- 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
- Capacity/volume: ~30mL/1.25 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 test tube racks or stoppers we don't supply.
They were exactly as described and shipped out right away. My son uses them for antkeeping and they were perfect for his needs.
We appreciate the clarity and uniformity of these test tubes. Indigo Instruments fills orders immediately and precisely; who could ask for anything more?
Test tubes were exactly as described. Appreciate the fact that they do not have any markings on them as they are used as vases.
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.
Test tubes were exactly as described. Appreciate the fact that they don't have any markings on them as they are used as vases.
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!