Pictured: 1 lb Gypsum via Amazon

If you’re looking for water salts by the lb via Amazon…

• Gypsum- 1 lb – Calcium Sulfate
• LD Carlson 6103B Calcium Chloride – 1 lb.
• LD Carlson Calcium Carbonate, 1 pound Capacity – Chalk
• LD Carlson 6102B Burton Water Salts – 1 lb.

Also:

• Water by John Palmer and Colin Kaminski
• Review: Portable Reverse Osmosis Water System
• LaMotte Water Test Kits
• Need a scale for weighing water salts?  See – Hands On Review: American Weigh AWS-100 – 100g x 0.01g Digital Scale
• Special Beer Making Ingredients at MoreBeer – includes water salts