741 the ionograph will defiantly tell you if the contaminants are conductive results

The Branford Group
The Branford Group

A global industrial auction and valuation business with extensive experience in SMT, PCB Assembly & Manufacturing, Test, Semiconductor and other Electronics Machinery & Equipment.

Manufacturer / Equipment Dealer / Broker / Auctions

896 Main Street
Branford, CT USA

Phone: 203-488-7020

Global manufacturing solutions provider

High Precision Fluid Dispensers
Circuit Board, PCB Assembly & electronics manufacturing service provider

World's Best Reflow Oven Customizable for Unique Applications
Solder Paste Dispensing

Smt Feeder repair service centers in Europe, North, South America
High Throughput Reflow Oven

High Throughput Reflow Oven
SMT feeders

Wave Soldering 101 Training Course