Annealed test tubes offer excellent heat resistance and chemical stability. Reusable tubes have a round-bottom design and feature fire-polished rims. All tubes except the 55 and 70mL sizes have a blue enamel marking spot. Supplied without caps. Nonsterile.

• Non-sterile

Reusable tubes have a round-bottom design and feature fire-polished rims. All tubes except the 55 and 70 ml sizes have a blue enamel marking spot.