The DOH-20D is a portable microprocessor-based dissolved oxygen meter that is convenient, easy to operate, and has the capability of obtaining fast and accurate readings. The custom digital LCD screen displays large numbers for easy reading. The LCD screen can show dissolved oxygen (DO) in either mg/liter or percent of saturation and temperature simultaneously. This product has memory storage, recall with data hold function, and has the ability to store up to 16 sets of temperature and DO values. The user can utilize the RS232 (optional) feature to download stored values into a computer. This product comes equipped with battery saving features. This device will shut down automatically after 10 minutes of being idle and has low-battery and consumption indicators. This product is perfect for biological testing, waste water treatment, fish tanks and environmental testing within the water, waste water, and chemical treatment industries. The DOH-20D comes complete with a sensor, 2 membrane caps, 20 mL of electrolyte, pipette, a rubber protective cover, 9 V battery, operator's manual, and a one year warranty. Price starts at $700
