DURAN brown laboratory bottle 25 ml GL25 without screw cap, pack of 10

DURAN® Original GL 25 laboratory bottle, brown, without screw cap and pouring ring, 25 ml DURAN® Original GL laboratory bottles have been the gold standard for multifunctional laboratory bottles since their introduction in 1972. The bottles are formed from high-purity, clear USP/EP Type I borosilicate glass 3.3, known for its excellent thermal performance and high resistance to chemical influences. A combination of high-performance materials and a robust ISO 4796-1 design ensures a long service life. The use of a fused, external brown colour protects light-sensitive materials from the effects of photodegradation. Protection against ultraviolet light complies with the international USP/EP standards and is maintained throughout the entire service life of the bottle. The brown-coloured bottles feature an easy-to-read graduated volume scale and a permanently white enamel labelling area. The permanently printed batch identification (“Retrace Code”) on each bottle guarantees complete traceability of production. DURAN® Original laboratory bottles in brown are supplied with or without the well-known blue polypropylene closure and drip-free pouring ring for use up to 140 °C. All components are fully autoclavable at 121 or 134 °C. Special features and benefits: Standardised GL thread and matching closure systems for particularly tight sealing and easy, clean pouring UV protection up to approx. 500 nm wavelength through external colour application The purely external brown colouring ensures unchanged DURAN® properties inside the bottle Long service life and good chemical resistance of the brown colouring Easy-to-read scale with graduation marks for measuring the contents Baked-in and therefore permanently durable white printed image The 10 and 25 ml sizes have a specially shaped glass rim for better pouring, eliminating the need for an additional plastic pouring ring Application: Preparation of light-sensitive materials, storage of light-sensitive materials, transport and shipping of light-sensitive materials, autoclaving of media and reagents, culture vessel