1 Scope
This Part of BS 3970 specifies particular requirements for transportable, unjacketed electrically-heated steam sterilizers, fitted with a single manually-operated
door, and designed for the sterilization of unwrapped instruments and utensils for use
in clinics, in medical and dental surgeries and in non-medical applications. These
requirements apply in addition to the general requirements specified in BS 3970‑1.
The sterilizer, which has a mass not exceeding 75 kg, is specified to withstand a
design pressure not exceeding 2.65 bar2) and to operate fully automatically for one pre-determined cycle selected from within
the temperature range 115 °C to 138 °C (see Table 1).
NOTE 1 Sterilizers complying with this specification may not be suitable for operation in
zones of risk associated with the use of flammable materials.
NOTE 2 The titles of the publications referred to in this standard are listed on the inside
back cover.