Sample cylinders should be serviced between operations and should be subject to a minimum of an annual inspection & pressure test plus a five yearly recertification.

The shipment of hydrocarbons in sample cylinders is also strictly controlled and requires equipment to have appropriate transportation certification in place.

Without the above being in place and completed correctly to original equipment manufacturer (OEM) requirements, the shipping certification is not valid, and depending on location, this may lead to breach of legislation and potential prosecution.

Proserv has over 40 years’ experience in certification and recertification requirements and our global knowledge and expertise allows us to advise clients on requirements to suit their needs.


Proserv cylinders transport hydrocarbon samples from the field to a laboratory of choice with the correct shipping certification for their destination countries.

Proserv are an approved sample cylinder manufacturer in accordance with the following certification authorities:

  • Pressure Equipment Directive (PED)
  • Transportable Pressure Equipment Directive (TPED)
  • Department of Transport USA (DOT)
  • Transport Canada (TC)
  • Australian Standards (AS)

Maintenance & re-certification

Proserv can arrange servicing programmes with cleaning, assembly and pressure testing of equipment at planned intervals and provide independent inspection and re-certification of Department of Transport USA, Transport Canada, TPED, PED & Australian Standards products to meet statutory requirements.

Equipment service schedules can be tracked via Proserv’s client equipment register, with service agreements available tailored to each client’s requirements.

As a United Kingdom Accreditation Service (UKAS) approved inspection body, Proserv can offer inspection under our ISO/IEC 17020:2012 Type C Inspection Body Approval.

Proserv can provide inspection of pressure receptacles for oil well sample cylinders including:

  • Seamless Steel Cylinders
    BS EN 1968:2002 + A1:2005 (except Annex B)
  • Welded Steel Cylinders
    BS EN 1803:2002 (except Annex B)
  • Titanium & S/S Cylinders
    (Proserv procedure TWI47)

The full details of Proserv accreditation schedule can be found on UKAS website, please reference Proserv approval number “4139”


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