Positive Displacement Digital Microdispensers

Digital microdispensers engineered for unparalleled accuracy.

The brand you trust. The results you can see.

Equip your laboratory with industry-leading Positive Displacement Digital Microdispensers. Featuring a direct digital set and readout function, fractional microliters can be easily identified and precisely distributed. A positive lock prevents accidental volume changes. The microdispenser has an overall volumetric accuracy of ±1, at full volume.

Constructed of borosilicate glass bores and stainless steel plungers. PTFE tips on all plungers 25 μL or larger. Polypropylene bore on Model 590.

Repeat kit available for Model 590 and 390.



Catalog Information

Cat. No. Total Capacity (μL) Recommended Range (μL) Delivery Increments (μL)
Buy Now 3-000-510 10 2.0 to 10 0.01
Buy Now 3-000-525 25 5 to 25 0.1
Buy Now 3-000-550 50 10 to 50 0.1
Buy Now 3-000-575 100 20 to 100 0.1
Buy Now 3-000-590 1000 100 to 1000 1
Pipettes Made in the USA

All of our products are proudly made in the USA.

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What Positive Displacement Digital Microdispensers Users Say

The New Nanoject III Is Now Available!

Nanoject II vs. Nanoject III Comparison

Both units utilize the same glass capillaries for pulling micropipettes. Due to the new improved method of securing the micropipette, smaller tips can be pulled and utilized on the Nanoject III. No O-rings to wear out. A micro “chuck” is used, and it simplifies attachment of the micropipette once backfilled with oil. The Nanoject III’s auto HOMING feature will eliminate the need to “rehome the unit as in the Nanoject II. This can reduce, if not totally eliminate, jamming of the plunger. Now available for the Nanoject II is the new Digital Control Box which has all the functionality of the original control box but now features a user friendly, easy to read touchscreen.

Product Name Nanoject II Nanoject III
Injection volumes 2.3 nL-69 nL 0.6 nL-999.9 nL
Rate of injection 46 nL/sec.& 23 nL/sec. only 1 nL/sec.-200 nL/sec.
Injection counter No Yes
Programmable multiple injections No Yes
Programmable frequency between injections No Yes
Auto HOMING of plunger No Yes
Micropipette I.D. size 10 µm minimum 2-3 µm minimum
Optional Footswitch Yes; inject only Yes; fill, empty and inject capability
Color, Touch Sensitive Keypad No; fill, empty, inject buttons only. Optional Digital Control Box Upgrade available Yes; multi screens
External computer interface Use of footswitch contact to inject. Injector has to be finished its injection at the speed rate of the Nanoject II before it will accept another pulse Use of a special opto-isolated input to allow the user to control injection rate and injection volume

Drummond Pipet-Aid® Controller Comparison Chart

Use this comparison chart to understand the difference between Drummond Pipet-Aid® Controller models and their useful features. This information will help you choose the best pipette controller to deliver the most accurate results for your intended applications.

Feature Other Pipette Controllers Portable Pipet- Aid® XP Pipette Controller Portable Pipet- Aid® XL Pipette Controller Pipet- Aid® Hood Mate® Pipette Controller
3 Speed Aspiration & Dispensing X
Removable Stand X X
Use in hood/laminar flow cabinet X X
Weight 230g 214g 214g 122g