moveland 300 Pcs 3ml Pipettes Plastic Transfer Pipettes Eye Dropper, Essential Oils Pipettes Dropper Makeup Tool

Q: What is the largest width of the stem below the bulb?

On the 3 ml pipette, it is 7 mm outer diameter.

Q: Can these be used for resin? Specifically to drop resin for jewelry making.

Not sure how thick your resins are, but if anything like thick viscous resinous materials like benzoin, or semi-solid essential oils, I'd say no. The materials have to be heated to liquid for the pipettes to work.

Q: Are the dispensing tips small enough to fit in a tiny perfume bottle with a stopper/applicator?

The plastic ends are 1/8” wide, by 1/2” long. The tips of the pipettes are quite small. Depending on the size of your bottle, it should fit.

Q: How long are they by inches?

Approximately 6inches overall, 4 inches before the bulb

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moveland 3ml Disposable Plastic Transfer Pipettes, Calibrated Dropper Suitable for Science Laboratory, DIY Art (300)

SimPure Centrifuge Tubes 50mL, Conical Tubes Sterile 25 PCS, Polypropylene, Leak-Proof Screw Caps, Plastic Container with Graduated and Write Marks, Non-pyrogenic, DNase/RNase Free, Human DNA-Free