13x100mm Plain Rimmed Glass Test Tubes

SKU: 55903R

Starting from $0.25USD Each

Save More When You Buy More!
EACH $0.25 $0.25 /Unit
Box of 100 $20.00 $0.20 /Unit
Case of 600 $112.00 $0.19 /Unit
[4.9]   9 Reviews    | Write a Review

Small glass test tubes, 13x100mm (1/2x4"), only $0.25 each.

  • buy a box of 100 & save. New Lower Prices for end of 2023!
  • plain, heat-resistant borosilicate glass ("Pyrex™") tubes
  • food and dishwasher safe
  • thick rimmed for safe stoppering
  • capacity is ~8mL/0.3fl oz.

This size is available in both rimless & rimmed:

Additional rubber stoppers and tube rack are listed in Related Products below.


These glass test tubes hold approximately 10mL. If you need to measure 10mL accurately or some part of that, a 10 mL graduated cylinder is what you need.

In Kits
  • Borosilicate glass: heat-resistant/autoclavable, food & dishwasher safe.
  • 13x100mm tubes have reinforced rims for stoppers
  • 13x100mm tubes have rounded bottoms & require support to stand upright
  • Completely unmarked for decorative use
  • 13mm (~1/2"); 100mm (~4")
  • Tube capacity/volume is ~8mL/0.3 fl. oz

  • Note: Test tube diameter and length is nominal; there can be a variance of as much as +/- 0.5mm. We cannot guarantee they will fit test tube racks or stoppers we don't supply.
Reviews (9)

Economical & sturdy. Excellent replacement for the more flimsy API aquaria test tubes. Easy to handle, no lip defects & take regular handling without breakage. Stored & used reliably with the test rack.

— M.
— Indigo:

Good to know they worked for you. Small, defect free tubes are hard to make & takes proactive monitoring to achieve.


I am well pleased with the test tubes I ordered. Test tubes were economical, packaged well and were shipped quickly. I would order from this company again.

— Larry
— Indigo:

Glad we could help.


As others have stated, delivery was very prompt and as expected. I would order from them again. Prices seem very reasonable. Unfortunately, not being familiar with mm sizing, the test tubes were a bit narrow for the wire flower holder I needed a replacement for, but I am still able to use it.

— Mary
— Indigo:

We should have listed American as well as metric units. The problem is that there is always some tube variance. So, if the specs state +/- 0.5mm, sometimes a batch has many that tend to +0.5mm while another may tend to -0.5mm.?

Some hardware or plumbing stores carry small o-rings/rubber washers that you can slip under the rim to fix this. Or, see if you can get very small rubber bands.


Very fast processing and shipping. Products were exactly what I expected and work great for their purpose.
— Kimberly
I was extremely happy with the product I received and the prompt service and delivery, which is especially exceptional in these times of uncertainity and delays. Customer Service is also to be commeneded for their prompt and courteous responses. From the moment the order was placed, their commitment to delivering quality product in a timely manner was evident.
— Christine
— Indigo: Thank you for kind words Christine.

Indigo consistently provides high quality products, speedy order fulfillment, and welcoming customer service. Thank you.

— Bea
I’ve ordered twice from Indigo and have been very satisfied with their service and product. Shipping is incredibly efficient and the products are high quality.
— Lm
I was very satisfied with the quality of the test tubes for what I'm using them. Packing was very well done with no damage, blister wrapped carefully. Shipping was prompt. Will definitely order from Indigo again.
— David Dickson
These test tubes are consistent in size and the both the price and customer service are great. I have ordered thousands of test tubes from Indigo for my arts and crafts business in Austin and am a very happy customer.
— Brian D. J.
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