Using The Tensette Pipet - Hach DR/700 Procedures Manual

Using the TenSette Pipet

For best results, always use a new tip for each pipetting operation. After
being used several times, the pipet tip may retain some liquid, causing
an error in delivery, Each pipet is supplied with 100 tips. Order Hach
replacements, for best results.
Always use careful and even hand movements for best reproducibility.
If the pipet does not operate smoothly, disassemble and coat the piston
and retainer with high-quality stopcock grease. The metering turret also
may be lightly coated with grease. Refer to the manual supplied with the
TenSette Pipet for more information.
For best accuracy, both the room temperature and the solution being
pipetted should be between 20 and 25°C. Avoid palming the pipet an
unnecessarily long time prior to use because the aliquot volume could be
affected by elevated temperatures.
Never lay the pipet down with solution in the tip. Solution could leak
into the pipet and cause corrosion.
Operating Instructions
1. Attach a clean tip. Holding the TenSette in one hand, gently press the
tip onto the tapered nose of the pipet until the tip is held firmly and a
good seal is obtained.
2. Turn the turret cap to align the desired volume on the volume-setting
ring with the mark on the housing assembly.
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