The CalibrexT™ universal 520 series is a bottle top dispenser developed by Socorex Swiss. It is built with simple and rough construction, simple installation, and comes with universal chemical compatibility. The unit is supplied with flexible volumes from 0.25 to 2 mL, 1 to 5 mL, and 1 to 10 mL. In addition, its base thread is suitable for 32 mm flask neck diameter. It is also available with 3 models and each comes with 3 connectors for 28, 40 and 45 mm bottle neck diameters.