HM Digital, Inc. has added a new handheld TDS meter to its line, the TDS-EZ. With retail-oriented design and packaging, the pen meter is perfect for giveaways and promotions. Features include durable housing and long-lasting batteries, an easy-to-read screen with hold button and a range of 0-9990 ppm. The attractive, translucent blue meter includes a color-coded chart on the back explaining TDS levels. Designed in the U.S. and Korea, the made-in-China meter is backed by a two-year warranty.www.hmdigital.cominfo@hmdigital.com