Gravimetric viscous liquid, paste, cream dispensing

Decrease in cost per sample up to 90+ %.
Increase in productivity by a factor of 10+.
Gravimetric viscous liquids, pastes and creams dispensing and aspiration (oils, highly-viscous oils, pastes, waxes, etc.) into the rack / reactor format of your choice.
4-Needle Head for volumetric liquid handling and sampling.
The balance moves to the destination, increasing speed and efficiency.
Balance resolution of 0.1 mg, or 0.01 mg.
A large dispensing range, from a few mg up to several grams.
Viscous dispensing / dosing robotic tool can be combined with other tools to accommodate multiple workflows.
Dispensed amount, mixing speed, temperature, time…, and other data are stored in a read only log file.
Easy access to data with a convenient interface to pull results into Excel or virtually any other software.
Interface to DOE.

Enhance your Efficiency and Productivity with our Workflow Solutions!

Overhead gravimetric dispensing of viscous liquids workflow

Breakthrough Dispensing Technology: Overhead Gravimetric Dispensing WHILE mixing, heating, refluxing and / or cooling.

Customer testimonial

“Enabling companies like Unilever to develop new materials and improve products is exactly what the Centre was set up to achieve. I’m delighted that our strong relationships with Unilever and Chemspeed are enabling real innovation in materials discovery.”

Chemspeed’s SWING VISCODOSE deck modularity allows the user to execute and perform a variety of viscous liquid dispensing workflows in a fully automated fashion.

The Gravimetric Dispensing Units (GDU-HV and GDU-V models) are used to perform automated, gravimetically and volumetrically controlled dispenses and aspiration of (highly) viscous liquids, pastes and creams in the milligram to multigram scale.The modules pick the appropriate container, dispense the (highly) viscous liquid, and then place the container back to its station before picking the next one. Both dispensing units include an overhead balance, and allow dispensing and simultaneous weighing of (highly) viscous liquids into various vials, reactors, well-plates.

The Gravimetric Dispensing Unit for highly viscous liquids and molten waxes

The Gravimetric and Volumetric Dispensing Unit including Online Density Measurement on the fly for viscous liquids

Exemplary dispensing time: 1g in 20 sec (depending on (highly) viscous liquids properties).
(Highly) viscous liquid dispensing capacity: (expandable with additional (highly) viscous liquids storage module)
- SWING
  - up to 144 cartridges for the SDU, up to 32 cartridges for the GDU-P
  - up to 65 cartridges for the GDU-HV, up to 180 syringes for the GDU-V
- SWING XL:
  - up to 240 cartridges for the SDU, up to 56 cartridges for the GDU-P model
  - up to 125 cartridges for the GDU-HV model, up to 360 syringes for the GDU-V
Reduced dispensing time: the balance moves from one target to the next, continuously dispensing and weighing without having to move the target to the balance. The anti-drip system avoids cross contamination and enables addition of (highly) viscous liquids or any other material into any formulation vessel, reactor, vial etc. on the platform deck while mixing, heating, cooling etc.
One dispensing design and one AutoTeaching tool to cover all your (highly) viscous liquids, pastes and creams. The sophisticated algorithm of the software finds automatically the best conditions to dispense your ingredient.
Automatic exchange of a dispensing cartridge if one is empty, the system automatically takes the next container.

Multiple dispensing configurations: one-to-one, one-to-many, many-to-one, many-to-many

Platform Configuration Example

Exemplary Swing viscodose deck with shakeable / heatable / coolable crimp racks; reagent / sample racks; and the following tools:a 4-Needle Head for liquid handling, a Gravimetric Dispensing Unit (GDU-V) for viscous liquids dispensing, and a Capper / Crimper.
SWING VISCODOSE: Platform configuration example

Available upgrade options:

Brookfield Viscometer RVDV-II+ Pro BK

Range: 100 – 40’000’000 mPa.s (cP).
Speed range: 2’000 – 64’000 rpm.
No of Increments 20’000 – 512’000.
Temperature range: -70 oC to +220 oC.

Thermal Analysis Rheometer

Optical encoder dual reader.
Advanced drag cup motor.
Normal force rebalance transducer.
Active temperature control.