its it 30 test tubes with 30 stoppers, or 30 pieces total with 15 TT / 15 stoppers?

Package contains 30 clear glass test tubes with 30 cork stoppers.

what's the size of the bottle opening?

The inner diameter of the opening is 18mm and outside diameter is 20mm.

Yes, they can be heated. They are made of high quality borosilicate glass.

Could you use these to put cocoa, mints and marshmallows in?

Yes, you can. But please check the size before purchase. Some candies may be too large to fit in.

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Description

🧪 Elevate your experiments and aesthetics with DEPEPE’s sleek test tubes — where science meets style!

PERFECTLY SIZED - Compact 25ml volume and 20×100mm dimensions fit seamlessly into any workspace or creative project.
LAB GRADE CLARITY - Crystal-clear borosilicate glass ensures flawless visibility for every experiment or display.
VERSATILE UTILITY - Ideal for scientific samples, DIY bath salts, candy storage, or chic home décor accents.
LIGHTWEIGHT DURABLE - Robust yet lightweight design balances durability with easy handling for professional or personal use.
SECURE SEAL REUSABLE - Cork stoppers provide airtight closure, keeping contents fresh and ready for repeated use.

This DEPEPE set includes 30 clear, flat borosilicate glass test tubes, each 25ml in volume and sealed with reusable cork stoppers. Designed for heat resistance and airtight storage, these tubes are perfect for scientific, decorative, or organizational uses, combining durability with elegant transparency.

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Manufacturer	DEPEPE
Part number	DE35651
Item Weight	280 g
Product Dimensions	9.91 x 2.01 x 2.01 cm; 280 g
Item model number	DE35651
Material	Glass
Item Package Quantity	1
Batteries Included?	No
Batteries Required?	No

DEPEPE Glass 30pcs 25ml Test Tubes, 20×100mm Clear Flat Test Tubes with Cork Stoppers

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