Comprehensive guide for brown sample bottles with screw mouth

1、 Definition and purpose

Basic Definition

　　Brown sample bottle with screw mouthIt is a glass container used for storing and transporting liquid samples, made of brown glass material (light resistance>90%), with a threaded mouth design (such as GL45 standard) to ensure sealing.

Core function: Block ultraviolet rays through brown glass to protect photosensitive samples (such as organic solvents and biological samples) from photolysis or degradation.

Typical application scenarios

Chemical analysis: Sample storage before HPLC/GC chromatography injection.

Life Sciences: Light shielded storage of biological reagents such as nucleic acids and proteins.

Environmental monitoring: Sampling containers for water quality and organic matter in soil.

　　

2、 Specifications and materials

Material characteristics

Material type, temperature resistance range, chemical compatibility, applicable scenarios

High borosilicate glass -80 ℃~140 ℃ acid and alkali resistant, capable of high-pressure sterilization, long-term storage, and high-temperature experiments

Polypropylene (PP) threaded cap -20 ℃~121 ℃ resistant to organic solvents, lightweight for short-term transportation, suitable for routine laboratory use

Common specifications

Capacity: 2ml (chromatographic injection), 10ml/20ml (conventional packaging), 40ml/60ml (large volume storage).

Thread standard: GL45 (universal type), 9mm (Agilent specific).

Supporting components: optional PTFE/silicone gasket (single/multiple injection), aluminum cover or plastic cover.

3、 Product recommendation

Domestic brand

Bunsen: Economical PP cap brown bottle, suitable for teaching laboratories.

Purchase suggestions

Priority sorting:

Light sensitivity experiment → Select high borosilicate glass+aluminum foil film for sealing

Conventional storage → PP cap brown bottle (lower cost)

Automated process → Agilent and other standard thread bottles

4、 Precautions for use

Sealing maintenance

Regularly check whether the gasket is aging (it is recommended to replace it every 3 months).

Special equipment (170-190 ℃) is required for heat sealing film, and self-adhesive film should avoid repeated exposure.

Cleaning and sterilization

Glass bottle: It can be soaked in dilute nitric acid to avoid strong alkaline cleaning agents.

PP cover: High pressure sterilization at 121 ℃ for no more than 30 minutes.

Storage conditions

Avoid light, dry environment, and temperature (glass bottles are prone to breakage due to sudden cooling and heating).

Note: The above information is for reference only and is not intended as experimental evidence. If you need specific product instructions, please consult a technical teacher or brand supplier.

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