DO portable S4-Meter

Seven2Go S4-Basic; Dissolved oxygen portable meter
 
High quality data on-the-go
Seven2Go’s simplified menu, automatic sensor recognition, and calibration reminder ensure users obtain high quality data quickly and easily.
 
Comfortable One-Handed Operation
Seven2Go's easy-to-reach hardkey buttons and sleek design ensure comfortable one-handed operation. even in wet conditions and prolonged use.
 
Rugged investment that lasts
Seven2Go's IP67 design, reduced weight, and rugged uGo carrying case ensure a lasting instrument providing reliable data even under harsh conditions.