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Pipette Tips and Racks

Pipette Tips
Complete discharge of liquid - nothing remains
207, 705, 706, 806 series
thin wall soft fitting

Ultrathin formed tip point enables complete liquid dispense.

To avoid contamination...
Filter Tips / Hyper Filter Tips
The hyper filter tips has a Lineup from 10ul to 1200ul

Filter Tips are recommended. There is no overflow and concerns of contamination!

Long / Extra Long Size
Long Tips / Extra Long Tips
Extra long tips

Extra long tips enable to touch the bottom of tubes and centrifuge tubes.

Large bore Tips
Edgeless Large Bore Tips
Enlarged picture of large bore tip

Edgeless large bore tips are well suited for pipetting of mouse embryo, nematode, glycerol and retinal cell, which are difficult to handle with small bore tips.


Watson Pipette Tip System

Tough and extremely durable

The body and lid, made of polycarbonate (PC), does not lose its shape over time use. It can also be autoclaved repetitively.
Note: Repeated autoclaving may cause rack damaged.

Low cost and high chemical resistant

The body and lid, made of Polypropylene (PP) is lightweight, durable, and highly resistant to chemicals and heat. Because of its inexpensive cost compared with System Rack (PC), this System Rack (PP) can be disposed as one time use if used with non-sterilized long tip, or can be reused even after autoclaving if tips are manually refilled.
Note: The rack made of PP shrinks slightly after autoclaving, consequently refill plate cannot be used.

RNase/DNase/HumanDNA Free Mark
Nuclease-free certificate

This mark shows RNase/DNase/Human-DNA free. Products with this mark are manufactured in the clean room under our high quality control, and inspected to meet our strict quality standards. RNase/DNase-free certificates can be issued for each lot upon your request.

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Replacement Plates
Easy, Handy, and Eco-Friendly

One-touch replacement for the System Rack. The paper cover can be recycled.
Note: Use a PC (polycarbonate) rack when refilling tips.

Remove the old plate.

Place the new plate. Remove paper skirt.

Refilling tips is complete.

Replacement Plates

Stacked replacement plates for System Rack, which is space-saving.
Note: Use a PC (polycarbonate) rack when refilling tips.

Lift a plate.

Place it into a rack.

Refilling tips is completed.


Full Product line for users convenience

10 µL


Long type overall length is 50 mm. Even though it is long enough to reach for the bottom of 1.5 µL micro-tubes, pipette nozzle doesn't touch the bottom. It is contamination-free product.

#207 Long #204 Short

200 µL


705 series, have extremely thin tip points because of our super-thin forming technology which was developed to completely release liquid without any liquid remaining.

#705 #703 #503

250 µL / 300 µL

250µl / 300µl

The overall length of 801 long type tip is 89 mm, and it is useful when using 5 µL test tube, φ12 x 75 mm.

250 µL #801 Long 300 µL #505

1000 µL / 1200 µL

1000 µl / 1200 µl

These thin wall and soft fitting type tips release liquid without any remaining liquid in the tip, and extra-long type tips, are contamination-free.

1000 µL #706 1000 µL #804 Long
1000 µL #502 1000 µL #707 Long
1000 µL #806 Long
1200 µL #805 Extra-Long

Edgeless Large Bore Tips

Edgeless Large Bore Tips

These large bore tips are idealy suited to pipette mouse embryos, hydra, nematode, glycerol, and retinal cells, which are hard to handle with small bore tips.

Edgeless Large Bore Tips

Macro tips

Macro tips

5 mL large volume pipette tips

5000 µL #401

general WEB catalog
downloadable catalog
Microfabrication of plastic