Test tubes are essential laboratory equipment for heating, mixing, and storing chemical substances. This article features a selection of high-quality test tubes suitable for heating applications, including options made from borosilicate glass known for their heat resistance and durability. We provide detailed insights into popular products on Amazon and a comprehensive buying guide to help you select the most suitable test tubes for your needs.
| Product | Capacity | Material | Quantity | Special Features |
|---|---|---|---|---|
| EISCO 24PK Test Tubes, 50ml | 50ml | Borosilicate 3.3 Glass | 24 Pack | 1.2mm thick walls, beaded rim, heat & chemical durable |
| EISCO 16PK Test Tubes, 50ml | 50ml | Borosilicate 3.3 Glass | 16 Pack | Uniform wall thickness, chip & crack resistant rims |
| EISCO 32PK Test Tubes, 30ml | 30ml | Borosilicate 3.3 Glass | 32 Pack | Thin walls, beaded rim, excellent thermal shock resistance |
| Eisco Round Bottom Test Tubes with Screw Cap, 50ml | 50ml | Borosilicate 3.3 Glass | 12 Pack | Round bottom, leak proof Bakelite cap, autoclavable |
| PATIKIL 10ml Test Tubes with Plastic Cap | 10ml | Borosilicate Glass | 10 Pack | Round bottom, heat resistant, plastic cap, multipurpose use |
EISCO 24PK Test Tubes, 50ml Borosilicate Glass
The EISCO 24PK Test Tubes, 50ml set offers industrial-quality test tubes made of heavy-duty Borosilicate 3.3 glass. With a uniform wall thickness of 1.2mm, these tubes provide excellent thermal shock resistance, making them ideal for heating applications and laboratory use. The test tubes feature fire polished beaded rims that are chip and crack resistant, ensuring durability during handling and repeated heating cycles. Each test tube measures approximately 5.9 inches tall with a 1-inch diameter, making them suitable for common lab setups.
EISCO 16PK Test Tubes, 50ml Borosilicate 3.3 Glass
This pack contains 16 pieces of 50ml Borosilicate 3.3 glass test tubes with the same high-quality specifications as other EISCO products. The tubes feature 1.2mm thick walls for heat resistance and a beaded rim for durability. Ideal for heating and chemical experiments, these tubes resist cracking and damage caused by thermal stress. The uniform thickness protects samples from temperature variations during heating.
EISCO 32PK Test Tubes, 30ml Borosilicate Glass
The EISCO 32PK Test Tubes come in a 30ml size, perfect for smaller sample volumes. Constructed from heat and chemical resistant Borosilicate 3.3 glass with 1.2mm thick walls, these test tubes offer excellent thermal shock protection. The fire polished beaded rims help prevent chips and cracks, maximizing reliability during heating. Their size and quantity make them well suited for high-throughput experiments or educational labs.
Eisco Round Bottom Test Tubes with Leak Proof Bakelite Caps
This 12 pack of 50ml round bottom test tubes from Eisco brings premium-grade Borosilicate 3.3 glass tubes equipped with leak proof Bakelite screw caps lined with rubber. The caps provide secure sealing to prevent leaks during heating and storage. These test tubes are autoclavable and heat resistant, compliant for repeated sterilization. The round bottom design helps even heat distribution, making them practical for synthesis and biological experiments.
PATIKIL 10ml Round Bottom Test Tubes with Plastic Caps
The PATIKIL 10ml test tubes are smaller, made from heat resistant Borosilicate glass with plastic caps for sealing. Measuring approximately 3.94 x 0.63 inches, they are suitable for small volume experiments, plant propagation, and storage of beads or spices. Their transparent design allows easy observation of contents, and the caps help keep the test tubes airtight. These tubes balance portability with chemical durability.
Buying Guide for Test Tube Heaters and Heat-Resistant Test Tubes
Choosing the right test tubes and heater setups depends on several key factors related to your laboratory or project requirements. Below is a comprehensive guide addressing important considerations:
Material Quality
Borosilicate Glass is the preferred material for test tubes that require heating, given its excellent thermal shock resistance and chemical durability. Ensure the glass is labeled as Borosilicate 3.3 for superior performance. Avoid soda-lime glass for heating applications due to its susceptibility to cracking.
Tube Size and Volume
Test tubes come in various volumes, commonly ranging from 10ml to 60ml. Smaller tubes like 10ml or 12ml are ideal for micro experiments and sample storage. Larger tubes such as 30ml, 50ml, or 60ml offer more capacity for chemical reactions or heating larger quantities. Choose size based on your experimental scale.
Wall Thickness and Thermal Shock Resistance
Look for test tubes with uniform, thin walls (~1.2mm) for optimized heat transfer while maintaining strength. Such thickness enhances thermal shock resistance, reducing breakage during sudden temperature changes common in heating procedures.
Rim and End Finishing
Beaded rims and fire polished edges improve durability and user safety by minimizing chips and cracks around openings. Smooth rims also provide safer handling and improve sealing when caps are used.
Leak Prevention Features
For liquid handling applications or storage, test tubes with compatible screw caps or plastic caps ensure airtight and leak-proof seals. Bakelite or plastic caps with rubber liners are common and suitable for preventing spills during heating or transport.
Heater Compatibility
While this article focuses on test tubes resistant to heating, pairing them with suitable heaters is vital. Use heaters designed for glassware, such as electric test tube heaters with adjustable temperature control or water baths for indirect heating. Ensure the heater supports the tube sizes you select.
Quantity and Application
Purchase test tubes in quantities that match your usage frequency. Bulk packs of 16 to 48 tubes are common for active labs and educational institutions, while smaller packs support hobbyists or infrequent use. Consider whether tubes are needed for single-use or reusable applications.
Additional Features
- Round bottom test tubes facilitate even heat distribution during heating.
- Flat bottom tubes allow standing on flat surfaces without extra holders.
- Autoclavable glass test tubes support sterilization for biological work.
- Transparent glass enhances visual monitoring of reactions or samples.