MPA-20 Pipette from A&D Weighing

Variable or Fixed Volume Variable Volume
Volume Range Min (uL) 2
Volume Range Max (uL) 20
Accuracy (%/uL) 4.0/2.0
Repeatability/Precision (%/uL) 2.5/2.0
Autoclavable Yes
Resolution (uL) 0.1

With thousands of electronic pipette models available in the lab market today, looking for the perfect one to measure liquid samples and dispense media can be very challenging. But don’t worry as Lab.Equipment is here to assist in finding the best lab pipette for your liquid handling tasks. Check out if the A&D MPA-20 single-channel electronic pipette meets your laboratory requirements by going through our frequently asked questions and reviews below. If you are still not sure if this is the right one to get and to help with your pipette search, quickly evaluate the A&D MPA-20 variable volume pipette with other units available by using the our compare button.

Lab.Equipment showcases 181 electronic pipettes from 10 well-trusted manufacturers including A&D Weighing. With an extensive online reach and years of experience doing business with global laboratory brands, you can rely on us to present only the latest product information for an easier electronic pipette selection process. Unlike most distributors around, we don’t give out incomplete product brochures and use complicated terms. We cut through all the noise to ensure our patrons are offered with the best and most cost-effective single channel pipette there is based on preferred functionalities and features.

Recommended for laboratories with large pipetting demands, electronic pipettes like the A&D MPA series can perform pipetting tasks for time sensitive samples while ensuring high-accuracy and precision. Whether working on PCR, protein assays, enzyme activity or preparing solutions, these electronic pipettes can lower chances of skewed pipetting results and can increase lab productivity. Compared to using manual pipettes or even automated pipetting systems, a variable volume, single channel, electronic pipette like the A&D Weighing MPA-20 is an economical alternative if you generally measure and transfer relatively small amounts of liquids, enhancing efficiency of laboratories and at the same time reducing user-related errors.

How much media can the single channel, variable volume, A&D MPA-20 lab pipette dispense?

The AND MPA20 electronic pipette can transfer liquid samples with volumes ranging between 2 - 20 uL.

I run a wide range of pipetting tasks involving small amounts of liquids on a daily basis, is the MPA-20 pipette a good electronic pipette to get?

Yes since the A&D MPA-20 electronic single-channel pipette is convenient to use, lightweight, and durable, perfect for meeting everyday pipetting tasks of scientific labs, universities, and even commercial facilities.

Is the A&D MPA-20 a fixed volume pipette or a variable volume pipette?

The A&D MPA-20 single channel pipette is designed to provide adjustable volumes, offering flexibility to users and their applications.

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Compared to other electronic, single channel, variable volume pipettes, how much accuracy can the A&D MPA-20 provide?

Achieve true pipetting values and deliver equal volumes of liquids with the A&D MPA-20 pipette as it offers an accuracy of 4.0/2.0 (%/uL).

How much precision does the A&D MPA-20 laboratory pipette offer?

Get consistent pipetting and close pipetting results with the A&D MPA-20 as it provides repeatability of 2.5/2.0 (%/uL).

Does the A&D MPA-20 electronic pipette come with multiple pipetting modes?

Yes, the AND MPA20 presents different modes to help reduce user-stress and improve user productivity. Confidently transport and dispense liquid samples with the following:

  • AUTO mode for standard automatic aspiration and dispensing

  • Multiple Dispensing mode (MD) for dividing an aspirated volume into multiple dispensings of a lower volume

  • Mixing mode (MIX) that allows users to set aspirating-dispensing cycles to mix and homogenize samples

  • Reverse Operation function that is best for when working with viscous samples

Is the A&D MPA-20 single channel electronic pipette better than large-volume mechanical pipettes?

Yes, the AND Weighing MAP-20 pipette is engineered with an electronic control for reliable accuracy. This ensures all dispensed sample quantities do not vary depending on user or user pipetting motion applied. Unlike manual pipettes, these electronic MPA pipettes come with better ergonomics for pain-free operations thus reducing user stress. Aside from presenting easy calibration/adjustment by volume (mL) or by weight (mg) to make sure any error caused by differences in tips used are corrected, A&D MPA pipettes are also considered cost-effective since these can also replace pipette controllers in various applications.

Any other features that would make me want to purchase the A&D MPA-20 single channel pipette?

The AND MPA-20 is feature-packed with its 9 program storage for fast recalls of operations and dispensing volume combinations. It is also built with an audio alert that lets users know when an operation has started. Designed with padding on all four corners of the pipette head and with a long curved finger hook for solid grip, the MPA laboratory pipette ensures safety from impacts. Through its electronic control, instances of unnecessary or excessive sample suctions are avoided.

Is the A&D MPA-20 pipette easy to clean and maintain?

Yes as it is autoclavable. The lower part of the AND MPA20 single channel pipette including the piston and tip holder can be quickly separated for sterilization as well as replacement purposes.

Any questions on the A&D MPA-20 lab pipette that we missed answering for you here?

Just ask via our live chat to the right, our contact us page, or email [email protected] and we will get back to you as soon as possible.

A&D MPA Pipettes - Product Videos

Watch complete demos on how each pipetting mode works for efficient handling and consistent delivery of samples into microplates and other vessels. Learn how to set volume, mix, dispense, and aspirate using the MPA pipettes.

Sequential Aspirating (SA) Mode


Sequential Dispensing (SD) Mode


Multiple Dispensing (MD) Mode


Mixing (MIX) Mode


Dispensing and Mixing (AUTO + MIX) Mode


Reverse Operation Mode


MPA-20 Variable Volume Single Channel Electronic Pipette

  • Industry leading price/performance ratio

  • True alternative to mechanical pipettes - for nearly the same cost!

  • Eliminate repetitive thumb strain by using light keystrokes with the index finger

  • Dispense by volume (μL), or weight (mg)

Top 5 Reasons Why You Should Choose The MPA-20

1. Automatic control ensures accuracy for everyone at all times
Unlike manual (mechanical) pipettes, dispensed quantities will not vary with each person or each pipetting motion. Automatic operation ensures uniform accurate pipetting for both novice and expert alike, making anyone’s assays always reliable.

2. Minimal stress, pain-free operation prevents errors due to fatigue

When the volume becomes large, a manual pipette is especially tiring to operate because of the large diameter of the cylinder and long movements of the piston. Operating a manual pipette requires holding out the thumb perpendicular to the hand and then pushing the plunger all the way down with a force of a few kilograms. Such irregular movement can easily cause a repetitive strain injury (RSI) in the base of the thumb as you repeat it day in, day out.

With the MPA series, it is possible to control the plunger by lightly pressing a key with the ball of the forefinger (like pulling a trigger), while maintaining all fingers in a natural, effortless grip. No longer will hours or days of pipetting make you feel any pain in your thumb. *1

**1 Our experiment verified that virtually no strain occurs at all after 3,000 repeated pipettings over a 5 hour period

3. Various useful pipetting functions, including multiple dispensing to a maximum of 99 times*1

This and other functions such as mixing and reverse operations will dramatically increase your work efficiency and accuracy.Apart from standard automatic aspirating and dispensing (AUTO mode), the following functions help greatly reduce time, stress and error associated with certain pipetting tasks:

  • Multiple dispensing (MD) mode

    The MD mode lets you divide one aspirated volume (e.g. 1200 µL) into multiple dispensings of a smaller volume (e.g. 100 µL × 12 times). Use of this function will dramatically increase efficiency when you have to deliver the same amount of sample repeatedly into microplate wells, etc. The MPA series automatically prevents error due to backlash, which presents itself when the operation switches from aspirating to dispensing. You therefore need not discard the first dispensing volume as being inaccurate, as is the case with conventional electronic pipettes.

  • Mixing (MIX) mode

    In MIX mode the pipette executes with one key press a set number of aspirating-dispensing cycles to mix and homogenize the solution in the receiving vessel. The same task using a manual pipette particularly tires your thumb and is also difficult to perform correctly when the mixing volume is small (prone to mix air and produce bubbles).

  • Reverse operation

    When reverse operation is selected, the pipette first aspirates a volume larger than the set dispensing volume, and discards the excess volume after delivery. This function is recommended for viscous samples that tend to linger in the tip.

4. Easy calibration and adjustment by yourself (User CAL function), either by volume (mL) or weight (mg)
All you have to do is simply input the correct value measured by a balance (A&D’s pipette accuracy testers are recommended) into the MPA-20.

Frequent, outsourced pipette calibration services can be expensive and impractical. With the MPA, you can ensure pipette accuracy by performing calibration at your own facility when needed, increasing the precision of your analyses.This function also corrects for possible errors arising from differences in tip characteristics so you can use your preferred manufacturer’s tips without any worry.

Calibration and display in a unit of weight (mg)

With the MPA series, you can choose to calibrate and display the pipetting amount based on the weight (mg) of the sample itself measured using a balance, instead of volume (µL). This will make it much easier for you to handle liquids that need to be managed by weight, such as a diluted solution of a solid or powder, eliminating the necessity of troublesome density calculations. Additionally, it realizes more precise control of dispensing amounts of liquids whose viscous resistances or behaviors inside tips are different from that of purified water (with which the volume is normally calibrated).

5. Despite all these advantages, price is almost comparable to that of a manual pipette

Other Features of the MPA Pipettes:  

Increased resistance to impacts from falls
One of the most common repairs of electronic pipettes is for a broken LCD display due to drops and falls. With padding on the four corners of the head*, the LCD panel of the MPA is designed to be protected from impacts from falls. Also, the finger hook that rests on your middle finger is long and curved in such a way that the pipette will remain perched in the hand even when the grip is loosened. 

User-friendly industrial design
The movement of the trigger can be controlled with the ball of the index finger instead of the thumb while maintaining all fingers in a natural, effortless grip.

Simple function and operation settings
Changing the operation mode, volume(s), aspirating and dispensing speeds*5, etc., is simple and straightforward. Further, up to nine combinations of these settings can be saved in the pipette for immediate recall at later times.

Battery and charging options
The MPA series receives power supply from either an AC adapter or lithium-ion rechargeable battery (1,800 pipettings guaranteed on a full charge). You can also use the pipette without any hitches while charging the battery at the same time via USB connection.

Besides the USB power connecter, the MPA series is equipped with electrode terminals to be hooked onto the following charger devices (all sold separately).

For over 40 years, A&D Weighing has been providing advanced and accurate measurement instruments for a diverse range of markets including Research, Industrial Protection, Jewelry, and Food Processing. One of the trusted names when it comes to precision measurement and product inspection, A&D Weighing delivers an innovative line of electronic balances, digital scales, weighing indicators and controllers, load cells, and non-destructive measurement equipment. Complying to ISO:9001-2008 standards, A&D manufactures high quality products from worldwide operations in the US, Japan, Germany, Australia, Great Britain, and Korea and serves the Americas from its headquarters in Silicon Valley, San Jose, CA. Trust A&D to prove performance with its 5-year warranty on all microbalances, analytical balances, and precision scales.

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Resolution (uL): 0.1
[Pipette] Accuracy (%/uL): 4.0/2.0
[Pipette] Autoclavable: Yes
[Pipette] Repeatability/Precision (%/uL): 2.5/2.0
[Pipette] Variable or Fixed Volume: Variable Volume
[Pipette] Volume Range Max (uL): 20
[Pipette] Volume Range Min (uL): 2

  • Customer Reviews on MPA-20 Pipette from A&D Weighing

    Given its capabilities, this pipette is really cost-efficient. I tend to use the multiple dispensing mode a lot which is faster than pipetting one by one. Reverse pipetting is also really useful for when I'm working on viscous samples. Discharge is very precise and consistent since it's automatic. When I first got this, I was expecting it to be heavy but it's actually lightweight so I can use if for several hours without feeling exhausted.

    Pipetting is so accurate with this. You can even calibrate it based on sample weight so it doesn't matter whether your samples are aqueous or denser. It also has recall function for when you need to repeat pipetting tasks.

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