Citric Acid: Non-Toxic Post-Cast Jewelry Cleaning Solution
In stock: 1-3 business days
Clean your castings the smart way.
Citric acid is a gentler alternative to post-cast cleaners for jewelers, metalsmiths, and small-batch casters. It’s non-toxic, safe to store, and won’t fill your space with sulfur fumes. Just dissolve, heat, and drop your pieces in, and scrub with a toothbrush to help remove oxides and other surface impurities.
This is pure, food-grade citric acid
• Works on silver, brass, bronze, copper, and gold alloys
• Dissolves instantly in warm water
• Reusable — monitor pH and keep it going
• Low-waste alternative to harsh commercial cleaners
• Safe to decant and filter for reclaimed metals
Batch Sizes Available:
• 50g (approx. 1.76 oz) – makes 250mL / 8.4 fl oz
• 100g (approx. 3.53 oz) – makes 500mL / 16.9 fl oz
• 200g (approx. 7.05 oz) – makes 1L / 33.8 fl oz
Use Hot (140–160°F / 60–70°C) for best results.
Store in a sealed container between uses.
For the modern maker.
Ships from the PNW, USA.
Every order supports Aetherium Innovations and our mission to develop tools and technologies that lower costs and learning barriers in the skilled art trades.
Aetherium products are developed around real workshop and field workflows. If you need dimensions, compatibility guidance, replacement components, or help adapting this product to your setup, contact the workshop before ordering.
The production estimate shown near the purchase button is the current working lead time for this item. Shipping is calculated at checkout.
If an order arrives damaged, does not match what you received approval for, or you need to request a return, contact us with the order number and photos when applicable. We will review the situation directly and help determine the right next step.
Why Aetherium
We design around real workflows, direct feedback, and the belief that a good tool should expand what its owner can do.
