18x150mm (3/4x6") Test Tubes

SKU: 55907R

Starting from $0.90USD Each

Save More When You Buy More!
EACH $0.90 $0.90 /Unit
Box of 100 $40.50 $0.41 /Unit
Case of 800 $288.00 $0.36 /Unit

Unbeatable 18x150mm lab test tube prices, only $0.90 each but save 55% by the case. Holds 30mL (1.1 fl. oz), is rimmed/heat resistant for lab work but unmarked for decorative uses.

Looking for ideas on how to use test tubes? Check out these blogs: What is a Test Tube Used For? Not Just Labs! or Corked Glass Test Tubes for Chemistry Kitchenware.

This size is also available with these options:

 Two styles of test tube racks are listed in Related Products below.

Related information or images
  • Borosilicate (Pyrex™) glass: heat resistant/autoclavable
  • 18x150mm tubes have reinforced rims for stoppers
  • Completely unmarked for decorative use/custom imprinting optional
  • 18x150mm tube is a standard lab test tube; diameter variance +/- 0.5mm
  • Capacity/volume: ~30mL/1.1 fl oz.

Note: Test tube diameter is nominal; there can be a variance of as much as +/- 0.5mm. We cannot guarantee they will fit your test tube racks or stoppers.

Reviews (12)

The test tubes were exactly what I was looking for. I agree with Doug - they were packaged very well and no damage occurred during shipping. And they were shipped immediately and arrived in a very short time frame.

— Lori
— Indigo:

Good to hear, thanks for feedback.


Helpful staff, product was well packaged and everything arrived unbroken. Quick shipping too!

— Jon

Test tubes were very well packaged and arrived in perfect condition. I appreciate that they did not have any markings since they are to be used as vases.

— Doug
— Indigo:

Good to hear they got there ok & you're happy with their having no markings. We realized years ago that the esthetics demanded they be completely blank.


Good quality and still have not broken any with thermal shock

— BT
— Indigo:

That's good to hear & that not just labs need real borosilicate!

As described, quick service!
— Chuck

Exactly as I expected - shipped quickly - so reasonably priced.

— Hillary
— Indigo:

Thanks for the compliment.

They were exactly as described and shipped out right away. My son uses them for antkeeping and they were perfect for his needs.
— Teresa
We appreciate the clarity and uniformity of these test tubes. Indigo Instruments fills orders immediately and precisely; who could ask for anything more?
— Cat

Test tubes were exactly as described. Appreciate the fact that they do not have any markings on them as they are used as vases.

— Buster
— Indigo:

We've ordered without markings for years for that reason. Most sources only offer this in disposable soda lime glass culture tubes that break easily.

test tubes were exactly as described, they were shipped the next day with no breakage. Have purchased from Indigo n the past & will do so again in the future.
— Susan
Test tubes were exactly as described. Appreciate the fact that they don't have any markings on them as they are used as vases.
— Flowers
The durability of lab glass is essential to making quality horticulture display stands that last. Bulk pricing made the test tubes very affordable and the cost of the overall project minimal. Competitively priced and shipped promptly. I purchase all my lab glass from Indigo!
— Cathy
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