Transfer Pipette 3.0ml Graduated, 7.0ml Capacity - Large Bulb

In this review the Karter Scientific transfer pipette is evaluated as a bulk, general-purpose liquid handling tool for labs, classrooms, and hobbyists. The bottom line: it is best for users who need inexpensive, disposable pipettes with clear graduations up to 3.0 ml and a generous bulb for controlled dispensing. The pipettes feel lightweight yet functional, and their LDPE construction means they tolerate common lab temperatures and simple handling tasks, making them a practical choice when precision to the nearest 0.5 ml is sufficient.

Key Features

• Graduated to 3.0 ml: Easy-to-read markings in 0.5 ml intervals let users measure small volumes without specialized equipment.
• Large bulb design: The roomy bulb helps draw and dispense liquids smoothly for controlled transfers and fewer drips.
• 7.0 ml total capacity: Extra capacity beyond the 3.0 ml graduation provides headroom for handling and mixing without overflow.
• LDPE material: Non-toxic, chemically inert plastic works with biological fluids and many acids, and withstands -50C to 90C.
• 155 mm length: The long pipette profile makes it easier to reach into bottles, tubes, and containers without contamination.

Who It's For

These pipettes suit educational labs, craft and DIY projects, small-scale cosmetic or essential oil work, and any setting that needs inexpensive, single-use liquid transfer. People running sample preparations, youth science activities, or repetitive dispensing tasks will appreciate the affordability and ease of use of the transfer pipette.

They are not intended for analytical work requiring high precision or calibrated pipetting to microliter tolerances. Users needing certified sterile, precision pipettes or pipettors with traceable calibration should look to dedicated laboratory instruments instead.

Pros & Cons

Pros

• Good value for money when buying in bulk for routine transfers.
• Quality LDPE construction that is chemically inert for common fluids and temperature extremes.
• Simple, easy-to-use design favored by beginners and children for science projects.

Cons

• Size and sturdiness are mixed among users; some may find them too large or a bit flimsy for heavy-duty lab work.

Specifications

Brand	Karter Scientific
Material	LDPE (low-density polyethylene)
Graduation	To 3.0 ml in 0.5 ml intervals
Capacity	7.0 ml total capacity (5.0 ml noted capacity)
Length	155 mm
Temperature range	-50C to 90C (LDPE tolerance)

Our Verdict

For anyone needing a high-volume supply of simple, disposable transfer pipettes, these offer clear graduations, a roomy bulb for controlled dispensing, and LDPE durability at a modest cost. They are best for educational, craft, or routine lab uses where rough volumetric control is acceptable rather than precision analytical work.

Frequently Asked Questions

Are these pipettes sterile?
They are available in sterile and non-sterile LDPE formats; verify the specific lot if sterility is required.

What fluids are safe to use with LDPE?
LDPE is chemically inert to biological fluids and most acids and tolerates common aqueous solutions used in labs and crafts.

Can these pipettes be frozen?
Yes, LDPE pipettes can be frozen and may be heat-sealed for sample preservation, including freezing in liquid nitrogen where appropriate.