What is an Atmospheric-pressure Chemical Ionization (APCI) Heater?

APCI heater
Diagram of APCI highlighting heating element.
For more information
on APCI heaters call BCE
at (510) 274-1990 or visit

Mass spectrometers work by removing target components as ions in a gas phase, and then detect them as ions under high vacuum. In the development of liquid chromatography – mass spectrometry (LC-MS) a significant problem arises from the vaporization from liquid mobile phase when large amounts of gas can be introduced into the mass spectrometer (MS), and thus decreasing the level of vacuum and impinging the ability of ions to reach the detector.

Dealing with the mobile phase and preventing the introduction of the smallest amounts of gas is critical in LC-MS.

Atmospheric-pressure Chemical Ionization (APCI)

One solution is to use Atmospheric-pressure Chemical Ionizationa specific type of chemical ionization. Atmospheric-pressure Chemical Ionization vaporizes solvent and sample molecules by spraying the sample solution into a heater (approx. 400 °C) using a carrier gas, such as Nitrogen. The solvent molecules become ionized via corona discharge and generate stable reaction ions in the mass spectrometer.

An APCI heater is a specialty electric heating element that has a resistance temperature detector (RTD) built-in for accurate temperature control, a .016” ID capillary tube in the center of the heater axis and a maximum operating temperature is up to 400°C.  This assembly also comes complete with the connector plug.

For more information on APCI heaters contact BCE at (510) 274-1990 or visit http://www.belilove.com/apci-heater.

Hotwatt Electric Heating Elements for OEM, Laboratory, and Industrial Applications

Hotwatt Electric Heating Elements
Hotwatt is a leader in manufacturing resistance heating elements. They have an extensive product line that includes cartridge heaters, immersion heaters ideally suited for heating various liquids, air process heaters for providing hot air and gas up to fourteen hundred degrees, stainless steel strip and finned strip heaters in various sizes, self-contained one piece assembly oil in rope heaters; tubular and finned tubular heaters which have been specially built to resist impact, vibration, corrosion, and temperature extremes; extremely versatile band heaters for a multitude of applications; and ceramic and crankcase heaters for custom solutions. Hotwatt's technical information and accessory items ensure that hard what has everything you need for complete thermal system.

Contact BCE for more information at (510) 274-1990 or visit http://www.belilove.com.