Beta-Particle Source (Sr-90)

Product Code : EL-AS-11128

Last updated: 6 October 2026

Quick answer: A single sealed strontium-90 beta source embedded in colour-coded clear epoxy, marked with the element and isotope, with a half-life of 28.79 years. No activity level is published. Radioactive sources are regulated: confirm the authorisation you need, and obtain the source certificate, before purchase or import.

This is a sealed demonstration source for showing that different radiations have different penetrating power. Used alongside the cobalt-60 gamma source listed in this family, it lets a class observe directly that beta particles are stopped by shielding that gamma rays pass through, which is the core of any radiation-protection lesson.

What the listing publishes is the construction and the isotope. The source consists of one beta emitter embedded in a colour-coded clear epoxy material that seals the radioactivity inside, with the element and isotope marked on the disk. The published specifications are a half-life of 28.79 years and beta radiation.

The manufacturer describes the source as safe for classroom use. That description is recorded as a manufacturer statement and is not repeated here as a finding, because this listing publishes none of the information on which such an assessment rests. No activity level is given, in becquerels, microcuries or any other unit, and activity is the single figure that determines dose rate and therefore what handling, storage and distance are appropriate. Nor is there any sealed-source certificate, leak-test record, or statement of the standard the encapsulation is built to.

Radioactive material is regulated in India and in essentially every export market, including sources held for teaching. Before buying or importing this item, establish with your institution and the relevant national regulator what authorisation, registration or exemption applies to a source of this isotope and activity, and require from the supplier the activity, the manufacture and encapsulation details, the sealed-source certificate and the leak-test documentation. Confirm also what the disposal route will be at end of life, since a 28.79 year half-life means the source will outlast most teaching programmes and cannot simply be discarded.

Important: no activity level is published for this source anywhere on the listing, and activity determines dose rate. The description of the source as safe for classroom use is reproduced as a manufacturer statement only. Obtain the activity, the sealed-source certificate and leak-test documentation, and confirm the regulatory authorisation required in your jurisdiction, before purchase, import or use.

Technical specifications

The activity level is not published, and without it no dose assessment is possible. No sealed-source certificate, encapsulation standard or leak-test record is referenced. Radioactive sources are regulated for possession, use, import and disposal: confirm the authorisation required in your jurisdiction and obtain the full source documentation from the supplier before committing to a purchase. Ask Ambala Science Lab to confirm, in writing, the activity, the certificate, the shipping classification and the end-of-life disposal route.

Range and ordering

This item belongs to the Atomic Structure family within Biotechnology Equipment and Labware, part of the Biotechnology range. Packaged teaching kits are listed under Biotechnology Kits. Bulk, tender and OEM quantities are handled through lab tenders and OEM orders; use the contact page to request a quotation or any specification noted above.