Sodium Sesquicarbonate is the primary cleaning agent we use in our restoration projects. This product is meant to be utilized in conjunction with our blog post on cleaning coins found metal detecting. https://www.prodetecting.com/blog/cleaning-coins-alkali-wash

Purchase Limit / Anti-Resale Policy (Disclaimer)
To help protect our small business and the original educational content we publish, this product is subject to a strict purchase limit: maximum 100 grams per customer (or household) every 2 months (60 days).

Typical Use Guidance (Why 100 grams is the limit):
For normal hobby use, 100 grams is generally sufficient for substantial processing, for example:

• Copper coins: approximately 100 coins when used at a 2.5% solution concentration

• Silver coins: approximately 50 coins when used at a 5% solution concentration
  (Actual results may vary based on coin size, condition, bath volume, contamination load, and your specific process.)

Order Enforcement:
Orders that exceed this limit—whether placed as a single order or split across multiple orders—may be canceled, refunded, reduced to the allowed quantity, or held at our discretion. We may also limit purchases when we reasonably believe orders are intended for resale, redistribution, bulk re-packaging, or circumventing posted limits.

Original Content Notice:
Our blog posts, images, and written product descriptions are copyrighted content. Copying, reposting, paraphrasing too closely, or using our text/images to market other products (including resale listings) is prohibited. We reserve the right to refuse service and pursue available remedies for infringement.

By purchasing, you acknowledge and agree to these limits and terms. Feel free to contact us with any questions.