Third Wave Water Mineral Sachets can be added to distilled or tap water to improve the mineral content of your water and enhance your coffee when brewing. The Third Wave Water Classic Roast Profile helps strike the ideal balance between acidity and PH, ensuring that your coffee is free from astringent flavours and unwanted aftertastes. Third Wave Water have not only focused on enhancing your coffee's taste but also on protecting your equipment. Your kettle, coffee maker, and other machinery are vital, and the mineral profiles are designed to safeguard your equipment from scale buildup. Our permanent hardness minerals ensure that your equipment remains in top condition, allowing you to enjoy your coffee with out worry of damaging your equipment. Third Wave Water Minerals - Classic Profile The Classic Profile was created to meet the earlier SCAA water requirements with 10 mg of sodium chloride, ~40 TDS/kH of alkalinity and 150 TDS (total dissolvable solids). The Classic Profile is suitable for: Pour Overs, Batch Brewers, and Cold Brew. All minerals are permanent hardness and helps protect your coffee brewing equipment. Third Wave Water Minerals - Espresso Profile The Espresso Profile was created to meet the later SCA water requirements while simultaneously protecting espresso machine boilers. Contains ~80 TDS/kH of alkalinity and 150 TDS (total dissolvable solids). The Espresso Profile include: Espresso Machines, Super-automatics, Batch Brewers, and Pour Over brewing. All minerals contain permanent hardness and help protect your coffee brewing equipment. Building water recipes from scratch or testing your water to see how much mineral content is super important, TDS or Total Dissolved Solids refers to the entire amount of minerals and particles dissolved in your liquid. While this doesn't tell you what type of minerals is in your water it indicates how much is dissolved in total. TDS Meter Pen Features: Accurately measures the TDS of a liquid. Compact and lightweight, easy to take around with you and test the hardness of your water. The black cap can be used to hold a sample of water for you to measure TDS. How To Use Third Wave Water: Add 1x Stick of your Third Wave Water Mineral Sachet into 2L of Distilled water. Shake to mix the contents. pour this directly into your coffee brewing kettle or your espresso machines reservoir. Included: 1x Box of '20 Individual Sachets' (Classic Profile / Espresso Profile) 1x Third Wave Water TDS Pen Meter