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The Copper Strip Tarnish Test assesses the relative degree of corrosivity of petroleum products, including aviation fuels, automotive gasoline, natural gasoline, solvents, kerosene, diesel fuel, distillate fuel oil, lubricating oil and other products. A polished copper strip is immersed in 30mL of sample at elevated temperature. After the test period, the strip is examined for evidence of corrosion and a classification number from 1-4 is assigned based on a comparison with the ASTM Copper Strip Corrosion Standards. For aviation fuels and natural gasoline the sample tube is placed inside a stainless steel pressure vessel during testing.

Available models

Conforms to the specifications of
ASTM D4048, FTM 791-5309
Test Tube Bath Capacity
16 test jars
Maximum Temperature
190°C (374°F)
Temperature Control Stability
±1°C (±2°F)
Bath Medium
5 gal (18.9L) water or high temperature heat transfer fluid

Measures the tendency of lubricating grease to corrode copper under static conditions. A polished copper strip is immersed in a sample of grease at elevated temperature for a specified period. The strip is examined for corrosion and a classification number from 1-4 is assigned based on a comparison with the ASTM Copper Strip Corrosion Standards.

 

Constant temperature bath immerses 16 test jars for lubricating greasesl. Microprocessor temperature controller has °C/°F switchable digital setpoint and display. Operator and equipment are protected by an overtemperature control circuit which automatically interrupts power to the unit should bath temperature exceed a programmed cut-off point. Communications software (RS232, etc.), ramp-to-set and other enhanced features are available as extra cost options. Contact your Koehler representative for information. Welded stainless steel inner wall and powder coated steel outer wall construction with built-in support rack. Fully insulated.

Conforms to the specifications of
ASTM D130; IP 154 FSPT DT-28-65; ISO 2160; DIN 51759; FTM 791-5325; NF M 07-015
Testing Capacity
K25310/K25319: four (4) copper strip corrosion test pressure vessels K25320/K25329: eight (8) copper strip corrosion test pressure vessels or sixteen (16) test tubes with optional test rack
Maximum Temperature
221°F (105°C)
Temperature Control Stability
±1°F (± 0.5°C)
Heater Range
0-750W
Bath Medium
5 gal (18.9L) water
Temperature Control
Analog, Digital

Thermostatically controlled water bath immerses Copper Strip Corrosion Test pressure vessels at the required depth per ASTM specifications. Use for testing aviation gasoline, aviation turbine fuel and natural gasoline. Fully insulated, double-wall stainless steel construction. Soxhlet reflux condenser and constant water level device maintain proper working depth. Choice of four-pressure vessel and eight-pressure vessel models. Optional removable test tube rack converts four-pressure vessel model for testing of products not requiring corrosion pressure vessel. Copper Strip Corrosion Test Pressure Vessel For aviation fuels and natural gasoline Precision machined stainless steel pressure vessel inserts in copper corrosion bath for testing aviation fuels and natural gasoline. Withstands test pressure of 100psi (689kPa) per specifications. Threaded cap with O-ring gasket and knurled circumference tightens by hand to a positive seal. A 1⁄8" groove in the pressure vessel threads permits safe, gradual release of pressure when opening the pressure vessel.

Conforms to the specifications of
ASTM D130, D6074, D6158; FSPT DT-28-65; IP 154; ISO 2160; DIN 51759; FTM 791-5325; NF M 07-015
Capacity
17 test tubes
Maximum Temperature
190°C (374°F)
Temperature Control Stability
±1°C (±2°F)
Heater Range
0-750W
Bath Medium
5 gal (18.9L) water or high temperature heater transfer fluid

Constant temperature bath immerses 17 test tubes for copper strip tarnish tests of products not requiring a test pressure vessel, including: diesel fuel, fuel oil, automotive gasoline, Stoddard solvent, kerosene and lubricating oil. Microprocessor temperature controller has °C/°F switchable digital setpoint and display. Operator and equipment are protected by an overtemperature control circuit which automatically interrupts power to the unit should bath temperature exceed a programmed cut-off point. Communications software (RS232, etc.), ramp-to-set and other enhanced features are available as extra cost options. Contact your Koehler representative for information. Welded stainless steel inner wall and powder coated steel outer wall construction with built-in support rack. Fully insulated.

  • Chemical
  • Education & Academics
  • Environmental
  • Oil & Gas
Koehler Instrument CompanyProviding quality testing instrumentation and technical support services for research and testing laboratories has been our specialty since 1925. Meeting your testing needs is the primary focus of our business, which is why Koehler Instrument Company is a leading producer and supplier of petroleum, synfuels and petrochemical instrumentation worldwide. At Koehler, we pride ourselves in innovation. In a time of continuous technological advancement and transition we are constantly implementing new and improved ways to surpass the needs of an ever-evolving industry. Koehler products are backed by our staff of technically knowledgeable, trained specialists who are experienced in both petroleum products testing and instrument service, which is carried out either on site or at a Koehler service center.
[koehler instrument, ASTM compliance, petroleum products, petroleum testing, Corrosion tester, Copper Corrosion]