9 best pyrex test tubes
Pyrex test tubes are a type of laboratory glassware commonly used in scientific research, chemical analysis, and various laboratory applications. Pyrex is a well-known brand associated with high-quality borosilicate glassware. Here's what you need to know about Pyrex test tubes:
Material: Pyrex test tubes are made from borosilicate glass, which is known for its exceptional resistance to heat and chemicals. This type of glass can withstand rapid temperature changes without cracking and is less prone to chemical corrosion than regular soda-lime glass.
Shapes and Sizes: Pyrex test tubes come in various shapes and sizes to accommodate different laboratory needs. The most common shape is cylindrical, but they can also be conical or have round bottoms. The sizes range from small test tubes used for mixing and storing small quantities of liquids to larger ones used for experiments and reactions.
Durability: Pyrex glassware is renowned for its durability and resistance to thermal shock. This means that Pyrex test tubes can be heated directly over an open flame or placed in a hot oven without breaking. They can also be rapidly cooled without risk of shattering.
Transparency: Pyrex test tubes are highly transparent, allowing researchers to easily observe the contents inside. This is crucial for monitoring reactions, observing color changes, and taking measurements.
Chemical Resistance: Borosilicate glass, used in Pyrex test tubes, is resistant to most chemicals, making it suitable for a wide range of laboratory applications. It can be used with acids, bases, and various organic solvents without degrading.
Versatility: Pyrex test tubes are versatile tools in the laboratory. They are used for a variety of tasks, including mixing, heating, and storing liquids, as well as conducting chemical reactions, culturing microorganisms, and performing qualitative and quantitative analysis.
Closures: Pyrex test tubes often come with a range of closure options, such as rubber stoppers or screw caps. These closures help seal the test tube to prevent contamination or evaporation of the contents.
Graduations: Many Pyrex test tubes have volume graduations marked on the side.These markings are useful for measuring liquids accurately and ensuring precise results.
Sterilization: Pyrex test tubes can be easily sterilized through autoclaving or other sterilization methods, making them suitable for microbiological and biological applications.
Safety: When used correctly, Pyrex test tubes are safe and reliable laboratory tools. However, users should be cautious when handling hot test tubes and wear appropriate personal protective equipment.
In summary, Pyrex test tubes are essential laboratory glassware made from durable borosilicate glass. They are highly resistant to heat and chemicals, transparent for easy observation, and come in various shapes and sizes to meet diverse laboratory needs. Pyrex test tubes are widely used in scientific research, chemical analysis, and industrial applications.
Below you can find our editor's choice of the best pyrex test tubes on the market
6 Pack - 20x150mm Pyrex Glass Test Tubes with Rim and Marking Spot
Lake Charles Manufacturing
Product description
These PYREX glass test tubes are made from special tubing to give the optimum wall thickness. They are well annealed, resistant to heat and chemically stable. These tubes have a white marking spot. Beaded rims are fire-polished.
- 6-inches Tall or 150mm
- 3/4 inch wide or 20mm
- Heat Tempered Pyrex Glass by Corning
- Includes rim and marking spot
- Volume: 36ml or 1.27 fluid ounces
User questions & answers
| Question: | How are you Can you tell me if these tubes are flat |
| Answer: | Hello, If you mean flat bottom, no they are rounded. We do offer flat bottom tubes on our website. Customer Service |
| Question: | 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 |
| Answer: | 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 |
| Question: | What is the white component on these |
| Answer: | The manufacturer call this a white marking spot and can be written on. They do not state what it is made of unfortunately. |
| Question: | What size cork would fit these |
| Answer: | Those size tubes would take a size #7 cork |
DEPEPE 25pcs 45ml Glass Test Tubes 25x140mm(0.98 x 5.51 inches) with Cork Stoppers for Science Lab, Party, Bath Salt and Candy Storage
DEPEPE
- Package includes: 25pcs 25x140 mm glass test tubes with cork stoppers.
- Size: The glass test tube is 140 mm (5.51 in) long, 25 mm (0.98 in) in diameter, and has a volume of 45 ml.
- Material: Glass test tube is made of borosilicate glass, heat resistant.
- Features: Cork is well sealed and can be used repeatedly after cleaning.
- Widely Uses: glass test tube can be used in scientific experiments, Halloween Christmas party decorations, to store bath salts, liquids and candy, to culture plants, etc.
User questions & answers
| Question: | Are these test tubes safe to store food like sugar |
| Answer: | Yes. I think they're food-grade quality, because glass is safe material. |
| Question: | how far above the 140mm tube does the cork protrude (in millimeters |
| Answer: | Not enough in my opinion. I made it work during a make and take that I was doing, but there were a couple that got stuck too far down to pull out |
| Question: | Did you receive package with test tubes broken |
| Answer: | No. They are all well packed, no breakage. |
| Question: | What's the inside diameter of the tube in mm |
| Answer: | The inside diameter of the test tube is approx. 21mm. And the diameter is the same throughout the entire length of the tube except the round bottom part. |
Corning Pyrex 70820-13 Borosilicate Glass Round Bottom 9mL Vista Reusable Rimless Culture Tube, 13mm OD x 100mm Length, Clear (Pack of 50)
Corning
Product description
PYREX VISTA 9mL Rimless Culture Tubes offer greater convenience in plugging and rack storage and have white marking spots. Ends are fire-polished. Tube Style: Culture. Top Style: Rimless. Bottom Style: Round. Surface Treatment: Untreated (Non-Sterile, No Cap). Material: Borosilicate Glass Code 7740. Capacity: 9mL (Approx). Length: 100mm (Approx). Outer Diameter: 13mm (Approx). Corning #: 70820-13.
- Corning disposable glass Pasteur pipet
- 9 x 0.22 inches (229 x 5.5mm)
- Soda lime glass
- Non-sterile - disposable; round tip
- Disposable Single Use
User questions & answers
| Question: | what are the measurements of this test tube |
| Answer: | They come in varying sizes by millimeter measurements. The 18mm X 150mm tube is just short of 3/4 inch diameter and about 6" long. You can use google to search mm to inch and that will bring up a metric converter so you can figure this out for yourself. It's easy. |
20x150mm Pyrex Glass Test Tubes with Rim, Rubber Stoppers, Wooden Rack, 6 Piece Set, Karter Scientific
Karter Scientific
Product description
These PYREX 34 mL test tubes are made from special tubing to give the optimum wall thickness. They are well annealed, resistant to heat and chemically stable. These 20x150mm tubes have a white marking spot. Beaded rims are fire-polished. Included in this set find: 20 x 150mm PYREX glass test tubes with beaded rim and Natural Wooden Rack with 6 drying pins and Rubber Stoppers to fit
- Test Tubes with Rim: PYREX# 9800-20
- Tube Details: 20x150mm, 34ml, Round Bottom
- Wood Rack with Drying Pins: Natural, 6 Holes, 10.75 x 3 x 4.25 inches,
- Heat Tempered Pyrex Glass by Corning
- Rubber Stoppers: Size #2, Solid, Black
Corning 70800-15 Pyrex Vista Beaded Rim Test Tube, OD (Pack of 50) (15mm x 125mm)
Corning
Product description
These Test tubes are well annealed, resistant to heat and chemically stable. Rims are fire-polished. The 25 mm OD tube does not have a marking spot.
DEPEPE 30pcs 13ml Small Clear Glass Test Tubes with Cork Stoppers, 15×100mm
DEPEPE
- 30pcs 13ml clear glass test tubes with cork stoppers.
- Size: 0.6"×3.9" / 15×100mm, volume: 13ml.
- Made of high quality borosilicate glass.
- Have a good seal.
- Great for storage of candy, sample, liquid etc.
User questions & answers
| Question: | Can I use this for mushroom mycelium storage..? Is this sterilizable |
| Answer: | Yes, this is sterilizable and can be used for mushroom mycelium storage. |
| Question: | i wanted the size close to middle finger and length is this the one |
| Answer: | The tube diameter is 0.6" and the length is 3.9". It is close to middle finger size. |
| Question: | Can they be heated |
| Answer: | Yes, they can be heated. They are made of high quality borosilicate glass. |
| Question: | its it 30 test tubes with 30 stoppers, or 30 pieces total with 15 TT / 15 stoppers |
| Answer: | Package contains 30 clear glass test tubes with 30 cork stoppers. |
Superlady 18pcs 20x150mm 36ml Glass Test Tube with Wooden Stopper for Scientific Experiments, Party, Decorate the House, Candy Storage
Superlady
- 5. 9-inches Tall or 150mm；0. 79 inch wide or 20mm
- Volume: 36ml or 1. 27 fluid ounces
- Re-usable grade glassware
- Borosilicate glass
- High Quality Cork
User questions & answers
| Question: | Does anyone know what size drill bit would fit this test tube size? I will drill holes in wood for the test tubes. Thanks |
| Answer: | The smallest drill bit |
| Question: | If I wanted to purchase labels for this product what size would I buy? First time purchasing & labeling sorry lol |
| Answer: | Very small. The tubes are 20mm in diameter (3/4 inch). So, the circumference of the tube is 2 1/2 inches. A 1 1/4 inch label will stretch exactly halfway around a tube. I’d get a little bit bigger label, and cut them to the size you want. In my classroom, that is the easiest way I have found to fit labels to odd sized materials. But, that’s just me. |
| Question: | Are the rims slightly flared |
| Answer: | No, the rims are not slightly flared. |
| Question: | Which tubes fit the rack |
| Answer: | All of them fit. |
DEPEPE 12pcs 80ml Glass Test Tubes 25×200mm with Cork Stoppers and 1 Brush
DEPEPE
User questions & answers
| Question: | Can hot liquid be put in these |
| Answer: | Absolutely. |
| Question: | Is the product well packed? Are the test tubes broken |
| Answer: | Yes. The product is well packed. 2 inch thick styrofoam tray with at least 1 inch between each tube. Ordered several sets. None of them were broken. |
| Question: | What is the size of the test tube |
| Answer: | It's 7.9 inches tall and 1 inch in diameter. Before purchasing, you should pay attention to the size of the test tube in order to avoid oversize. |
| Question: | Are these wide enough to hold Chessex dice sets (not D6s only |
| Answer: | Yes, that is actually why I bought them. LOL |
16x150mm Borosilicate Glass Test Tubes with Cork Stoppers, 23ml Vol, Karter Scientific 201B1 (Pack of 10)
Karter Scientific
Product description
16x150mm Borosilicate Glass Test Tubes with Cork Stoppers. Pre-assembled in packs of 10. Including 10 test tubes and 10 corks.
- Test Tubes: 16 x 150mm
- High Quality Cork
- Volume: 23ml
- Material: Borosilicate Glass
- Pre-Assembled packs of 10
User questions & answers
| Question: | How many inches tall are these |
| Answer: | about 4. 100mm is ~3.9 inches |
| Question: | What is the diameter of the cylinder? I am buying a rack where the holes are 22mm in diameter. Will they fit |
| Answer: | The external diameter of this tube is 13mm. It will be a very loose fit into a 22mm rack. |
| Question: | How long are these tubes |
| Answer: | how long and how wide in inches |
| Question: | how meny centemetres is 16x150mm |
| Answer: | A centimeter is 10 millimeters, so just move your decimal point to the left...16 x 150 mm is 1.6 x 15 cm |
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