QED AP4Plus Bladders Use the DR 2800 spectrophotometer

Use the DR 2800 spectrophotometer in the lab with regular line power or in the field with the optional lithium-ion battery

This Diver features stainless steel (316L) casing with a 22 mm diameter

user-replaceable multi-sensor design

providing maximum control oversampling

The Drager-Tube pump accuro draws in 100 ml per stroke

QED AP4Plus Bladders Use the DR 2800 spectrophotometerEasier to Disassemble and Clean The AP4+ was made easier to clean by using 3 bolts to attach the pump inlet and open up the pump. This is easier than having to rotate the inlet multiple turns to unthread it from the center tube inside the pump, especially under field conditions of silt, deposits and coatings. Removing the inlet is also aided by the new, precision ID pump casing, ensuring a more controlled fit. The new pump casing's smoother internal