Lab Grinding Jar 50ml - Natural Agate Stainless Steel Jacket Ceramic Parts
Compatible with Retsch PM Series for Industrial Ceramic Applications
Highly polished natural agate (SiO₂) grinding jars featuring excellent chemical stability, low contamination and high hardness. Agate jars provide outstanding resistance to acids, alkalis and organic solvents, making them ideal for high-purity sample preparation and precision grinding applications.
Optimal Grinding Configuration
To produce optimum grinding results, the jar size should be adapted to the sample amount to be processed. The grinding balls are ideally sized 3 times bigger than the largest sample piece. Following this rule of thumb, the number of grinding balls for each ball size and jar volume is indicated in the table below.
To pulverize, for example, 200 ml of a sample consisting of 7 mm particles, a 500 ml jar and grinding balls sized at least 20 mm or larger are recommended. According to the table, 25 grinding balls are required.
Typical Sample Materials
Zirconia planetary ball mills are perfectly suitable for size reduction and dispersing of various materials including:
- Alloys, bentonite, bones, carbon fibres
- Catalysts, cellulose, cement clinker, ceramics
- Charcoal, chemical products, clay minerals, coal
- Coke, compost, concrete, electronic scrap
- Fibres, glass, gypsum, hair, hydroxyapatite
- Iron ore, kaolin, limestone, metal oxides
- Minerals, ores, paints and lacquers, paper
- Pigments, plant materials, polymers, quartz
- Seeds, semi-precious stones, sewage sludge
- Slag, soils, tissue, tobacco, waste samples, wood
Application Fields
The grinding jars are widely applied in geology, mineral analysis, electronics, ceramics, chemical engineering, materials research, environmental protection and other laboratory applications.
Each jar set includes a grinding jar, jar lid, rubber sealing gasket and different sizes of agate grinding balls, ensuring efficient and reliable grinding performance.
Compatible Models
For Retsch grinding jars:
- 50ml, 80ml, 125ml zirconium oxide, agate, tungsten carbide grinding jars for Retsch planetary ball mill PM100, PM200, PM300, PM400
- 25ml, 35ml, 50ml zirconia oxide, tungsten carbide jars for Retsch Mix mill MM 500
- 50ml, 100ml, 250ml and 500ml zirconia oxide and tungsten carbide for Retsch vibratory disc ball mill RS200
For Fritsch grinding jars:
- 250ml and 500ml zirconia, alumina, agate grinding jar for Fritsch P5, P5/2, P5/4, P6
We have drawings for all the above models of equipment and maintain inventory of all ball mill jars.
Contact us for more information:
WhatsApp/WeChat: +86 19119299397
Standard Dimensions
(Offer OEM & ODM Service)
| Jar Volume |
OD (mm) |
ID (mm) |
Total Height (mm) |
| 25ml | 49 | 32 | 51 |
| 50ml | 55 | 38 | 67 |
| 100ml | 65 | 50 | 75 |
| 250ml | 92 | 74 | 88 |
| 500ml | 100 | 84 | 118 |
| 1000ml | 128 | 108 | 150 |
| 2.0L | 158 | 138 | 162 |
| 3.0L | 158 | 138 | 220 |
Note: Jar size tolerance ±0.1-0.2mm per batch. One set includes: jar + lid + rubber sealing gasket.
Choice of Grinding Jars & Grinding Balls
To prevent excessive abrasion, the hardness of the grinding jars and grinding balls must be higher than that of the material used. Normally, grinding jars and grinding balls of the same material should be chosen.
Material Compatibility Recommendations
| Categories of Materials |
Recommended Mill Jars |
| Soil and other materials not allowed with any impurity | Agate mill jar |
| Metal & nonmetal materials not allowed with any impurity | Zirconia mill jar |
| High hardness materials like diamond, tungsten carbide | Tungsten carbide mill jar |
| Strong acid & alkali materials or high temperature applications | PTFE mill jar |
| Iron ore materials with lower impurity sensitivity | 304 Stainless steel mill jar |
| Pigment or materials with later high-temperature processing | Nylon mill jar |
| Aluminum materials like ceramic glaze | Corundum mill jar |
| Electronic materials like lithium battery | Polyurethane mill jar |
| Easily oxidized materials requiring special atmosphere protection | Vacuum mill jar |
Mill Jar & Ball Compatibility Matrix
| Items |
Agate Balls |
Alumina Balls |
Stainless Steel Balls |
Zirconia Balls |
Tungsten Carbide Balls |
| Agate Mill Jar | 1 | | | | |
| Alumina/Corundum Mill Jar | 2 | 1 | | 2 | |
| Stainless Steel Mill Jar | | | 1 | | |
| Zirconia Mill Jar | | 2 | | 1 | |
| Nylon Mill Jar | 2 | | | 1 | |
| PTFE Mill Jar | 1 | | | 2 | |
| Polyurethane Mill Jar | 1 | | | 2 | |
| Tungsten Carbide Mill Jar | | | | 2 | 1 |
Key: 1 = Most suitable, 2 = Suitable
Features of Zirconium Oxide Grinding Jar
- High specific gravity, high efficiency
- Highly wear resistant to acid and solvents
- High cost-effective, low wear and long lifetime
- Highly polished, smooth, easy to clean, low abrasion to equipment
- High mechanical strength, good toughness, impact resistance, no broken beads
- Mainly used for lab planetary ball mill machines
Packaging & Shipping
Sample Room