High-quality test tubes designed and constructed for optimal performance.

• Fire-polished top
• No rim
• Durable white ceramic enamel marking spot

Made from ASTM 438 Type 1 Class A borosilicate 33 expansion glass and as per ASTM specification E982 Type 4.

These tubes come without rim and have fire-polished top. It features a durable white ceramic enamel marking spot.

Allows use at temprature up to 500 °C and have excellent resistance to chemcial attack.