LimsPulse
Petroleum testing

Copper Strip Corrosion Bath

A thermostatic bath that holds a polished copper strip immersed in a fuel or oil at a set temperature (for example 50 °C or 100 °C) for a set time. The tarnished strip is then compared with the ASTM colour standards to grade corrosiveness.

  • Petroleum refining
  • Fuel terminals
  • Lubricant blending
  • Aviation fuel quality
  • Independent testing laboratories
Illustration of Copper Strip Corrosion Bath
CALIBRATION

Copper corrosion bath calibration procedures

Bath temperature check

Checks that the copper strip corrosion bath holds the test temperature (for example 50 °C and 100 °C) within about ±1 °C at the positions used.

Open procedure
QUALIFICATION

Instrument qualification (DQ · IQ · OQ · PQ)

  1. 01

    DQ — Design qualification

    Defines methods (ASTM D130, ISO 2160, IS 1448 Part 15), temperatures needed (for example 50 °C and 100 °C), number of positions, pressure vessels and safety features.

  2. 02

    IQ — Installation qualification

    Confirms installation, bath filled, pressure vessels with certificates, colour standards and polishing kit supplied, documents recorded.

  3. 03

    OQ — Operational qualification

    Verifies bath temperature accuracy and stability at each test temperature and uniformity across positions; pressure vessels checked for leaks.

  4. 04

    PQ — Performance qualification

    Runs a known product (or an inter-laboratory sample) and confirms the expected class; operators' strip ratings compared for consistency.

In LimsPulse · Calibration Management

Keep every Copper corrosion bath in control: usage logs, calibration and maintenance schedules, and automatic blocking of overdue instruments.

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