Most units are made from plastic—commonly polypropylene. Some countertop models also include stainless steel and silicone components.
Capacities range from about 10 ounces up to 50 ounces. Common sizes shown include 24 fl oz, 32 fl oz, and 50 fl oz.
Look for mixing mechanisms—rotating handles or blades—that break up clumps, adjustable stoppers that limit air entry, and airtight powder containers or precise mixing technology to minimize bubbles.
Electric dispensers commonly dispense between 2 and 10 ounces in 1-ounce increments and offer three temperature settings (for example: room temperature, body temperature, and a warmer setting).
Some pitchers and mixers can prepare multiple bottles at once—for example, up to four 8-oz (250 mL) bottles—while other pitchers note being able to make up to about 24 ounces in a single batch.