Brand Dispensette S Bottle-Top Dispenser, Digital, 0.2-2 ml, with Recirculation Valve, DE-M, 4600321
€389.00
- Volume range 0.2 to 2 ml
- Digital counter, graduation 0.01 ml
- Accuracy 0.5 %/10 µl, coefficient of variation 0.1 %/2 µl
- recirculation valve fitted
- Media compatibility red, standard version
- autoclavable at 121 °C, 2 bar
- DE-M marked
Product information "Brand Dispensette S Bottle-Top Dispenser, Digital, 0.2-2 ml, with Recirculation Valve, DE-M, 4600321"
Anyone in the laboratory who repeatedly needs to prepare calibration standards wants to be able to read the volume without estimating the scale by eye. With 0.2 to 2 ml, the Dispensette S Digital covers exactly this need and shows the set value on the mechanical counter. The colour code red stands for the standard version, suitable for a wide range of acids, alkalis and solvents, but not for hydrofluoric acid, hydrochloric acid above 20 percent or nitric acid above 30 percent.
Autoclavability
The complete device is autoclavable: 121 °C, 2 bar, at least 15 minutes to DIN EN 285, cooling time around 2 hours in the closed autoclave. This means the Dispensette S Digital can also be used where sterile conditions are required for reagent dispensing, for example with microbiological culture media.
Distinction within the Dispensette S standard series
The three versions of the Dispensette S standard series differ in the way the volume is set, not in accuracy. Anyone who changes more often between volumes within the stated range gets on fastest with the Digital display. Anyone who is comfortable with a mechanical scale saves on purchase cost with the Analog version. And anyone who permanently needs only one volume gets by most easily with the Fix version.
Accuracy and graduation
Accuracy is 0.5 %/10 µl, the coefficient of variation figure 0.1 %/2 µl, the graduation 0.01 ml. These values apply to all volumes set within the range 0.2 to 2 ml and were determined according to the general test procedure for piston-stroke devices.
Digital counter
The digital counter allows fine, reproducible volume setting via the setting wheel. Unlike a Fix version, the volume can be chosen freely within the stated range, which saves time with changing batches in the same volume window because no second device is needed.
Recirculation function
This version has a recirculation valve. Excess liquid can thus be returned to the stock bottle without opening the discharge tube or removing the bottle. This is practical with expensive or hazardous reagents, for example when a calibration check needs several back-weighings or when too much volume was dispensed by mistake.
Mounting and handling
The Dispensette S Digital is mounted directly on the stock bottle using the bottle adapter supplied, and the telescopic filling tube can be shortened to the bottle height. The mounting key is part of the scope of delivery and is needed when changing the valve or discharge tube. After fitting, the device is drawn up and dispensed into a waste container several times until there are no more air bubbles in the system, after which it is ready for use.
Media compatibility
The range of media includes aggressive reagents, highly concentrated acids such as phosphoric or sulphuric acid, salt solutions and many organic solvents. By contrast, hydrofluoric acid, hydrochloric acid above 20 %, nitric acid above 30 %, THF, trifluoroacetic acid, carbon disulphide and explosive liquids must not be dispensed. The yellow Organic variant is intended for concentrated hydrochloric and nitric acid, THF and trifluoroacetic acid; for hydrofluoric acid, Brand recommends the Dispensette S Trace Analysis with platinum-iridium valve spring.
Frequently asked questions
Can the counter be reset to zero?
Yes, the setting wheel allows any volume within the stated range to be set, and the counter shows the value currently set.
Which bottle sizes fit the Dispensette S Digital?
According to the accessories table, the adapters GL 24-25, GL28/S 28, GL 32-33, GL 38, S 40 fit. The telescopic filling tube can be shortened to the respective bottle height.
For which work step is the volume range 0.2 to 2 ml intended?
Typical uses include the spiking of samples with defined very small amounts, the range thus covers an application window in which a smaller or larger volume of the Digital series would no longer fit.
Typical applications
- Preparing calibration standards
- small reagent additions in titration
- Spiking of samples with defined very small amounts
Technical details
| Line | Brand Dispensette S, Digital |
| Volume | 0.2 to 2 ml |
| Graduation | 0.01 ml |
| Accuracy | 0.5 %/10 µl |
| Coefficient of variation | 0.1 %/2 µl |
| Recirculation valve | yes |
| Media compatibility | Standard version, red, not for hydrofluoric acid, hydrochloric acid above 20 percent, nitric acid above 30 percent |
| Materials of wetted parts | Borosilicate glass, Al2O3 ceramic, ETFE, FEP, PFA, PTFE, platinum-iridium and PP on screw cap and bottle adapter |
| Autoclavability | 121 °C, 2 bar, at least 15 minutes to DIN EN 285, cooling time around 2 hours in the closed autoclave |
| Marking | DE-M |
| Manufacturer article no. | 4600321 |
Scope of delivery
- Bottle-top dispenser for GL45 threaded bottles
- Discharge tube including recirculation tube
- Telescopic filling tube
- Mounting key
- Bottle adapter matching the volume
- Quality certificate
- Operating manual
Individual requirements and procurement service
For additional bottle adapters, replacement valves or further volumes from the Dispensette S Digital series, LT Laborhandel provides support through its own procurement service at lt-laborhandel.com/service.
| Display type: | Digital |
|---|---|
| Operation: | mechanical |
| Recirculation valve: | with recirculation valve |
| Volume range: | 0.2 ml - 2 ml |
| Volume setting: | variable |