Pipette cleaner, mild alkaline, tenside-free concentrate. Good for use in ultrasonic cleaning baths and rinsing units, also for pipette rinsing units that operate on the scouring principle and require an active cleaner. The product is tenside-free which guarantees that there are no residues after cleaning. It also allows an undisturbed draining and reading behaviour of the reagents in the pipettes and other glass vessels for the volumetric mass analysis.