WHEATON 2016 Lab Catalog

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WHEATON 800.225.1437 (U.S. & Canada Only) | 856.825.1100 | 856.825.1368 (F) |
Liquid Handling > 134
Calibrex™ digital 520 Bottle Top Dispensers
Designed for performance handling of liquids from a large variety of bottles and flasks,
the Calibrex™ dispensers combine the latest in dosing technology, high-tech materials
and ergonomic design. They are manufactured and tested to fully comply with current
safety regulations. Three color-coded 520-models with adjustable volumes are available,
with ranges of 0.25 - 2mL, 1 - 5mL and 1 - 10mL. Fixed volume dispensers are also
available; please contact WHEATON Customer Service.
Product Advantages
■ Superior chemical resistance
■ Long lasting performance stability
■ Simple construction - no tool for disassembling
■ Instant volume setting
■ In-lab calibration
■ Autoclavable at 121°C/250°F fully assembled
■ Two-year warranty
520
0.25 - 2mL
1 - 5mL
1 - 10mL
Easy Digital Volume Setting
Fast and precise volume adjustment. Efficient click-stop mechanism prevents unwanted
alteration. Large display is easy to read; the window adjusts to desired side of instrument
body. Each step on the cylindrical cam is pre-calibrated and corresponds to one division
on the volume adjustment scale.
OptimizedWorking Position
The instrument rotates 360° for adequate positioning on top of the bottle.
Air Filter
Air inlet can be enlarged to receive a membrane filter, if airborne contamination is a concern.
In-lab Calibration
Calibrex™ dispensers are factory calibrated and can be easily recalibrated by means of
a dedicated adjustment screw.
Easy Maintenance
Disassembling / reassembling is facilitated by the limited number of well-connected
parts, no tool needed.
Performance and Ordering Information - Calibrex™ 520
Calibrex™ 520 dispensers have a 32mm base thread and also fits GPI thread sizes 33-400 and 33-430.
They come with three adapters (28, 40, 45mm) and feed tube 300mm.
Inaccuracy (E%) Imprecision (CV%)
Cat. No. Volume Division Min. Vol. Mid. Vol. Max. Vol. Min. Vol. Mid. Vol. Max. Vol.
844000 0.25 - 2mL 0.05mL < ± 3.0 % < ± 1.8 % < ± 0.6 % < 0.5 % < 0.35 % < 0.1 %
844002 1 - 5mL 0.1mL < ± 2.0 % < ± 1.3 % < ± 0.6 % < 0.5 % < 0.35 % < 0.1 %
844004 1 - 10mL 0.25mL < ± 1.5 % < ± 1.1 % < ± 0.6 % < 0.5 % < 0.35 % < 0.1 %
*Specify desired fixed volume within instrument range when ordering.
Performance values obtained with double-distilled water at constant temperature (± 0.5°C) comprised
between 20 and 25°C in accordance with ISO 8655.
Superior Material Selection
Special attention is paid to component materials, providing for
long instrument life. Parts coming in contact with the liquid flow
are chemically inert.
Parts Material
Feed Ttube PTFE
Intake Valve Ceramic
Valve Balls Pyrex® Glass
Valve Spring Platinum-iridium
Barrel Borosilicate Glass
Barrel Plate / Base PTFE
Plunger Glass with PFA Coating
Outlet Valve Ceramic
Body ETFE
Delivery Jet Assembly PTFE / ETFE
For Chemical Compatibility see page 137.
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