# JSP & GTE Boric Acid Powder 8oz or 1lb Bag – 99.9% Pure Anhydrous H3BO3 for Gold Refining, Jewelry Casting, and Industrial Use

**JSP & GTE Boric Acid – The Trusted Standard for Gold Refining and Jewelry Casting**

Professionals across the refining and jewelry industries trust **JSP** and **GTE** for reliable, high-purity chemicals—and this **99.9% pure anhydrous boric acid powder** is no exception. Packaged in a durable **8 oz bag or 1lb bag**, it's ideal for refining gold and silver, fluxing during melts, and protecting tools from oxidation.

#### 🔥 **Perfect for:**

**Gold & Silver Refining:** Removes oxides and impurities, forming a clean slag for higher yield.

**Jewelry Soldering:** Mixed with alcohol and burned off, it shields metals from oxidation during torch work.

**Tool Coating:** Prolongs tool life by creating a protective barrier on crucibles and other equipment.

#### ⚙️ **Also used in:**

Steel hardening

Flame retardant applications

pH buffering for pools and labs

DIY chemistry and lab experimentation

* * *

**Product Details:**

Brand: **JSP or GTE (you choose)** 

Grade: **99.9% Pure Industrial / Anhydrous**

Form: **Fine Powder**

Net Weight: **8 oz or 1lb bag (You choose)**

Packaging: **JSP** **Clear zip bag or GTE black Mylar resealable labeled bag**

📦 **Ships UPS Ground (USA only)**  
⚠️ Handle with care. Use PPE and ventilated space when refining.

**_New to gold refining?_**

_Visit our Gold Refining Learning Center for beginner-friendly guides that explain the basics of gold recovery, refining concepts, common materials found in electronics, and how precious metals are identified and evaluated._

_These guides are designed to help you better understand refining processes and the tools commonly used in precious metal work._

**_Explore the Learning Center [HERE](https://www.goldandsilvertesting.com/pages/gold-refining-learning-center "Gold Refining Learning Center")_**

## Details

- **Price:** 11.97 USD - 17.95 USD
- **Vendor:** GOLD TESTING EQUIPMENT
- **Type:** Gold Refining
- **Tags:** GOLD TESTING EQUIPMENT, Shopify Collective

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| GTE Boric Acid Powder 8oz Mylar Bag | 11.97 USD | In stock |
| GTE Boric Acid Powder 16oz Mylar Bag | 16.94 USD | In stock |
| JSP Boric Acid Powder 8oz bag | 12.97 USD | In stock |
| JSP Boric Acid Powder 16oz bag | 17.95 USD | In stock |

## Images

- JSP & GTE Boric Acid Powder 8oz or 1lb Bag – 99.9% Pure Anhydrous H3BO3 for Gold Refining, Jewelry Casting, and Industrial Use
- JSP & GTE Boric Acid Powder 8oz or 1lb Bag – 99.9% Pure Anhydrous H3BO3 for Gold Refining, Jewelry Casting, and Industrial Use
- JSP & GTE Boric Acid Powder 8oz or 1lb Bag – 99.9% Pure Anhydrous H3BO3 for Gold Refining, Jewelry Casting, and Industrial Use
- JSP & GTE Boric Acid Powder 8oz or 1lb Bag – 99.9% Pure Anhydrous H3BO3 for Gold Refining, Jewelry Casting, and Industrial Use
- JSP & GTE Boric Acid Powder 8oz or 1lb Bag – 99.9% Pure Anhydrous H3BO3 for Gold Refining, Jewelry Casting, and Industrial Use
- JSP & GTE Boric Acid Powder 8oz or 1lb Bag – 99.9% Pure Anhydrous H3BO3 for Gold Refining, Jewelry Casting, and Industrial Use
- JSP & GTE Boric Acid Powder 8oz or 1lb Bag – 99.9% Pure Anhydrous H3BO3 for Gold Refining, Jewelry Casting, and Industrial Use
- JSP & GTE Boric Acid Powder 8oz or 1lb Bag – 99.9% Pure Anhydrous H3BO3 for Gold Refining, Jewelry Casting, and Industrial Use
- JSP & GTE Boric Acid Powder 8oz or 1lb Bag – 99.9% Pure Anhydrous H3BO3 for Gold Refining, Jewelry Casting, and Industrial Use

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> Source: [Smart supply deals](https://smartsupplydeals.com/products/jsp-gte-boric-acid-powder-8oz-or-1lb-bag-99-9-pure-anhydrous-h3bo3-for-gold-refining-jewelry-casting-and-industrial-use)
> Updated: 2026-07-21