RSS5 – Alpha/Beta/Gamma Set

A complete five‑disc set that lets instructors and safety teams demonstrate alpha, beta and gamma behaviour and run quick instrument checks. Standard activities and an EU configuration are available, with optional secondary calibration for the gamma discs.

Key features

• All three radiation types in one kit: Po‑210 (α), Sr‑90 & Tl‑204 (β), Co‑60 & Cs‑137 (γ) for side‑by‑side demonstrations and QA checks. (See Technical specifications.)
• Two configurations to suit your program: Standard RSS5 and a lower‑activity EU option. Metric equivalents provided for Australian users.
• Clear tolerances & calibration: ±20% nominal; optional secondary calibration for gamma discs to ±5% with certificate (alpha/beta not available).
• Durable, easy‑to‑handle discs: sealed plastic format; 25 mm diameter is standard with larger discs available to order.
• Designed for education & QA: ideal for shielding, range, inverse‑square law and detector response exercises.

Technical specifications

• Included isotopes (five discs): Po‑210 (α); Sr‑90 (β); Tl‑204 (β); Co‑60 (γ); Cs‑137 (γ).
• Standard configuration (RSS5): Po‑210 0.1 µCi (≈ 3.7 kBq); Sr‑90 0.1 µCi (≈ 3.7 kBq); Tl‑204 1 µCi (≈ 37 kBq); Co‑60 1 µCi (≈ 37 kBq); Cs‑137 5 µCi (≈ 185 kBq).
• EU configuration (RSS5‑EU): Po‑210 0.1 µCi (≈ 3.7 kBq); Sr‑90 0.1 µCi (≈ 3.7 kBq); Tl‑204 0.25 µCi (≈ 9.25 kBq); Co‑60 1 µCi (≈ 37 kBq); Cs‑137 0.25 µCi (≈ 9.25 kBq).
• Activity tolerance: typically ±20% of labelled activity.
• Secondary calibration (optional): gamma discs only, to ±5% with certificate.
• Disc format & size: sealed plastic discs; 25 mm (1″) standard; 50 mm (2″) available. Thickness typically ~3.2 mm.
• Regulatory note (manufacturer): activities do not exceed the U.S. NRC Exempt Quantity limit.

Applications

• Teaching & training: demonstrate attenuation, range in air, and inverse‑square behaviour across α/β/γ.
• Radiation protection & QA: quick functional checks of GM and scintillation probes.
• Introductory nuclear labs: operating‑voltage studies and count statistics with contrasting emitters.

Compliance & Australian context

U.S. “Exempt Quantity” refers to the manufacturer’s supply classification. In Australia, licensing/approvals may be required depending on isotope and state/territory regulator. J3Seven can assist with documentation and local guidance.

What’s included

• Five sealed disc sources: Po‑210, Sr‑90, Tl‑204, Co‑60, Cs‑137 (chosen configuration)
• Manufacturer documentation; optional gamma secondary calibration certificate when selected

Options & related products

• Gamma disc secondary calibration: ±5% (NIST‑traceable) for tighter activity confirmation (alpha/beta not available).
• Related sets: RSS3 (three‑source α/β/γ) and RSS8 (gamma spectroscopy set); individual alpha and beta/gamma discs.

Maintenance & support

Store and handle in line with your radiation management plan. J3Seven provides selection advice, compliance documentation and after‑sales support. Australia‑wide delivery.

FAQs

What are the two configurations?
RSS5: Po‑210 0.1 µCi; Sr‑90 0.1 µCi; Tl‑204 1 µCi; Co‑60 1 µCi; Cs‑137 5 µCi. RSS5‑EU: Po‑210 0.1 µCi; Sr‑90 0.1 µCi; Tl‑204 0.25 µCi; Co‑60 1 µCi; Cs‑137 0.25 µCi. Metric equivalents above.

Do the discs come in Australian metric sizes?
Yes—25 mm discs are standard; 50 mm options are available on request.

Can I get calibration certificates?
Secondary calibration is available for the gamma discs (±5%); alpha and beta discs are not currently available for secondary calibration.

Do I need a licence in Australia?
Requirements vary by state/territory and isotope. J3Seven can assist with typical paperwork and provide supporting documentation.