Bead beating can be performed in a variety of vessels, including tubes, vials and plates.
OPS Diagnostics' grinding vials are self-standing and have a re-enforced flat bottom to prevent cracking of the base during homogenization.
Considerations when selecting a grinding vessel
- Vial Composition: Polycarbonate (PC) is perferred over polypropylene (PP), and polyethylene (PE) as it is durable, clear and impact resistant.
- Sample Properities: Most temperature sensitive samples require cryogenic grinding.
- Sample volume/ amount: Over or under filling vessels can lead to inefficient homogenization and damage the vessel.
- Homogenizer: Not all homogenizers can take different vials sizes.
See the table below for general overview on the different vial options.
For a more in depth comparison please visit our, Selecting Grinding Vials for Sample Homogenization page.
|Disruption Tube||4 ml Grinding Vial||15 ml Grinding Vial||50 ml Grinding Vial|
|Dimensions (in)||0.4 x 1.7||0.5 x 2||1.125 x 1.667||1.125 x 3.5|
|Bottom||Skirted or conical||Flat||Flat re-enforced||Flat re-enforced|
|Working volume||0.5-0.8 ml||0.5-2 ml||2-8 ml||9-16 ml|
|Grinding Media||Vary||1 x 3/8" ball||2 x 7/16" balls||2 x 7/16" balls
2 x 9/16" balls
|Plant Tissue||up to 100 mg||100-200 mg||Up to 1 gm||1-3 gm|
|Seeds||-||≤ 500 mg (1 kernel)||≤ 4 gm (≈10 kernels)||4-8 gm (≈22 kernels)|
|Animal Tissue||Up to 100 mg||100-200 mg||Up to 2 gm||2-4 gm|