Personnel - Meet the MSF lab personnel.

MS Links