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Ball Penetration Apparatus
Ball Penetration Apparatus (Product Code: SLE/CE/31) is a Kelly ball workability tester used to measure how far a weighted, ball-bottomed cylinder sinks into fresh Portland cement concrete in civil engineering and concrete testing laboratories. Concrete technology classes and site laboratories use it as a simpler, much faster check than the slump test, because twice the Kelly ball reading approximately equals the slump. It is made by Jain Scientific Equipments Pvt Ltd (ScienceLab), an OEM manufacturer of engineering lab equipment in India, at its own factory in Ambala.
Specifications
| Parameter | Detail |
|---|---|
| Test purpose | Workability of fresh Portland cement concrete |
| Penetrating body | Cylinder with a ball-shaped bottom and a handle |
| Weight | 15 kg (cylinder and handle together) |
| Handle graduation | Graduated in mm |
| Reading resolution | Penetration recorded to the nearest 0.5 mm |
| Guide and reference | Strip frame that guides the handle and serves as the reference for measuring penetration depth |
| Relation to slump | Twice the Kelly ball reading approximately equals the slump |
| Product code | SLE/CE/31 |
| Manufacturer | Jain Scientific Equipments Pvt Ltd (ScienceLab) — OEM |
| Country of origin | India (made in Ambala, Haryana) |
What Is the Kelly Ball Apparatus Used For?
The Kelly ball test gives a quick measure of how easily fresh concrete will flow and compact. The strip frame is rested on a levelled surface of freshly placed concrete, the ball-bottomed cylinder is released so it sinks under its own weight, and the depth is read on the graduated handle against the frame. Because the reading is taken directly in the container or form, no cone has to be filled, rodded and lifted, which saves time when many batches must be checked.
In teaching laboratories the apparatus is often run side by side with a slump cone so students can see how the two workability results relate. For more reliable results, take readings at several points away from the container walls and average them, and wipe the ball clean between tests. It is a useful addition to lab equipment for technical institutes that teach concrete mix design.
OEM Manufacturer
Jain Scientific Equipments Private Limited, which trades as ScienceLab, is the OEM (original equipment manufacturer) of this Ball Penetration Apparatus. The apparatus is manufactured at the company's own licensed factory at Saha, Ambala, Haryana, and supplied factory-direct to engineering colleges, polytechnics, construction laboratories, dealers and importers, so buyers deal with the maker rather than a trader. For tender and vendor registration, the company's GSTIN is 06AAECJ8618A1ZT and its Legal Entity Identifier is 3358004HRD1JIVXKYX49. Read more on the ScienceLab company profile.
Related Civil Engineering Lab Equipment
These workability test sets are commonly used alongside the Kelly ball in a fresh-concrete practical:
- Slump Test Apparatus — the reference workability test the Kelly ball reading is compared with.
- Compaction Factor Test Apparatus — another workability method, useful for comparing results on the same batch.
- Vee Bee Consistometer — measures workability of stiffer mixes by vibration.
- K-Slump Tester — a probe-type workability tester for concrete placed in moulds and forms.
Browse the full range of Civil Engineering Lab Equipment.
Frequently Asked Questions
What does the Ball Penetration Apparatus measure?
The Ball Penetration Apparatus measures the workability of fresh Portland cement concrete. It records how deep a 15 kg ball-bottomed cylinder sinks into the concrete under its own weight, read on a millimetre-graduated handle against a strip frame that acts as the reference level.
How does a Kelly ball reading relate to the slump test?
With the Ball Penetration Apparatus, twice the Kelly ball reading approximately equals the slump of the same concrete. The test is considered simpler and much faster than the slump test, so it suits frequent checks, while a slump test can still be run when a direct slump value is required.
How precisely can penetration be read?
The handle of the Ball Penetration Apparatus is graduated in millimetres, and penetration can be recorded to the nearest 0.5 mm. The strip frame guides the handle so it stays upright and gives a fixed reference from which the depth is measured.
How heavy is the Kelly ball apparatus?
The cylinder with its ball-shaped bottom and handle weighs 15 kg in total. This known weight is what drives the ball into the concrete, so the Ball Penetration Apparatus should be lowered gently and released without pushing to keep readings comparable.
Who manufactures the Ball Penetration Apparatus?
The Ball Penetration Apparatus (SLE/CE/31) is manufactured by Jain Scientific Equipments Pvt Ltd, trading as ScienceLab, as the OEM at its own licensed factory in Saha, Ambala, Haryana, India. Quotations, repeat orders and spare-part requests are handled directly by the manufacturer.
Is a calibration certificate available for the Ball Penetration Apparatus?
Please discuss any calibration or inspection document you need for the Ball Penetration Apparatus with our team before ordering, so we can confirm what can be provided. Send your requirement through the contact page along with your enquiry.
What should I include in a quotation request?
For the Ball Penetration Apparatus, mention the quantity, your institution or company name, the delivery city or country, and any other concrete testing equipment needed for the same laboratory. ScienceLab supplies schools, colleges and dealers in India and international markets.
Request a Quote
To buy the Ball Penetration Apparatus, send your requirement through our contact page or add it to the enquiry cart. Quotations come direct from the manufacturer, with no trader in between.
Last updated: 24 September 2026
