Thick enough where they can take some abuse and not break the first time you make a mistake. I waited a few weeks to post my review so that I could use them a few times and I am very pleased with the quality I received.
4 Oz. Amber Boston Round Glass Bottles With Black Dropper - Pack Of 24
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Valchoose LDPE Economy Wash Bottle, Narrow Mouth Squeeze Bottle Medical Lab Plastic, Safety Squeeze Bottle No Spill, Bend Mouth Watering Cans (500Ml / 16Oz / 1 Bottle)
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2-Pack 32Oz All-Purpose Heavy Duty Plastic Spray Bottles - Leak Proof, Adjustable Nozzle For Cleaning, Planting & Pet Care - Green
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ULAB Scientific 1000Ml Borosilicate Glass Beaker With Printed Graduation - Durable And Accurate For Lab Use (UBG1005)
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