what is the diameter of the upper opening? My Cole Parmer pipetter has a 13.5mm pipette tip attaachment point. Will these pipette tips fit securely?

The diameter of the upper opening is about 16mm, we are not sure whether the Cole Parmer pipettor fit our tips. We are selling the micropipettes on amazon and suggest you to try our pipettors when you have demand in future.

Do these tips come sterile or do they need to be autoclaved before hand?

These tips is not sterile, you can autoclave them before using them if you need sterile tips. We have the filter tips( 10ul,20ul,100ul,200ul,1000ul) that is sterile and Non-Pyrogenic ,DNAse/RNAse Free, you can find it easily in our store.

Are these tips resistant to organic solvent as xylene?

This tip is made of PP(Polypropylene), it is resistant to xylene, but this tip is not with filter ,the xylene is volatile and could come into the body of the pipette. We suggest you to order our filter tips that could avoid the liquid come into the pipettor body. You can find the filter tips in our store easily. Any other questions, please feel free to contact us directly. ONiLAB

Do the tips work with onilab 100-1000ul pipette?

Yes, all the ONiLAB pipette tips 100% match ONiLAB micropipettes, you can order without worry. The 1000ul tips match 100-1000 ul pipettor. You can find the match table in the listing of the tips and pipettor so that you can know which tip match the corresponding pipettes. Any other question, please feel free to contact us directly. ONiLAB

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🔬 Elevate your lab game with precision and ease—because every microliter counts!

BULK READY - 1000 clear yellow tips per pack—stock up and never run out during critical experiments.
PRECISION PERFECTED - High-quality polypropylene ensures airtight seals for flawless liquid handling.
EFFORTLESS OPERATION - Tapered design enables smooth tip loading and ejection, reducing repetitive strain injuries.
UNIVERSAL COMPATIBILITY - Seamlessly fits leading pipettes like Eppendorf, Gilson, Thermo, and more for versatile use.
STERILIZE WITH CONFIDENCE - Fully autoclavable tips withstand 121℃ for 20 minutes, maintaining lab safety standards.

ONiLAB Pipette Tips 200 µL are crafted from premium polypropylene, offering airtight seals for high accuracy. Their tapered, soft design ensures easy loading and ejection, minimizing strain. Fully autoclavable at 121℃ for 20 minutes, these tips fit most major pipette brands, making them a versatile, reliable choice for professional labs.

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