CUSTOMIZED PRECISION DISPENSERS/ASPIRATORS
FROM STANDARD MODULES
We strongly believe
(after 20 years of handling sub-micro volumes in Research)
that the key to customer satisfaction is:
An easy customization of
a well developed product.
TechElan offers a
large selection of standard and custom assembled non-contact Liquid Dispensers
and/or Aspirators/Dispensers (TEDA Series), capable of handling volumes from 25
nano-liters and up with high precision and repeatability.
These Aspirators/Dispensers have practically no reagent losses and
minimal dead volumes.
The TEDA series Aspirators/Dispensers are using proprietary high speed
Precision Valves in combination with adjustable Vacuum and Pressure to
reliably transfer (dispense) volumes down to 20 nano-liters.
The TEDA series includes a broad range of Aspirating/Dispensing Devices with
different layouts, performance parameters and options.
An easy evaluation of TEDA dispensing performance can start with a Single Channel Kit, which has all necessary components for manual testing of Dispensation
A number of pre-designed and pre-fabricated modules developed for the TEDA line, support multiple options and
can be custom assembled to closely match customer specifications:
Single or Multi-Channel Dispensers or Aspirators/Dispensers (2, 4, 8, 16+
Individual or common sourcing reservoirs.
Manual or Automated (single or multi-channel) Aspirators/Dispensers.
Selectable channel to channel spacing (4.5 mm, 9 mm, etc.).
Large variety of valve mounting, holding or connecting options
Equipped with Pulse Generators (controllers) and Drivers or a "bare bone"
system, "open" for external interface with X-Y Positioning controllers, System
built-in or remote Pressure (Dispense) and/or Vacuum (Aspiration) support.
patented individual dispensation indicators or feedback.
FLUIDIC/PNEUMATIC SUPPORT OPTIONS
handling Low, Medium or High Viscosity liquids
handling Low, Medium High Pressures
large variety of fluidic interface options.
Internal (built-in) or external reagent reservoirs of selectable volumes (from
0.5 to 150 ml.)
EXAMPLES of CUSTOMIZED DISPENSERS ASSEMBLED FROM "STANDARD"
(COMBINED) Aspirator/Dispenser modules
are developed for the stand alone operation or as a
part of a larger instrument or installation.
TEDA-100 units can be equipped with a
selectable number of individually controlled aspirating/dispensing channels for a non-contact dispensation down to 20 nano-liters
with less than 5% CVs (Coefficient of Variation).
Individual electronic valve drivers enable an independent dispensation
control of up to 8 channels, which support dispensation of different volumes
and individual adjustments
If the Aspiration function is supported, these units will be equipped with
automatically descending and retracting Aspirating needles and individual
TEDA-100 Aspirators/Dispensers are using high speed, high
precision miniature dispensing
type valves and can be supplied with high
accuracy liquid pressure controllers for the best adjustment and
repeatability of all dispensation parameters (volume, speed, stream and/or
Dispensers are designed for both single-channel (manual)
and/or multi-channel automated operation with 9 mm center to Center spacing.
This unique capability is extremely helpful for transition from Assay
development to an automated process.
As Dispensers TEDA-200 devices are capable of dispensing volumes starting
with 20 nano-liters with less than 5% CVs (Coefficient of Variation). If
equipped as Aspirators/Dispensers, the starting volume is usually around 50
A specially developed side-tapered trapezoidal body
allows TEDA-200 to be used as an individual "hand held Pipetter", or to become
a part of a multi-channel dispensation module with standard 9 MM center
to center spacing. These dispensers have a number of selectable options
assembled per order from prefabricated modular components to closely match
customer requirements. All
TEDA-200 Aspirators/Dispensers are using high speed/high
precision miniature SMLD type dispensing valves and high accuracy liquid pressure
controllers for the best adjustment, accuracy and repeatability of all dispensation parameters (volume, speed,
stream and/or droplet shape).
Piston driven with internal ceramic Reservoir
Piston Drive with Syringe
is a stand alone hand held
Aspirator/Dispenser unit with a special,
ergonomically designed handle and a replaceable mini reservoir located on the
handle. The model shown employs a
high precision miniature SMLD100 type valve, which has
the same dispensing parameters as SMLD-300 valve although has a one piece
construction. Aspiration and dispensation is done
through the valve. Alternatively a new reagent can be used by simply
replacing the screw-on mini reservoir. This dispenser is well suited for
assay developments or low to medium throughput experimentation. it is
equipped with a unique adjustable handle, which can be set to exactly match
operator's hand. An external controller supports all necessary electronic,
pneumatic and pneumatic control functions.
"Click" to enlarge
TEDA-250 (MAGNETIC FIELD ACTUATION).
This is an experimental dispenser based on a novel technology
, which employs a soft capillary tubing collapsing under electromagnetic
field. It offers a unique "flow
through", "valveless" non-clogging disposable dispensation channel, providing a reliable
low cost (limited accuracy) dispensation.
experimental dispenser, which was successfully prototyped represents an array
(e.g. 96, 384) of calibrated micro-channels, which lead into corresponding
cavities. An array of cavities is located in a large hermetic chamber, which
contains a reagent saturated hydrophilic sponge covering the entire array. A special membrane is
pneumatically actuated compressing the sponge into individual arrays and,
therefore, discharging the liquid in equal amounts, through calibrated
orifices at the bottom of each cavity. The pneumatic pressure applied to the
membrane and sponge is equally distributed across the array providing a
coordinated dispensation of a predetermined volume.