Please be aware that glassware is fragile and damage may occur during transit. If you receive a broken product, you can take the following steps: If the remaining items are sufficient for your use, please contact us for a refund. If a replacement is required, please contact to request one. Product Specifications Material: Type I, Class A 3.3 Borosilicate Glass Relevant Standard: ASTM E960 (Specification for Laboratory Glass Beakers) Autoclaving: This product can withstand repeated autoclave cycles at 121°C and 15 psi for 5-minute durations. Heating / Cooling: ◦ Suitable for heating via hot plate, open flame, oven, microwave, or heating mantles. ◦ Can be heated repeatedly to 230°C for normal use, and up to 490°C for a single use under extreme conditions. ◦ Can be cooled to a minimum of -230°C. ◦ Important: Do not plunge the product directly into a liquid coolant. For slow cooling, first place it in the vapor phase of liquefied gases before immersion. Vacuum / Pressure: This product is not designed or rated for vacuum or pressure applications. Usage Instructions & Precautions 1. Not recommended for precise measuring. 2. Ensure the outer wall of the beaker is free of water droplets before heating to avoid uneven thermal stress. 3. When heating liquids, do not exceed 2/3 of the beaker's capacity. A volume of 1/2 is generally recommended. 4. When stirring during dissolution or dilution, avoid touching the bottom or walls of the beaker with the glass rod. 5. When heating corrosive substances, a watch glass can be placed on the beaker's mouth to prevent splashing. 6. Beakers are common laboratory glassware, typically made from glass, plastic, or heat-resistant glass.
7-Piece Complete Starter Set: 10/25/50/100/250/500/1000ml beakers included, covering tiny samples to large solutions. Perfect for mixing, heating, measuring in lab, classroom, home workshop.
Lab-Grade Borosilicate Glass: Type I Class A material meets professional standards. Resists heat, chemicals, thermal shock—no cracking or degradation with daily use and repeated sterilization.
Easy-to-Read Scales: Permanent white graduations ensure clear visibility. Work efficiently for solution preparations.
Reliable Heat & Chemical Resistant: Withstands direct heating (hot plates, ovens) and resists acids/alkalis. Thermal shock resistance for long-lasting sturdiness.
Stable Flat Bottom & Versatile: Secure placement on benches/hot plates without tipping. Ideal for mixing, heating, dissolving, boiling—essential for professionals, students, hobbyists.