Is the glass reagent large or small?

Observation: Extremely high transparency, similar to a glass sampling bottle;

Process: Manufactured by injection molding, impact resistance: strong impact resistance;

Sealing: The bottle mouth and cap are well sealed, and it is difficult for the liquid to leak without a bottle stopper;

Application: It can meet the high-quality requirements of chemical solvents, chemicals, food, medicine, daily cosmetics, flavors and fragrances, etc.

It is generally used as a disposable sample vial, which is affordable and low-cost;

PE PP ordinary plastic large mouth small mouth bottle** size factory direct specifications size list.

Name of article. Specification (ml).

Material. PET reagent bottles.

Basic characteristics of PET products:

1.Pure new polypropylene material, the material is pure, and no recycled material is used.

2.No molding agent is added during the production process to prevent secondary pollution.

3.Withstand steam sterilization at 100 degrees for 30 minutes and repeat sterilization multiple times.

4.Wide mouth, large bottle mouth, easy access to reagents.

5.High transparency, reagents are clearly visible.

6.Selected materials, extruded without whitening.

7.Water-based reagent leak-proof test, good sealing performance.

8.The bottle is heavy and feels good in the hand.

9.There are many specifications, complete varieties, and there is a lot of room for choice.

10.Appropriate amount of solution, can be cryostored.

Notes:1Please choose products based on the characteristics of the packaged reagents or solutions, such as volatility, chemical compatibility, and permeability; Before mass use, users need to conduct effective tests to check whether the product is suitable for use.

2.Free replacement will be given to unused products with obvious appearance defects, and used products will not be exchanged.

3.In the production process of the product, the leak-proof performance sampling test method: inverted for 2 hours after filling water at room temperature and pressure, there is no leakage.

4.When autoclaving, the lid should be loosened if it has been closed, otherwise the bottle will be deformed due to air pressure changes.

There are large mouths and small mouths, generally small mouths for liquids, and large mouths for solids.

Generally, it is a small mouthful, because I am afraid that the glass reagent will be poured, or it is not easy to smell like an umbrella.

A glass container is a glass container used to store liquid reagents, which is convenient for pouring liquids and can avoid the volatilization of reagents, so the mouth is relatively small.

A jar is a glass container used to hold solid reagents.

There are various kinds of reagent bottles, which generally match the physical and chemical properties of the reagent.

Some are small, some are large, some are glass bottles, some are plastic, some are transparent, and some are brown.

All of these are related to the physical properties and chemical properties of the chemical reagent itself.

If it's a bitter and unpleasant lump, let's hurry up and dry it! Otherwise, it's even more uncomfortable.

If it tastes average or is easy to drink, it's casual, and it doesn't matter if it's stupid or stupid.

Both. It depends on what to pack.

Generally, glass grinding bottles are used, but glass grinding bottles cannot be used for alkali, because the alkali will react with frosting, and the stopper cannot be opened after a long time! , only rubber stoppers (and no cork) can be used

The main ingredient in glass is silica, which is an acidic oxide, which can react with alkali to form silicate, so that the glass bottle is corroded, so use a rubber stopper instead of a grinding glass bottle.

Theoretically, plastic must be used, but in practice, inorganic laboratories will not give too alkaline solutions, so glass stoppers are generally used

Generally, there are grinding and non-grinding ones, both of which are available, and different bottles are used for different things.

There are many glass bottle mouths.

There are also those with plastic cocks.

Choose C, the glass is silica, the acid of A can corrode, the strong alkali of B converts silica into potassium silicate, and D is the adhesive, which sticks the lid and the bottle body, and it cannot be pulled out.

Except for hydrofluoric acid, no other acid reacts with silica in glass.

A: Hydrofluoric acid directly corrodes the glass, B: Potassium hydroxide reacts with the silica of the grinding glass to form sodium silicate D: After absorbing carbon dioxide, the water glass (sodium silicate) will stick to the glass mouth, making the bottle unable to open.

The oil is liquid and can be poured out in small sips and also prevents contamination. Salt is solid and should be used in a jar, which is relatively easy to obtain.

Thin mouth bottle for oil, which can reduce waste, but also to reduce excessive oil sticking to the bottle mouth, salt bottle for wide mouth because of easy access.

It is a big mouth, a is generally a big mouth in closed syllable words, such as has, cat, fat, dad, mad, sad, etc.

This belongs to the small mouth. The words of the big mouth are like the encirclement, and the encirclement is the big mouth.

The words of the mouth are as big as the words, after all, they are one word.

As of the exam, take small bites.

1. Superior grade pure (GR, green label): the main component content is very high, the purity is very high, suitable for accurate analysis and research work, and some can be used as reference substances.

2. Analytical purity (AR, red label): the principal component content is very high, the purity is high, and the interference impurities are very low, which is suitable for industrial analysis and chemical experiments. It is equivalent to the ACS level (American Chemical Society standard) abroad

3. Chemically pure (CP, blue label): high content of principal components, high purity, and interference impurities, suitable for chemical experiments and synthesis preparation.

4. Experimental purity (LR, yellow label): the content of principal components is high, the purity is poor, and the content of impurities is not selected, which is only suitable for general chemical experiments and synthetic preparation.

5. Indicators and dyes (ID or SR, purple label): unique sensitivity is required.

6. Designated grade (ZD): according to the quality control index required by the user, the chemical reagent is customized for specific users.

7. Electronic purity (MOS): suitable for the production of electronic products, the content of electrical impurities is very low.

8. Equivalent reagents (3N, 4N, 5N): the main component content is above respectively.

9. Spectral purity: the purity of the main components is.