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With today's high board densities, and fine-pitch surface-mount devices, in an era of ISO and other quality standards, the requirements for accurate contamination (cleanliness) testing are high.

Ionic contamination testers were designed and implemented for the purpose of determining and monitoring the cleanliness of assemblies. Resistivity of Solvent Extract (ROSE) testers are utilized to ensure that cleaning processes remain within tolerance of IPC and MIL specifications. The Zero-Ion G3 ionic contamination tester meets industrial cleanliness specifications including MIL-STD-2000A, MIL-P-28809 and IPC-001 TM-650 through the use of dynamic measurement technology.

Dynamic Measurement Technology:

Modern cleanliness monitoring frequently requires the testing of assemblies reflowed with no-clean solder paste. The Zero-Ion G3 tester utilizes a dynamic measurement technology, for detecting (weak) ion activators commonly found in no-clean fluxes. With dynamic measurement technology, the contaminated test solution is monitored and then filtered to supply de-ionized test solution back to the test chamber, resulting in greater solubility/sensitivity.

The Zero-Ion tester was selected as the "benchmark" unit for the 1993 study "An In-Depth Look at Ionic Contamination Testing" conducted by the Electronics Manufacturing Production Facility (EMPF), Navy National Center of Excellence for Electronics Manufacturing.

This system provides quick and precise cleanliness measurements of printed circuit assemblies, bare boards, and other electro-mechanical devices. Its ease of use and dynamic results in all three of the leading ionic tester equivalency formats, make the Zero-Ion tester the choice of electronics manufacturers all over the world.

The unit's Windows PC based control system

Control System:

The Control System features a LCD screen provides real-time process information. Intuitive tabbed display screens conveniently organize both stored and real-time process data. Built-in SPC data recording captures all relevant testing data. An integrated SPC database lookup allows users to search for desired data sets, including SPC results by date range, recipe name, board serial number, etc. Cleanliness results may be stored for later viewing or may be printed onto any Windows compatible printer. Additionally, the Zero-Ion G3 may be networked for remote viewing of all SPC data. An optional barcode scanner provides one-touch entry of a board's serial number or other process data.
provides an operator friendly interface and captures all relevant testing data. The PC based control system automatically calculates NaCl/square equivalence (per military and IPC specifications), operates in automatic and manual modes, and is equipped with virtually limitless test recipe capabilities. The combination of test board submersion and immersion spraying

Submersion and Immersion Spraying:

The submerged sprays provide agitation of the test solution while eliminating possible test inaccuracies caused by carbon dioxide adsorption. The combination of test-board submersion and immersion spraying creates an environment whereby soluble contamination is extracted and measured.
creates an environment whereby all of the soluble contamination is extracted and measured.


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