Will high humidity affect reflow soldering?

High humidity can have an effect on reflow soldering. This is typically the case for Water Soluble Solder pastes. When making a water soluble paste our goal is to leave a residue behind that is water soluble. This makes the paste hydroscopic thus the paste will absorb moisture.

How do you test gold with baking soda?

Steps

  • Mix three parts baking soda to one part water. Mix the ingredients together until a thick paste forms….
  • Apply the paste with a cotton swab. You can also use a sponge to apply the paste….
  • Pour vinegar over the gold. Use distilled white vinegar….
  • Rinse and dry the gold. Place the gold under warm running water.

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