Duran laboratory bottle, clear, graduated, GL 45

Product information "DURAN ® Laboratory flask, clear, graduated, GL 45, without screw cap and pouring ring, 3500 ml, #218016908"

From freshly prepared buffer solutions and sterilised culture media to safely stored chemicals, the laboratory bottle is one of the most widely used containers in the laboratory. The Duran Original laboratory bottle has been the standard among laboratory bottles since its introduction in 1972. It is manufactured from high-purity, clear borosilicate glass 3.3, a Type I neutral glass in accordance with USP <660>, EP (3.2.1) and JP <7.01>, which is renowned for its high thermal stress resistance and excellent chemical resistance. Combined with its robust design in accordance with ISO 4796-1, this results in a particularly long service life.

Typical applications

Storage and handling of solutions, buffers, media and reagents
Preparation, mixing and transport of liquids
Autoclaving and sterilising media (version with cap)
Storage in the fridge or warehouse
Sampling and sample transport
Use in microbiology, cell culture, chemistry and quality assurance

Material and resistance

Borosilicate glass 3.3 is largely inert to water, acids, alkalis, saline solutions and organic substances, and exhibits low thermal expansion. This makes the bottle suitable for everyday use in laboratories and production, from the storage and preservation of media to their preparation, transport and sterilisation.

Cap and drip-free pouring

The standardised GL thread and the matching closure system ensure a particularly tight seal and clean, drip-free pouring. The screw-cap version is supplied with the familiar blue polypropylene cap and a drip-free pouring ring, which are suitable for use up to 140 °C. All components are fully autoclavable at 121 °C or 134 °C.

Markings and labelling

An easy-to-read, baked-on white scale allows the fill volume to be estimated, whilst a permanent labelling field enables the contents to be labelled. The baked-on, permanent print is particularly abrasion-resistant. The production batch can be traced via the permanent Retrace code on each bottle; the corresponding certificate is available for download at cert.dwk.com.

Standards and compliance

The bottles comply with the requirements of ISO 4796-1:2016 (Laboratory glassware, Bottles, Part 1: Narrow-neck bottles; does not apply to the 10-ml bottle). Borosilicate glass 3.3 is classified as Type I glass according to USP <660>, EP (3.2.1) and JP <7.01> and complies with ASTM E438, Type I, Class A.

Versions

Select the appropriate size (10 ml to 25 l) and version above:

With screw cap: includes a blue PP screw cap and a drip-free pouring ring.
Without closure: the glass bottle only, without cap or pouring ring, ideal if suitable closures are already available or other closure solutions are used.

Size overview

Volume	Thread	External Ø	Height (approx.)	Sales unit
10 ml	GL 25	33 mm	55-59 mm	10 bottles
25 ml	GL 25	36 mm	70-74 mm	10 bottles
50 ml	GL 32	46 mm	87-91 mm	10 bottles
100 ml	GL 45	56 mm	100-105 mm	10 bottles
150 ml	GL 45	62 mm	110-115 mm	10 bottles
250 ml	GL 45	70 mm	138-143 mm	10 bottles
500 ml	GL 45	86 mm	176-181 mm	10 bottles
750 ml	GL 45	95 mm	203-208 mm	10 bottles
1,000 ml	GL 45	101 mm	225-230 mm	10 bottles
2,000 ml	GL 45	136 mm	260-265 mm	10 bottles
3,500 ml	GL 45	160 mm	295-300 mm	1 bottle
5,000 ml	GL 45	182 mm	330-335 mm	1 bottle
10,000 ml	GL 45	227 mm	410-415 mm	1 bottle
15,000 ml	GL 45	268 mm	445-450 mm	1 bottle
20,000 ml	GL 45	288 mm	505-510 mm	1 bottle
25,000 ml	GL 45	316 mm	545 mm	1 bottle (with cap only)

Scope of delivery

‘With screw cap’ version: laboratory bottle including blue PP screw cap and non-drip pouring ring
‘Without cap’ version: glass bottle only (without cap or pouring ring)
Sales unit: 10 bottles (up to 2,000 ml) or 1 bottle (from 3,500 ml)

Individual requirements and procurement service

Do you require other Duran glassware, suitable replacement caps/pouring rings or larger quantities? We’d be happy to assist you with procurement and selection via our procurement service.

Closure:	Without cap
Volume:	3,500 ml