If I use it on a sterling silver ring will the darkness last or will it wear off?

I don't know how it reacts with silver but I just put this on a copper stove hood and I can honestly say it will never come off without acid and some major scrubbing. The best tips I can give you are, make sure you use hot water (I used boiling) and to mix this outside, this stuff is potent. For a ring I would boil a cup of water and put a very small piece in and stir it until it dissolves. Dip the ring and see if it's dark enough. If not, add another small piece until it's the correct shade. Good luck.

What is the ratio to water, how much will this make, or how many square inches of metal can it treat?

Don’t remember the ratio I used but I know I tried many ways to make it work and it didn’t work for me- I hope u have better luck than I did

Would this stain a bathtub?

Sorry, I don't know. I bought it to turn copper black since it chemically reacts with copper. I don't think it would react with the porcelain of a bathtub, but it still might stain it.

Would this work to turn brass dark brown or black? Thanks!

It will work on brass if the brass is hot and you have made fresh, hot liver of sulfur.

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Liver of Sulfur, 4 Ounce Jar | SOL-600.04

Product ID: 6086332

Details

Brand
EUROTOOL
Item Volume
120 ml
Manufacturer
Eurotool
UPC
654207209027

🔥Dissolves instantly in hot water

🖤Creates durable black patina finish

⚙️4 oz lump form for precise control

₨606

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Description

🖤 Elevate your metalwork with the classic oxidizer that pros swear by!

TIMELESS FINISH - Achieve a rich, lasting black patina that elevates your jewelry’s aesthetic
TRUSTED BY ARTISANS - Join thousands of creators who rate it 4.6 stars for consistent quality
EFFORTLESS OXIDATION - Transform silver & copper with a simple hot water dissolve
SAFE NON HAZARDOUS - Work confidently with a formula that’s safe for your creative space
PRECISION IN EVERY JAR - 4-ounce wide-mouth jar ensures easy access and exact usage

Liver of Sulfur (4 oz jar) by Eurotool is a non-hazardous oxidizing agent that dissolves quickly in hot water to create a durable black patina on silver and copper jewelry. Ideal for artisans seeking precise, consistent finishes, it comes in lump form for controlled use and is highly rated for quality and ease of application.

Specifications

ASIN	B0058ECYUC
Best Sellers Rank	#62,587 in Kitchen & Dining ( See Top 100 in Kitchen & Dining ) #387 in Canning Jars
Brand	EUROTOOL
Brand Name	EUROTOOL
Customer Reviews	4.6 out of 5 stars 343 Reviews
Item Volume	120 ml
Manufacturer	Eurotool
Model Number	SOL-600.04
Part Number	SOL-600.04
UPC	654207209027
Volume	120 ml

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₨606

Duties & taxes included

In stock

Sold byAmazon SeychellesDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Seychelles.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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