Erlenmeyer Conical Flask 250ml
A flask is a glass vessel with a neck used in a laboratory to hold liquid substances. It can be divided into narrow neck and wide neck. However, it can be subdivided into round bottom flask, conical flask, flat bottom flask.
Description
250ml glass conical flask with narrow mouth
A flask is a glass vessel with a neck used in a laboratory to hold liquid substances. It can be divided into narrow neck and wide neck. However, it can be subdivided into round bottom flask, conical flask, flat bottom flask. Normally sizes of a glass conical flask with narrow mouth are 25ml to 5000ml. A conical flask, also known as an Erlenmeyer flask.
Jiangsu Guide Medlab produces many sizes of high borosilicate glass conical flasks based on the standards of ISO. Customized LOGO, colors, package, with and without stopper, frosted and smooth mouth are acceptable. The glass flasks with narrow mouth are packed in corrugated cartons in accordance with GB/T 6543; this kind of glass flask is made of 3.3 borosilicate glass in accordance with HG/T 3115 requirements.
Product Specification
Product name | 250ml glass conical flask with narrow mouth |
Body diameter | 85±2mm |
Neck diameter | 34±1.5mm |
Height | 140±3mm |
Thickness | 0.9mm |
Linear thermal expansion coefficient A (20 ℃~300 ℃) | ＜5.5x10-6K-1 |
Water resistance | Grade 1 |
Acid resistance | Grade 1 |
acid alkali-resistance | A2 grade |
●Surface Quality
It should not rotate or shake while putting on the plane. There should be no apparent bending of the flask of the neck.
Application
Glass conical flask can be used in chemistry. The glass flask is suitable for boiling liquids and especially appropriate for recrystallization. Glass conical flask can be also used in microbiology for the preparation of microbial cultures.
Quality Control
Packing, Storage and Transportation
●Package
250ml glass conical flasks are packed in a safe carton. The products shall be packed in corrugated cartons in accordance with GB/T 6543; The outer packing shall comply with the relevant provisions of GB/T 191；The outer packing shall show product name, specification and quantity, net weight, gross weight and volume and others.
●Storage
The glass conical flasks should be stored indoors after packaging, stacking height should not exceed 10 layers, should not be in contact with strong acid, strong alkali, chloride and other chemical substances.
●Transportation
The glass conical flasks can be transported by any means of transportation, loading and unloading should not throw.
FAQ
1. How many kinds of glass flask do we have?
We have glass conical flask, round flask, round flask with flat bottom, they are all can be with narrow neck and wide neck.
2. How can we guarantee the quality?
We can send sample for you before your big order and the production to confirm quality. We always have final inspection before shipment.
3. Can you provide custom service?
Sure. We can provide customized LOGO, package and others.
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