Ionplus AG

Lerzenstrasse 12

8953 Dietikon



Tel    +41 43 322 31 60

Fax   +41 43 322 31 79


Upcoming Events

AMS 14 Conference

Ionplus will attend the 14th International AMS Conference in Ottawa, Canada, August 14 - 18, 2017.

Past Events

New Production Site

Ionplus has set up a brand new production site in Zurich. Pictures are online now.

JAMS 18 Conference

Ionplus attended the 18th Japanese AMS Conference (JAMS 18) in Tokyo, Japan, March 4 - 5, 2016.

6th EA - AMS Conference

Ionplus attended the 6th East Asian AMS conference in Taipei, Taiwan,

October 5 - 8, 2015.

AMS-13 Conference

Ionplus attended the 13th International Conference on Acceleraotr Mass Spectrometry in Aix-en-Provence, France,

August 24 - 29, 2014.

GIS - Gas Interface System


The Ionplus Gas Interface System (GIS) is the most versatile gas handling system for 14C-AMS measurements of CO2. Direct measurements of CO2 are performed on ultra-small samples (3 to 100 µg C), lower precision samples for screening and samples that require high throughput. Sample CO2 is mixed with helium and the mixture is continuously fed into the ion source of MICADAS or any other gas-capable AMS system by means of a stepping motor-driven gas syringe.

GIS can handle CO2 from the following sources:

  • Glass or quartz ampoules containing CO2
  • Organics combusted with an elemental analyzer (EA)
  • Carbonate samples hydrolyzed with acid in septum-sealed vials (CHS)
  • Gas cylinders of standard, reference or blank gas mixed with helium
  • Any device that produces CO2 in a flow of carrier gas
GIS Gas Ion Source
GIS Gas Ion Source




All functionalities of the instrument are software-controlled and the first three coupling options are fully automated for gas measurements without user interaction for 8 to 40 samples. Moreover, the coupling of virtually any device is possible through the integrated zeolite trap.

GIS Specifications


  • CO2 sample sizes between 3 and 100 μg carbon can be handled
  • Versatile couplings with an elemental analyzer (EA), a carbonate system (CHS) and an automated tube cracker (tube dimensions: 4.0 mm O.D., length: 55 – 75 mm)
  • Fully automated measurements for up to 8 tube samples and up to 40 samples with the elemental analyzer or carbonate system (limited by sample changer of the AMS system)
  • Semi-automated measurements (two mouse clicks per sample) with other AMS systems
  • 60 or more samples can be handled per day
  • 4 auxiliary gas inlets for reference gasses
  • 1 gas inlet for the use with a built-in zeolite trap