Root cuttings in crystal-clear borosilicate glass tubes are ideal for hydroponic starts, hanging propagation stations, and stylish indoor displays.
Start new plants in style with these 25×150 mm borosilicate glass test tubes, perfect for propagating cuttings in water or nutrient solutions. Their clear walls let you watch roots develop while giving your propagation station a clean, modern look. Use them in wood or metal racks, hanging frames, or wall-mounted holders for a natural décor accent that’s as functional as it is beautiful. Durable, lab-grade glass resists cracking, clouding, and mineral buildup for re-use season after season.
25x150mm tubes have rounded bottoms & require support to stand upright
Completely unmarked for decorative use
25mm (~1"); 150mm (~6")
Tube capacity/volume is ~50 ml/1.75 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 (26)
What customers say in Google Reviews (click on names for full review):
Holly Christensen: ...very well packaged, quick delivery times, high quality test tubes...great service!
Dave Mertz: The large test tubes were perfect for a vase project I wanted to do. The price was right and the shipping was very fast...great service!"
Kerri Kairdolf: Perfect size ...great quality...arrived quickly with no damage.
Deshana Barua...glass tubes to display my propagations...prices are very reasonable (it’s impossible to buy just a single piece from online retailers like Amazon...more
Anna Hovius: ..pleased with...Indigo Instruments - very helpful, very courteous and polite..you handled my very small purchase - like it was a...more.
Lindsay McLennan: Great service! I forgot to order the corks with my tubes... they..shipped out that day...arrived...within 4 days! WOW! Great company to deal with...more
Cathy Waitinas BEST quality... prices...customer service for consistent high-quality lab glass for...Lab, classroom, workshop or crafting projects. Order... just a few or boxes of 50 to 100…more
2025-03-26
I needed some replacement test tube for a small plant rack and found the best price from this company. The tubes (3) came very well packaged and are lovely, no bubbles or flaws. AAA+ all around, do not hesitate to order if you need any of their products.
— Lark710
2023-01-25
Excellent product every time. Shipping is done with great care and always the best customer service. Thank you so much Indigo Instruments!
— Patricia
2022-06-30
Excellent service, fast shipping, EXCELLENT PRODUCT. I am completely satisfied.
— David
2022-01-22
I received my products in good condition and well packaged. My order came sooner than I expected. Thank you.
— Sherry
2021-10-18
Excellent product, packed really well and shipped quickly. Great customer service when you need it. Nice people make a great company, Indigo Instruments is a great company.
— Patricia
— Indigo:
Thanks for the kind words.
2021-08-31
Well packed and arrived quickly. There is some variation in the rim appearance but doesn't affect my decorative application. I like that they're completely unmarked!
— Alli
— Indigo:
Thanks for the feedback. Good to know that having unmarked tubes ensures your decorative ideas stand out. Our blog, Test Tube Sculptures: Lab Series “Sliced”, makes your point even clearer.
2021-08-04
The item I ordered was out of stock but they emailed us as soon as it was in. I really appreciated that. I ordered and a week later they arrived. Great customer service, great product I would highly recommend Indigo Instruments.
— Trish
— Indigo:
Glad we could help.
2021-07-13
Very good business to deal with. Allthough dimension varies some. In comparison to a previous order inside diameter is a little smaller and about 2mm shorter.
— Dar
— Indigo:
Thank you for review.
2021-04-12
Excellent product. Easy ordering. Ready on time for easy pick up. Great customer service. I highly recommend this company.
— Noel
— Indigo:
Much appreciated. Thanks.
2021-03-19
We needed test tubes for plant propagation stations so I was searching for a Canadian supplier. Came across Indigo Instruments and took the risk. Ordered 500 of them and shortly received an email saying they were backordered. They wondered if that was okay. I affirmed it was and settled back to wait. In less than a week we received a notice that our order was shipped. They arrived in short order and excellently packaged. Excellent customer service and we are fans! Definitely will order again!
— Jolene
— Indigo:
Thanks for letting us know and glad we could help. We're gratified by the appreciation from both our Canadian & American customers.
2021-03-09
Great product and lots of help through email to make sure I was getting what I required.
— Darrell
— Indigo:
Glad we could help.
2021-03-02
These test tubes are perfect for my craft projects. They have a nice large lip. I will buy again.
— Laurel
2021-02-18
Excellent service, super fast shipping. Will definitely be a repeat customer!!
— Trish
2020-11-09
Exactly as described. Great communication from customer service.
— Deidre
2020-10-16
Beautiful material, very helpful
— Sarai
2020-09-05
Just as described. Great customer service.
— Maggie
— Indigo: Thank you for kind words.
2020-09-03
Good quality test tubes and perfect size. Just as described. Packaging was done with care, and shipping was quick! Thank you!
— Ellen
2020-08-24
Superb quality! Much better than any other test tubes I have found. Thick and strong glass. The packaging was perfect and safe. Not one of the 100 tubes arrived damaged. So happy to have found a Canadian supplier that ships QUICK!
— Caterina
2020-06-27
Excellent product, excellent service always!
— Patricia
— Indigo: Thank you for kind review and continued business.
2019-08-30
We have ordered a bunch of these for craft projects. They always arrive quickly and are well packed to avoid damage by the shipper. As mentioned in description they can vary slightly in diameter but length is pretty much always accurate. The lip can also vary between orders. Overall very happy with Indigo Instruments and would definitely recommend.
— Wayne
2019-04-22
Great quality, very quick delivery, using for a test tube vase so I wish there was a bit of a wider lip on them.
— darcia
2019-02-04
Good price, quality seems decent. Packing was done well so I received no cracked/chipped/broken test tubes.
— David
2018-05-03
Really great quality test tubes for what I am using them for -- replacements in a test tube vase! Arrived promptly and everything was very well packed.
— Jeneen
2017-10-11
I was very satisfied with the quality of the test tubes for what I'm useing them for. Packing was very well done with no damage, blister wrapped carefully. Shipping was prompt. Will definitely order from Indigo again
— David Dickson
2017-08-08
Great quality, timely shipping
— susan
2017-05-16
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.
Thanks for the kind words.