Microtul

Custom Microinjection Pipettes

Insect, Aquatic, and Mammalian:
Eggs, Larval and Adult

Mosquito, Drosophila, Moth, Butterfly, Silkworm, Zebrafish, Squid, Killifish, Medaka, Limulus, Ctenophore, Tardigrade, Mouse, Rat, Vole, Hamster, Equine, Bovine, Canine, Lavage, Bee Insemination, Coral Polyp Feeding, and the list goes on!

Microscope image of spermatazoa microinjection using a Microtul custom micropipette
Microtul

lab consulting
pipette fabrication training


We specialize in helping you assemble the perfect combination of tools for your lab, customized for specific research challenges, including electrophysiology, and microinjection applications.Equipment-related services:

  • Installation and training

  • Equipment Repair, Tune-Up and Refurbishing, including pipette pullers, micromanipulators, and microforges

  • Pipette fabrication training: Patch, Intracellular Recording, Microinjection/CRISPR, Aspiration and Transfer, Holding, ICSI, Piezo ICSI, ESCell, Nuclear Transfer, Force Probes, etc.

  • Help with buying new or used equipment

Microtul

About the maker

I’m Adair Oesterle, the founder of Microtul.I've worked in the biotechnology industry for 25+ years as an application engineer. My journey in research began at the Marine Biological Labs located in Woods Hole, MA.My expertise includes technical support, scientific writing, manufacturing and beta testing biomedical research instruments, conducting transgenic research, and the production of custom micropipettes. I am a specialist in microinjection applications and am the author of the Pipette Cookbook (2005 – 2025 editions).My experience has been further enriched through contracting opportunities with the International Atomic Energy Agency, Google/Verily, Lawrence Livermore National Labs, the Massachusetts Institute of Technology, UCSF, and Smithsonian/USDA alliance.I am eager to collaborate with you to assess your research requirements and assist in developing the ideal laboratory configuration and microtools.

USFCR Verified Vendor
Adair Oesterle, holding a medium format film camera
Microtul

Contact

We're happy to answer questions about custom micropipettes, microinjection training and consultation, and equipment recommendations.phone: +1 (805) 701-5145
email: [email protected]
Or, use this contact form:

Thank you

Thank you for reaching out to Microtul. We look forward to discussing how we can help you and your lab.

Microtul

Custom Micropipette Worksheet

Design your custom micropipettes here. We'll reach out to you to discuss details before production.

We'll respond shortly via email with a price quote. We're happy to discuss your application and our recommendations based on Microtul's extensive experience. Custom pipettes: Clean, non-sterile, for research use only. Not for human use.

Microtul

Capillary Glass Order Form

Specify the capillary glass you need. We'll reach out to you to discuss details.

We'll respond shortly via email with a price quote.
We're happy to discuss your application and our recommendations based on Microtul's extensive experience. Microtul Capillary Glass has fire-polished ends unless otherwise specified.

Microtul

Capillary Glass List

Borosilicate Glass w/ Filament

1.5mm Thick-Walled w/ filament
MCGB150-86-10F
MCGB150-86-7.5F
MCGB150-86-10F-HP
MCGB150-86-7.5F-HP
(HP=Heavy Polish)

1.5mm Thin-Walled w/ filament
MCGB150-110-10F
MCGB150-110-7.5F
MCGB150-110-10F-HP
MCGB150-110-7.5F-HP
(HP=Heavy Polish)
MCGB150-117-10F
MCGB150-117-7.5F

1.2mm Thick-Walled w/ filament
MCGB120-69-10F
MCGB120-69-7.5F

1.2mm Thin-Walled w/ filament
MCGB120-90-10F
MCGB120-90-7.5F

1.0mm Thick-Walled w/ filament
MCGB100-50-10F
MCGB100-58-10F

1.0mm Thin-Walled w/ filament
MCGB100-78-10F

15cm and Custom lengths available

Borosilicate Glass, non-filamented

1.5mm Thick-Walled (no filament)
MCGB150-86-10
MCGB150-86-7.5

1.5mm Thin-Walled (no filament)
MCGB150-110-10
MCGB150-110-7.5
MCGB150-117-10
MCGB150-117-7.5

1.2mm Thick-Walled (no filament)
MCGB120-69-10
MCGB120-69-7.5

1.2mm Thin-Walled (no filament)
MCGB120-90-10
MCGB120-90-7.5

1.14mm Thick-Walled (no filament)
MCGB114-53-10 (non-polished)

1.0mm Thick-Walled (no filament)
MCGB100-50-10
MCGB100-58-10

1.0mm Thin-Walled (no filament)
MCGB100-75-10

15cm and custom lengths available

Aluminosilicate Glass w/ Filament

1.0mm Standard-Walled w/ filament
MCGA100-64-10F

1.2mm Standard-Walled w/ filament
MCGA120-87-10F

1.5mm Standard-Walled w/ filament
MCGA150-100-10F

Aluminosilicate Glass, Non-Filamented

1.0mm Standard-Walled (no filament)
MCGA100-64-10

1.2mm Standard-Walled (no filament)
MCGA120-87-10

1.5mm Standard-Walled (no filament)
MCGA150-100-10

Custom lengths available

Quartz Glass w/ Filament

1.0mm Thick-Walled w/ filament
MCGQ100-50-10F
MCGQ100-60-10F

1.0mm Thin-Walled w/ filament
MCGQ100-70-10F

1.2mm Thick-Walled w/ filament
MCGQ120-60-10F

1.2mm Thin-Walled w/ filament
MCGQ120-90-10F

1.5mm Thick-Walled w/ filament
MCGQ150-75-10F

1.5mm Thin-Walled w/ filament
MCGQ150-110-10F

7.5mm, 15mm and custom lengths also available

Quartz Glass, Non-Filamented

1.0mm Thick-Walled (no filament)
MCGQ100-30-10
MCGQ100-50-10
MCGQ100-60-10

1.0mm Thin-Walled (no filament)
MCGQ100-70-10

1.14mm Thick-Walled (no filament)
MCGB114-53-10 (non-polished)

1.2mm Thick-Walled (no filament)
MCGQ120-60-10

1.2mm Thin-Walled (no filament)
MCGQ120-90-10

1.5mm Thick-Walled (no filament)
MCGQ150-75-10

1.5mm Thin-Walled (no filament)
MCGQ150-110-10

7.5cm, 15cm and custom lengths available

Microtul

Events

Come meet with us at upcoming events:

SPIE Photonics West 2026

17 - 22 January 2026
San Francisco

Biophysics 2026

21 - 25 February 2026
San Francisco

M-CAMS 2026

12 - 13 March 2026
West Lafayette, Indiana

Advanced Research Training Courses, Marine Biological Laboratory

April - October 2026
Woods Hole, Massachusetts

20th Transgenic Technology Meeting

15 - 18 September 2026
Leiden, The Netherlands

Entomology 2026

8 - 11 November 2026
Columbus, Ohio

Society for Neuroscience 2026

14 - 18 November 2026
Washington, D.C.

Cell Bio 2026

12 - 16 December 2026
San Diego

Microtul

Anatomy of a Pipette

Available options and dimensions

TIP Options
blunt, polished, beveled or spiked
TAPER Options
straight or bent

TIP ID (Inner Diameter)
Standard: 1.0µm – 125µm
Available Range: 0.02µm to 300µm
TAPER
Standard: 5mm – 10mm
Available range: 2mm – 20mm

SHAFT
Standard: 5cm
Available Range: 3cm – 15cm
SHOULDER
Standard: 3mm – 4mm
Available range: 2mm – 6mm