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Screw top grinding jars 

 

Selecting the correct grinding jar for your application is essential to achieving the best possible result. Choose from a number of different sizes and materials to ensure the right fit for your application. Screw top grinding jars offer a further level of closure confidence and security. Although SmartSnapTM jars are often an excellent choice, some applications such as cryogenic grinding or work involving a glove box can be better served by screw top jars.


Glove box ready - Screw closure design ensures these jars remain closed when transferred in and out of a glove box.

✓ Cryogenic grinding - These jars are suitable for cryogenic grinding with liquid nitrogen

Jar Information
Available materials Available sizes Use for

Stainless steel

5, 10, 25, 35, 50  ml General milling - Stainless steel is a great choice for a wide range of applications. It has good wear resistance, impact force, and is affordable. Avoid use with corrosive material.
PTFE 25 & 35 ml Iron free milling of soft materials - If iron free milling is required but high impact force is not, PTFE is the right choice. It may be important to consider iron free milling if working with biological systems. PTFE has excellent chemical resistance to a wide range of organic solvents, acids, and bases.
Zirconia 10, 25, 35 ml Iron free milling of hard materials If both iron free mill and high impact force are required, zirconia is the best choice. Zirconia extremely hard and chemically inert. It is especially suited to catalytic and electronic applications.

Tungsten carbide

10 & 25 ml Extremely hard or abrasive materials - Tungsten carbide has a Mohs hardness of 9 and is and is used for processing the hardest materials such as ceramics.

 

Ball and Sample Loading Parameters
Grinding jar volume Sample loading* Grinding ball loading*
5 mm 7 mm 10 mm 12 mm 15 mm
5 ml 0.5 - 2 ml  1 - 3 1 - 2      
10 ml 1 - 4 ml 3 - 6 1 - 4 1    
25 ml 2.5 - 10 ml 10 - 15 5 - 10 2 - 3 1  
35 ml 3.5 - 14 ml 25 - 50 10 - 15 4 - 5 2 - 3 1
50 ml 5 - 20 ml 45 - 100 15 - 20 5 - 6 3 - 4 1 - 2

 

Vendors

At Form-Tech Scientific, we work hard to provide our customers with the best products available on the market. Our products focus primarily on particle comminution but we understand that the needs of our customers in processing their samples sometimes go beyond this. That is why we carry not only our own products, but those of companies that represent innovation and quality in other areas of the sample preparation/processing field.

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