Bio Dilutor - Serial Diluter

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The Bio Dilutor enables the performance of fast and accurate decimal dilutions and general purpose small volume liquid handling. This instrument cuts back on time spent in labs devoted to general small liquid handling procedures and dilutions.

Although devised specifically for the performance of serial dilutions in microbiology labs, any life science lab can benefit from the use of this high precision automatic pipette. The Bio Dilutor Advanced model can be connected to a scale in order to perform gravimetric dilutions. During diluting procedures, in order to avoid samples contaminating the diluent, the instrument separates sampled volumes from the rest of the diluent with an air bubble.


Efficiency: The Bio Dilutor streamlines serial dilutions and liquid handling by reducing times and labor required. When diluting, it avoids diluent contamination with an air bubble system that ensures handled samples won’t come in contact with diluents.

Precision: A precise stepper motor controls liquid dispensing in the Bio Dilutor.

Versatility: It can be programmed to match a large array of liquid dispensing and dilution needs. A commanding pedal is available to ease operation with the device.

Its liquid handling circuit can be easily disassembled for sterilization.


Both Bio Dilutor models are high precision liquid handling tools that can automate serial dilutions and small volume liquid dispensing (between 1µl and 10 ml). While highly recommended to perform serial dilutions, it can also be used to precisely fill containers with predefined solution volumes.

The Biodilutor Advanced enables labs to perform low volume gravimetric dilutions when connecting the device to balance. Once sample weight is measured, the instrument dispenses accurate amounts of liquid according to it-s weight. The advanced model also includes a controller keyboard that eases device programming.

Both models can connected to a printer in order to print records of the dilutions and liquid dispensing that take place.


Initial sample dilution takes place inside sterile bags, samples are placed in Portabag holders while awaiting to be homogenized in Masticator blenders. Once homogenized, aliquots can be serially diluted using the Bio Dilutor. The Eddy Jet 2 spiral plater is used in order to reduce the amount of plates that are processed, offering a threefold decimal dilution counting range in a single plate. Following incubation, plates are automatically counted and fed with the Plate Handler or automatically counted and manually fed with the Flash&Go.


Syringe volume: 10, 5, 2.5 or 1ml autoclavable
Maximum flow speed: 4 ml/s with 10 ml syringe
Minimum volume step: 1/1000 of the total volume of syringe
Use of disposable tip: Programmed from the beginning of process
Air bubble volume: Programmable
Sample volume: Programmable. Limited to the tip volume (1300 ml)
Min. sample volume: 1% of the syringe volume used. Warning message if it is less than 5%
Dilution factor: Programmable from 1:1 to 1: 1000
Reproducibility: Better than 1% even for dilutions using more than one single syringe stroke
Printer communication: Serial RS 232, programmable.
Mains: 100/240 V, 50/60Hz
Power: 40W
Dimensions (WxHxD): 30x30x20cm / 11.8x11.8x7.8 in
Weight: 6 Kg / 13.2 lb.
For Advanced only
Balance communication: Serial RS 232, programmable.
Gravimetric dilution: By specific weight of solvent
Linked programs: Up to 9


BIO DILUTOR BASIC with handgrip for tips, complete liquid circuit with bottle,10 ml syringe and box of 60 units of gamma-irradiated tips Cat. No. 90001300
BIO DILUTOR ADVANCED with handgrip for tips, complete liquid circuit with bottle,10 ml syringe and box of 60 units of gamma-irradiated tips Cat. No. 90001310
Request the voltage and frequency needed.


DescriptionCat. No.
Optional foot switch.90001348
Stainless steel delivery tube for straws for the hand held.90001502
Stainless steel delivery tube for straws90001446
Handgrip for straws with stainless steel delivery tube, without silicone tubing (foot pedal needed)90001445
Autoclavable stand for LT syringes without syringe and adapter (no needed for 10 ml)90001330
Cable BIO DILUTOR-printer90002514
Cable BIO DILUTOR ADVANCED balance (State balance manufacturer and model when ordering)90002515
Printer (interface serial, 40 columns)90003069
Label printer (Interface serial)90003070
Box of 24 containers of 60 tips each irradiated with gamma rays90001470
Bag 1000 disposable tips not irradiated90001322
Bag of 10 stainless steel holders (60 tips)90001480
Box of 24 empty containers90001490
Box of 1000 irradiated straws90001450

Specifications subject to change without notice.


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