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Karter Scientific 6 Pack - 20x150mm Pyrex Glass Test Tubes with Rim and Markin

Q: What size cork would fit these, #4?

Those size tubes would take a size #7 cork

Q: What is the white component on these?

Hello,The white component on these tubes are usually used for labeling purposes.Kind Regards,customer service

Q: It looks like there's a white button near the top of the tube. Is the white thing removable?

Unfortunately this white area is a marking spot for writing with pen and labeling each tube. The marking spot is white tinted glass that is baked into the tube glass during the printing process. It becomes fused during this process and is permeant. We find the very top layer of the white area fades over time but never really goes away :(

Q: ok, one last question before i buy these or another brand. what is the size in the opening? 20mm? big enough to fit a small gummy bear in? tia

Hello Joey,Not a problem, ask away! We do not mind answering. The outside diameter is 20mm. Wall thickness is approx 1mm. That would make the inside diameter approx 18mm. Therefore, if your gummy bears are smaller than 18mm in width, they should fit. Kind Regards,customer service

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Product ID: 256122587

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Frequently Bought Together

6 Pack - 20x150mm Pyrex Glass Test Tubes with Rim and Marking Spot

United Scientific Supplies TTCL03 Test Tube Clamp with Finger Grips, Steel

EISCO Wooden Test Tube Rack - Accommodates 6 Tubes, up to 22mm - 9.75" Wide - Premium Polished Wood Construction

Description

Karter Scientific 6 Pack - 20x150mm Pyrex Glass Test Tubes with Rim and Markin

Have a Question? See What Others Asked

What size cork would fit these, #4?

What is the white component on these?

It looks like there's a white button near the top of the tube. Is the white thing removable?

ok, one last question before i buy these or another brand. what is the size in the opening? 20mm? big enough to fit a small gummy bear in? tia

Common Questions

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